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Abstract BackgroundIn an aging population, it is important to activate older adults in taking care of their own health. Increasing physical activity is one way to avoid or lessen age-related physical and mental impairments. Interest in the use of information and communication technology (ICT) tools to promote physical activity among older adults is growing considerably. Such tools are suitable for communicating activation factors—skills, knowledge, and motivation—by integrating a variety of behavior change techniques (BCTs) to enhance physical activity. Although activation factors have been incorporated into physical activity interventions using ICT, little is known about the actual integration methods used in such interventions or about the effects of activation factors on influencing behavior change. ObjectiveThe first aim of this study was to identify which of the activation factors were covered in physical activity–promoting ICT interventions for older adults and which BCTs were used to address them. The second objective was to classify the user interaction interfaces and delivery modes that were used to promote these activation factors. MethodsThe search engines of PubMed, Web of Science, and ScienceDirect were used to search for and identify articles examining the effectiveness of ICT interventions for promoting physical activity in older adults. References and related data were selected, extracted, and reviewed independently by 2 reviewers. The risk of bias was assessed, and any conflict was addressed by a third separate reviewer. Selected articles included older adults aged ≥55 years without pre-existing medical diseases and other physical or mental conditions that could hinder movement. ResultsIn total, 368 records were retrieved, and 13 studies met all inclusion criteria. Articles differed in terms of themes, timescales, user interaction interfaces, and outcome measures; therefore, a quantitative data synthesis was not feasible. Motivation was the most promoted activation factor among all trials (33 times). An app and a smartwatch were used in the majority of intervention groups (7/20, 35%) for tracking physical activity and receiving personalized feedback based on the individual goals. Skills (25 times) and knowledge (17 times) were the next most commonly addressed activation factors. Face-to-face interaction was the most used approach to targeting users’ skills, including providing instructions on how to perform a behavior and exchanging knowledge via education on the health consequences of insufficient physical activity. Overall, integrating all 3 activation factors and using multiple user interaction interfaces with a variety of delivery modes proved the most effective in improving physical activity. ConclusionsThis study highlights commonly used BCTs and preferred modes of their delivery. So far, only a limited number of available BCTs (21/102, 21%) have been integrated. Considering their effectiveness, a larger variety of BCTs that address skills, knowledge, and motivation should be exploited in future ICT interventions.

Background: Misinformation about abortion is widespread and was exacerbated by the overturn of Roe v Wade . Young adults are among those facing the most direct impacts of new abortion restrictions and are more likely to access health information from online sources, where misinformation is prevalent. We explored how young adults perceive and evaluate abortion-related information in a time of heightened abortion restrictions., Methods: We conducted in-depth, semi-structured interviews with 25 young adults (aged 18-24 years, 56% assigned female at birth), recruited across 17 US states (44% living in states with restrictive abortion policies), between June and September 2022. We derived themes from the interviews using reflexive thematic analysis., Results: While many participants were aware of and had personally encountered abortion misinformation, their susceptibility to false claims varied substantially based on their previous knowledge of abortion and exposure to anti-abortion rhetoric. Participants tended to reject some common myths regarding the medical risks of abortion (eg, association with breast cancer), while expressing a wider range of views regarding its impacts on fertility and mental health. When presented with contradictory sources of abortion information, most participants were unable to confidently reject the misleading source. Knowledge gaps left participants vulnerable to misinformation, while prior scepticism of anti-abortion rhetoric protected participants against misinformation., Conclusions: In this diverse national sample, young adults demonstrated a range of perceptions of abortion misinformation and approaches to identify it. These results lay the groundwork for future observational and experimental research in public health communication., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. No commercial re-use. See rights and permissions. Published by BMJ.)

Objectives: Complications following breast cancer treatment result in chronic upper limb disabilities. To plan an informed and effective rehabilitation for timely intervention to prevent, mitigate, or manage the functional impairments for breast cancer survivors, especially in settings with limited resources, the burden of upper limb disabilities needs to be ascertained. This study examined upper limb disabilities and associated factors among breast cancer survivors., Methods: This cross-sectional quantitative study recruited 60 breast cancer survivors using purposive sampling method. Text messages and face-to-face interactions were used to inform participants about the study. Disability of the Arm, Shoulder and Hand questionnaire was used to ascertain the upper limb disabilities. To determine lymphedema, tape measurements of upper limb circumference were translated into a limb volume with the geometric formula for a truncated cone. Visual analogue scale, hand dynamometer, and goniometer were used to measure pain, grip strength, and shoulder range of movement, respectively. Descriptive statistics were used to summarize data. Linear regression was used to determine the correlation between upper limb disabilities and selected variable. Alpha level was set at p  < 0.05., Result: The prevalence of upper limb disabilities was 73%. Pain, lymphedema, shoulder range of movement, and grip strength showed strong correlation with upper limb disabilities. Pain and lymphedema increased by around 0.095 and 0.061 units, respectively, for every unit increase in disability. Conversely, there was a decrease of 1.394, 0.770, 0.285, and 0.045 in shoulder flexion, shoulder abduction, grip strength, and body mass index, respectively, for every unit increase in disability., Conclusion: Upper limb disabilities had high prevalence and significantly correlated with every variable that was examined. The high prevalence of upper limb disabilities and their interaction with related variables calls to action for routine screening and prompt intervention to identify, prevent, or manage upper limb functional impairments in breast cancer survivors., Competing Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article., (© The Author(s) 2024.)

Misinformation about reproductive health threatens to harm health outcomes, compromise medical trust, and enable misinformed policy restrictions. In recent years, reproductive health misinformation has proliferated online due to ideological campaigns and limited content moderation for reproductive health topics. Developing evidence-based practices to counter reproductive health misinformation requires an understanding of the content that women are exposed to online, which is currently lacking. This review sought to identify common claims and narratives about reproductive health on social media and the internet that could easily mislead. We performed a narrative review of articles about online reproductive health misinformation, from which we extracted misleading claims and narratives. We conducted a qualitative content analysis to describe the ways in which the claims and narratives could be misleading. We found that potentially misleading claims and narratives about reproductive topics relating to contraception and abortion, fertility, chronic disease, breast cancer, maternal health, and vaccines abound across social media platforms and websites, with 112 identified in total. One-third of this content could mislead by claiming that evidence-based interventions were associated with unattributed risks. Twenty-three percent made medical recommendations that do not align with professional guidelines. Fourteen percent promoted alternative medicine. Smaller numbers of claims and narratives exaggerated risks of medical interventions, discouraged evidence-based interventions, directly undermined medical trust, and proposed inaccurate biological mechanisms. Healthcare professionals can proactively promote evidence-based medical decision-making by increasing their awareness of prominent misleading claims and narratives., (© 2024. The Author(s).)

Introduction: Knee osteoarthritis (KOA) is a progressive condition that results in decreased mobility, self-imposed restriction of activity, and impaired functions such as loss of self-efficacy, fear of falling, and balance impairments. This study assessed balance confidence and associated factors among patients with KOA., Methods: This cross-sectional study involved 115 patients with KOA. The Western Ontario and McMaster University Osteoarthritis Index was used to evaluate pain, stiffness, and physical function while the Activity Specific Balance Confidence scale was used to assess the balance confidence. Pearson's chi-square test, Pearson's correlation and Spearman's rank correlation coefficient determined the association between variables., Results: Greater number [67(58.3%)] of the participants had low levels of functioning in balance confidence. Significant associations were observed between balance confidence and pattern of KOA (X2 = 7.08, p = 0.029, φc = 0.248), fear of fall (X2 = 38.32, p = 0.001, φc = 0.577) and history of fall (X2 = 11.49, p = 0.003, φc = 0.316). Significant negative correlations were observed between balance confidence and pain (r = -0.498, p = 0.001), stiffness (r = -0.564, p = 0.01) and physical function (r = -0.676, p = 0.001)., Conclusion: The low levels of balance confidence and related factors are a cause for concern and highlight the need to assess and monitor balance confidence in KOA rehabilitation using balance confidence ratings. This could prompt the integration of physical therapy rehabilitation programs that target balance confidence and related factors to improve mobility, quality of life and outcome of rehabilitation., Competing Interests: Declaration of competing interest All authors declare that they have no conflict of interest., (Copyright © 2024 Elsevier Ltd. All rights reserved.)

Purpose: Although fertility preservation for patients with childhood and adolescent cancer is considered standard of care in the high-resource settings, it is rarely offered in low-resource settings. This study explores the experiences and perspectives of oncology health care professionals in Uganda to identify contextual barriers and facilitators to addressing oncofertility in low-resource settings. Methods: Using ground theory, we conducted in-depth face-to-face interviews of health care professionals managing pediatric patients at the Uganda Cancer Institute (UCI). Using a systematic, semi-structured interview guide, participants were asked open-ended questions about their understanding of fertility preservation and their perspectives on implementing this care at their institution. Although all the eligible health care providers were interviewed, interview transcripts were uploaded into NVivo version 12 and openly coded as per theoretical requirements. Codes were refined into categories and later into structured themes. Results: Twelve health care professionals were interviewed. Most participants identified as female ( n = 9). Their role in the medical team varied from nurses ( n = 6), medical officers ( n = 3), pediatric oncologists ( n = 2), and pediatric oncology fellow ( n = 1). Six themes were noted as follows: (1) importance of information, (2) importance of future fertility, (3) inadequate consideration to future fertility, (4) communication barriers, (5) inadequate knowledge, and (6) resource barriers. Conclusion: Although health care providers at the UCI face contextual barriers to addressing future fertility among patients with pediatric cancer, they value preserving fertility in this population. Future initiatives that aim to introduce oncofertility care in low-resource settings should prioritize educating providers and building capacity to meet the oncofertility needs in this setting.

Context: Women, transgender men, and gender non-binary individuals facing unwanted pregnancy use online resources for abortion information. We sought to determine the informational and emotional needs that those seeking abortion information on Reddit expressed immediately following the Dobbs v. Jackson Women's Health Organization (Dobbs) decision in the United States. Furthermore, we aimed to understand how the Reddit community addressed these needs., Methods: We collected posts on Reddit in the subreddit r/abortion that expressed informational or emotional needs related to the Dobbs decision created between June 24, 2022 and July 24, 2022. We identified posts using keywords including "roe," "rvw," and "trigger law" and then manually reviewed them to ensure relevance. We analyzed posts and their comments using qualitative descriptive analysis., Results: One hundred and ten posts met inclusion criteria. Original posters expressed needs for legal and medical information. Posters also expressed need for logistical support, including help accessing medication abortion, traveling out of state, and financing abortion care, and emotional support in general and resulting from fear of parental disapproval and shame relating to abortion stigma. Although responders to these comments addressed these needs by offering general support, accurate information, and reliable resources, intersecting and emotional needs sometimes went unaddressed., Conclusion: The Dobbs decision caused confusion and panic among abortion seekers requesting guidance on r/abortion, resulting in informational and emotional needs. While the r/abortion community actively addressed needs, inherent limitations of an online forum prevented some original posters from receiving the multifaceted support they needed., (© 2024 University of Ottawa.)

Purpose: This study determined the association between kinesiophobia and age, body mass index, highest educational status, self-efficacy, pain intensity, and disability in chronic non-specific low back pain (CNSLBP) patients. Predictors of kinesiophobia were also assessed., Methods: This cross-sectional design utilised 224 CNSLBP patients in tertiary hospitals in Nigeria. The Tampa Scale of Kinesiophobia, Oswestry Disability Index, Pain Self-Efficacy Questionnaire, and Numerical Pain Rating Scale were used to assess kinesiophobia, disability, self-efficacy, and pain intensity respectively. Spearman's correlation and multiple regression analysis determined the association between the variables of interest and the predictors of kinesiophobia, respectively., Results: Most of the participants reported a high level of kinesiophobia (92%), low level of self-efficacy (68.8%), moderate pain intensity (58.0%), and moderate disability (57.1%). A significant positive weak correlation was observed between kinesiophobia and pain intensity ( r  = 0.138, p  = 0.040). Gender, self-efficacy, pain intensity, and disability significantly predicted the extent of kinesiophobia ( p  < 0.05)., Conclusion: The increased levels of kinesiophobia are a cause for concern and highlight the need for kinesiophobia and related factors to be closely monitored and incorporated into preventive and curative rehabilitation programmes for CNSLBP patients to minimise the negative impact on rehabilitation outcomes.Implications for RehabilitationPatients with chronic non-specific low back pain (CNSLBP) have high levels of kinesiophobia, which could predispose them to avoidance behaviours, physical inactivity, and deterioration of health, all of which, if not addressed, may result in poor rehabilitation outcomes, setting off a viscious cycle.Regular kinesiophobia assessments could indicate areas of rehabilitation concern, allowing health care providers to better target rehabilitation programs and improve rehabilitation outcomes.Pain severity, self-efficacy, and disability should be frequently assessed and included when planning rehabilitation programs, to reduce the detrimental impact on kinesiophobia.In patients with CNSLBP, graded exposure therapy to movement is necessary to prevent and reduce kinesiophobia, thereby increasing compliance during rehabilitation programs.

Introduction: Shared decision making (SDM) is widely affirmed as an ethical principle in healthcare; underpinned by both evidence of its positive outcomes among patients and strong inducements for its adoption by health professionals. This study investigated patients' involvement in SDM, determined its association with their personal characteristics and identified factors influencing their participation., Method: A cross-sectional survey was executed among 148 consenting patients, who were recruited using convenience sampling technique and invited to complete self-report questionnaires on SDM. Data were analyzed via descriptive and inferential statistics., Results: Only 14 patients (9.5%) were involved in SDM whilst most patients (88.5%) had passive roles during consultation. SDM involvement had significant associations with age (p = .006) and educational status (p = .021). Most patients (67.6%) identified 'Doubt towards SDM,' as a factor that could hinder this collaborative process. Similarly, majority of the patients acknowledged the relevance of the influential factors: 'Physiotherapist's support' (83.7%) and 'Adequate health Information' (75%), toward promoting involvement in SDM., Conclusion: Patient involvement in SDM was low in this study. Older and less/uneducated patients exhibited an increased tendency of noninvolvement. Key influential factors that either facilitate or hinder patients' involvement in SDM were revealed. There is a need to curtail drawbacks to SDM and promote its execution in physical therapy as well as general clinical practice.

To review the effects of Otago exercise program (performed individually or in group) on several physical and psychosocial outcomes for community-dwelling and institutionalized older adults. Fourteen articles met the inclusion criteria. Three electronic databases and reference lists of identified studies were searched. Eligibility criteria included clinical trials of the Otago exercise program conducted among older adults. Two studies were conducted in institutions, 2 in groups. None of the studies reviewed reported the post-intervention result of the Otago exercise program on depression or any other psychological construct. Otago exercise program was effective in reducing falls, improving balance, strength, mobility, and health-related quality of life within the community and in institutions. Available evidence suggests group performance may be better than individual programs. The Otago exercise program is an important and effective exercise strategy which can be administered in groups or individualized to both community-dwelling and institution-resident older adults. Future reviews, especially, systematic reviews with meta-analysis should be performed.

Background: Late-life experiences such as protracted and indisposing medical disorders can negatively impact older adults' psychological and mental health, making them vulnerable to depression. Majority of the assessment tools for depression were developed for use in western countries. There is therefore the need for availability of culture- and environment-specific tools for assessment of depression in low-and-middle-income countries. This study was designed to cross-culturally adapt and validate the Geriatric Depression Scale-15 (GDS-15) into Igbo language and culture., Methods: The English version of the GDS-15 was translated into Igbo language; synthesized, back-translated, and underwent expert panel review, pretesting and cognitive debriefing interview, according to the American Academy of Orthopedic Surgeons' guidelines. The Igbo version of the GDS-15 was tested for concurrent and structural validities, and internal consistency among consecutively recruited 140 consenting older adults (62.9% females) in Enugu North Senatorial District at 0.05 level of significance., Results: The English version of the GDS-15 was successfully cross-culturally adapted to Igbo with all the 15 items still retained on the Igbo version of the GDS-15. The Igbo version of the GDS-15 exhibited the same structure as the English version, and displayed a Cronbach's alpha value of 0.53 with no significant ceiling (0%) and floor (0%) effects. The correlation between the participants' total scores on the Igbo and the English versions of the GDS-15 (ρ = 0.86) was adequate. There was no significant difference between corresponding scores in the English and Igbo versions of the GDS-15 (p = 0.89)., Conclusions: The Igbo version of the GDS-15 is a valid and culturally specific instrument, and can be used for assessing depression among Igbo older adults in Nigeria., (© 2022. The Author(s).)

Rare diseases affect between 25 and 30 million people in the United States, and understanding their epidemiology is critical to focusing research efforts. However, little is known about the prevalence of many rare diseases. Given a lack of automated tools, current methods to identify and collect epidemiological data are managed through manual curation. To accelerate this process systematically, we developed a novel predictive model to programmatically identify epidemiologic studies on rare diseases from PubMed. A long short-term memory recurrent neural network was developed to predict whether a PubMed abstract represents an epidemiologic study. Our model performed well on our validation set (precision = 0.846, recall = 0.937, AUC = 0.967), and obtained satisfying results on the test set. This model thus shows promise to accelerate the pace of epidemiologic data curation in rare diseases and could be extended for use in other types of studies and in other disease domains., (©2021 AMIA - All rights reserved.)

This study evaluated the effects of aerobic exercise program on the cardiovascular parameters, body composition, and quality of life (QoL) of people living with human immune virus (HIV). Patients were recruited from the HIV clinic in a tertiary hospital in Nigeria. Fish bowl method was used to randomize the patients to either experimental or control group. Experimental group received nutritional counseling and aerobic exercise program on a treadmill, 3 times a week for a period of 6 weeks, while the control group received only nutritional counseling. Cardiovascular parameters, aerobic fitness, body composition parameters, and QoL were evaluated at baseline and 6 weeks. Descriptive statistics was used to explore demographic data while the hypothesis was tested using inferential statistics of t -test. Alpha level was set at P <0.05. The result showed that there was an improvement in cardiovascular parameters in both groups, attaining significance in the experimental group ( P =0.000). Aerobic fitness increased significantly in experimental group ( P =0.000). Body composition decreased significantly while there was a significant difference in the muscle mass (%) between groups ( P <0.05). All domains of QoL had a significant improvement in both groups ( P <0.005). A 6-week aerobic exercise program in addition to nutritional counseling was able to significantly improve cardiovascular fitness, body composition, and QoL in people living with HIV/acquired immune deficiency syndrome. Nutritional counseling alone can bring about an improvement only in QoL parameters., Competing Interests: CONFLICT OF INTEREST No potential conflict of interest relevant to this article was reported.

Gabbroic rocks have intruded the sedimentary sequence at Ameta in Afikpo basin southeastern Nigeria. Petrographic and geochemical features of the rocks were studied in order to evaluate their genetic and geotectonic history. The petrographic results show that the rocks contain plagioclase, olivine, pyroxene, biotite, iron oxide, and traces of quartz in three samples. Major element characteristics show that the rocks are subalkaline. In addition, the rocks have geochemical characteristics similar to basaltic andesites. The trace elements results show inconsistent concentrations of high field strength elements (Zr, Nb, Th, Ta), moderate enrichment of large-ion lithophile elements (Rb, Sr, Ba) and low concentrations of Ni and Cr. Rare earth element results show that the rocks are characterized by enrichment of light rare earth elements, middle rare earth elements enrichment, and depletion of heavy rare earth elements with slight positive europium anomalies. Zinc concentrations are within the normal range in basaltic rocks. There are extremely high concentrations of Pb in three of the rock samples. The high Pb concentrations in some of these rocks could be as a result of last episodes of magmatic crystallization. The rocks intruded the Asu River Group; organic components in the sedimentary sequence probably contain Pb which has been assimilated into the magma at the evolutionary stage of the magma. Weathering of some rocks that contain galena could lead to an increase in the concentration of lead in the gabbroic rocks, especially when the migration and crystallization of magma take place in an aqueous environment. Nevertheless, high concentration of lead is hazardous to health and environment.

Although approximately 13% of lipomatous tumors occur in the head and neck, most of these are found in the immediate subcutaneous tissues, and lipomas of the deep head and neck tissues are rare. Lipomas consist of adipose tissue separated by fine fibrous trabeculae; if the amount of fibrous tissue is appreciable, the designation of fibrolipoma is used. We describe an unusual case of a parapharyngeal fibrolipoma with airway narrowing and ipsilateral compromise of the carotid artery and internal jugular vein blood flow. Diagnosis of deep head and neck lipomata is facilitated by utilizing computed tomographic analysis and angiography. The transcervical approach to the skull base which allows complete resection of this lesion is described.

There have been several case reports in which various hypertension-inducing regimens have been used in the treatment of postoperative cerebral vasospasm. Regimens have included the used of metaraminal bitarate, norepinephrine with intravascular volume expansion, and high-dose dopamine with mannitol and volume expansion. Clinical response has been very favorable. Our patient improved markedly after administration of dopamine and intravascular volume expansion. Little work has been done to document vasospasm as the cause of the ischemia or to demonstrate increased cerebral blood flow following treatment. We suggest that noninvasive Doppler flow velocity studies may be an ideal tool for the further assessment of these patients.

Anteroposterior radiographs of the fully flexed and slightly externally rotated elbow were obtained in 122 cases of cubital tunnel syndrome (CUTS) and in 33 normal elbows. Medial trochlear lip osteophytes were not found in the studies of normal elbows but were noted in 20% of ulnar nerve entrapment cases. Medial incongruity between the trochlea and the olecranon greater than or equal to 5 mm was found in 29% of CUTS cases and in 6% of normal elbows. The presence of posttraumatic elbow-joint deformities seen on radiographs correlated significantly with the degree of clinical involvement. Depth and area measurements of ulnar nerve compression, performed using a line-art representation of the radiographs, showed a significant (P less than .0001) correlation between decrease in the area of the cubital tunnel and ulnar innervated muscle atrophy. These findings confirm the importance in this syndrome of both osteoarthritis and incongruity of the medial structures of the elbow joint.

We report a case of congestive venous necrosis involving the diencephalon symmetrically, presumably precipitated by a dural arteriovenous malformation (AVM). The patient presented with a 1-month history of intermittent confusion and gait ataxia. The initial radiological work-up revealed a dural AVM. The patient's subsequent deterioration was accompanied by computed tomographic findings of diencephalic congestion. Pathological examination showed subacute necrosis of the diencephalon. We discuss the pathogenesis of this case of subacute diencephalic necorsis and its possible relationship to the entity of subacute diencephalic angioencephalopathy.

Eight patients were found to have traumatic hematomas of the posterior fossa during a 6-year period. There were four patients with extradural hematomas, one patient with a subdural hematoma, and four patients with intracerebellar hematomas. In one patient, clinically significant hematomas were found both in the extradural space and in the cerebellum. Clinical or radiologic evidence of skull fracture was present in each case, and computed tomography scans were diagnostic of a posterior fossa hematoma in all cases. In six of the eight patients, there was clinical deterioration prior to surgical treatment, and in three cases, this was abrupt. All patients underwent suboccipital craniectomy. Six patients survived; four made a good recovery. Our experience indicates that early operation is usually indicated for these lesions.

The radiological appearance of prostate cancer metastasis to the central nervous system often mimics meningioma. The bony change of prostate cancer metastasis resembles the hyperostosis of meningioma because of its blastic rather than lytic nature. On computed tomographic (CT) scan, like meningioma, prostate cancer metastasis enhances homogeneously after the infusion of contrast material. Triple fossa (middle, temporal, and orbital fossae) involvement by a solitary mass without bony destruction is thought to be highly specific for meningiomas. We report a case demonstrating the CT findings typical for a triple fossa meningioma caused by prostate cancer metastasis.

A case of glossopharyngeal neuralgia associated with seizures, syncope, bradycardia, and hypotension is presented. Intracranial section of the 9th cranial nerve and the upper filaments of the 10th cranial nerve resulted in the resolution of all symptoms. The literature is reviewed and the pathogenesis and treatment of the condition are discussed.

The authors review 25 cases of post-traumatic subdural hygroma in adults and report the findings of computer tomography in 4 cases. There was marked diversity in the severity of injury and in chronicity. The site of the lesion was consistently delineated by angiography, but preoperative differentiation from subdural hematoma was possible only with computed tomography. The mortality was 28%. Good recovery occurred in 48%. The prognosis was best among younger patients with subacute or chronic lesions.

Systemic malignant lymphoma rarely produces solitary metastasis to the brain. We report such a case in the cerebellopontine (CP) angle mimicking an acoustic neurinoma. CT scan showed a large, round mass in the CP angle which enhanced homogeneously following contrast infusion. The internal auditory meatus appeared to be eroded. The clinical, radiological, and pathological findings are presented.

A 60-year-old man had a history of frontal headaches and chewing-related oscillopsia. Examination disclosed a retro-orbital epidermoid cyst that had eroded through the lateral orbital wall and under the temporalis muscle. The illusion of movement was due to mechanical displacement of the tumor mass and eye by contraction of the temporalis muscle. Removal of the cyst produced complete remission of the oscillopsia.