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Background: Although hematogenous malignancy is a risk factor for poorer prognosis in Merkel cell carcinoma (MCC), current guidelines make no specific recommendations for surveillance. Objective: We aim to characterize MCC-specific mortality compared to other causes of death for patients with hematologic malignancy in MCC, which will guide workup and surveillance strategies. Methods: The Surveillance, Epidemiology, and End Results-18 registry was queried for MCC patients with chronic lymphocytic leukemia (CLL) or non-Hodgkin lymphoma (NHL). Results: Of 8519 patients with MCC, 146 (1.7%) had CLL and 234 (2.8%) had NHL. Chronic lymphocytic leukemia patients had 5-year cumulative incidence of MCC-specific mortality of 38.4% versus 28.4% in patients without CLL/NHL. For both cohorts, oncologic risk was highest within the first three years of diagnosis with competing risks favored thereafter. On competing risk regression, a history of CLL trended toward statistical significance with poorer MCC-specific mortality (subdistribution hazard ratio: 1.33, 95% CI: 0.963-1.834, P=0.084), while NHL was not prognostic. Conclusions: Merkel cell carcinoma patients with CLL may benefit from more aggressive initial management. Surveillance for similar length in CLL patients with MCC may be appropriate; this co-morbidity did not affect the timeframe by which the risk of competing causes of death exceeded oncologic risks.

AimThe role of the right ventricle (RV) in pulseless electrical activity (PEA) is poorly defined outside of pulmonary embolism. We aimed to (1) describe the continuous electrocardiographic (ECG) manifestations of RV strain (RVS) preceding PEA/Asystole in-hospital cardiac arrest (IHCA), and (2) determine the prevalence and clinical causes of RVS in PEA/Asystole IHCA.MethodsIn this retrospective cross-sectional study, we evaluated 140 patients with continuous ECG data preceding PEA/Asystole IHCA. We iteratively defined the RVS continuous ECG pattern using the development cohort (93 patients). Clinical cause determination was blinded from ECG analysis in the validation cohort (47 patients).ResultsThe overall cohort had mean age 62.1 ± 17.1 years, 70% return of spontaneous circulation and 30% survival to discharge. RVS continuous ECG pattern was defined as progressive RV depolarization delay in lead V1 with at least one supporting finding of RV ischaemia or right axis deviation. Using this criterion, 66/140 (47%) cases showed preceding RVS. In patients with RVS, no pulmonary embolism was found in 9/13 (69%) autopsies and 8/10 (80%) CT chest angiograms. The positive and negative predictive value of RVS pattern for diagnosing a respiratory cause of PEA/Asystole in the validation cohort was 81% [95% CI 64-98%] and 58% [95% CI 36-81%], respectively.ConclusionRVS continuous ECG pattern preceded 47% of PEA/Asystole IHCA and is predictive of a respiratory cause of cardiac arrest, not just pulmonary embolism. These suggest that rapid elevations in pulmonary pressures and resultant RV failure may cause PEA in respiratory failure.

ObjectivesTo create reliable predictive metrics of unilateral disease using spatial tracking from a fusion device, thereby improving patient selection for hemi-gland ablation of prostate cancer.Patients and methodsWe identified patients who received magnetic resonance imaging (MRI)/ultrasound-guided biopsy and radical prostatectomy at a single institution between 2011 and 2018. In addition to standard clinical features, we extracted quantitative features related to biopsy core and MRI target locations predictive of tumour unilaterality. Classification and Regression Tree (CART) analysis was used to create a decision tree (DT) for identifying cancer laterality. We evaluated concordance of model-determined laterality with final surgical pathology.ResultsA total of 173 patients were identified with biopsy coordinates and surgical pathology available. Based on CART analysis, in addition to biopsy- and MRI-confirmed disease unilaterality, patients should be further screened for cancer detected within 7 mm of midline in a 40 mL prostate, which equates to the central third of any-sized prostate by radius. The area under the curve for this DT was 0.82. Standard diagnostics and the DT correctly identified disease laterality in 73% and 80% of patients, respectively (P = 0.13). Of the patients identified as unilateral by standard diagnostics, 47% had undetected contralateral disease or were otherwise incorrectly identified. This error rate was reduced to 17% (P = 0.01) with the DT.ConclusionUsing spatial tracking from fusion devices, a DT was more reliable for identifying laterality of prostate cancer compared to standard diagnostics. Patients with cancer detected within the central third of the prostate by radius are poor hemi-gland ablation candidates due to the risk of midline extension of tumour.

Over the past decade, many new biologic and small-molecule drugs have been approved for psoriasis. These specialty drugs tend to be expensive and place financial burden on the healthcare system as well as patients. This study aims to explore trends in Medicare Part D spending and prescription patterns for psoriasis drugs by dermatologists. The Centers for Medicare and Medicaid Services' (CMS) Medicare Part D Public Use Files from 2013 to 2017 were utilized to examine prescription rates and pricing FDA-approved psoriasis drugs. From 2013 to 2017, psoriasis drugs accounted for 41% of total Medicare Part D spending by dermatologists in the database, of which biologics accounted for 86.5%. The proportion of psoriasis-related spending increased from 36% of total spending in 2013 to 53% in 2017. Prescriptions of etanercept decreased while prescribers of newly approved drugs increased significantly. The cost per day of biologics were significantly variable in 2013 but converged toward similar costs in 2017. Psoriasis prescriptions comprise a large, increasing proportion of Medicare Part D spending related to dermatology. These increasing costs have significant implications for the healthcare system and affect out-of-pocket costs for patients who rely on such medications. [ABSTRACT FROM AUTHOR]

Drug reaction and eosinophilia with systemic symptoms (DRESS), also known as drug‐induced hypersensitivity syndrome (DIHS), shares features with hemophagocytic lymphohistiocytosis (HLH), most notably fever, rash, and internal organ involvement. However, there is increasing recognition of drug‐induced (secondary) HLH and biopsy‐proven hemophagocytosis in DRESS, suggesting that HLH and DRESS not only overlap but also may be diseases on the same spectrum of immune dysfunction. To characterize existing literature on HLH/DRESS overlap, we queried the PubMed/MEDLINE database for 23 cases of HLH‐DRESS codiagnosis. Average time‐to‐onset of rash after exposure to inciting drug was 2.7 weeks. Fourteen cases (61%) clinically worsened despite initial therapy, prompting a workup with diagnosis of HLH on average 2.3 weeks after diagnosing DRESS. Nine cases met HLH diagnostic criteria and had a RegiSCAR score ≥4. Nine cases met one set of criteria with a presentation suggestive of the other. Five cases met neither criteria. A patient presenting with fever, generalized rash, bicytopenia, and internal organ involvement after drug exposure was most predictive of meeting diagnostic criteria for both HLH and DRESS. Treatment was highly variable, although most initiated systemic corticosteroids with/without IVIG, plasmapheresis, or etoposide. Patients with poor outcomes in this review were treated using steroid monotherapy and had viral reactivation. Dermatologists should consider the possibility of HLH in any patient presenting with fever, rash, internal organ involvement, and cytopenia. Additional studies will be necessary to further characterize HLH and DRESS overlap and determine optimal management. [ABSTRACT FROM AUTHOR]

Background: Dermatologic conditions comprise a significant number of emergency department visits in the pediatric population in the United States. Understanding key predictors of emergency department utilization for dermatologic conditions is important to reduce inappropriate use. Methods: A total of 44 554 sampled patient emergency department visits, consisting of patients less than 18 years of age, were collected from the National Hospital Ambulatory Medical Care Survey between 2009 to 2015. ICD‐9 codes were used to define dermatologic conditions versus non‐dermatologic conditions with univariate and multivariate analyses used to identify factors significantly correlated with dermatologic emergency department utilization. Results: A total of 13 681 691 pediatric dermatologic emergency department visits (weighted) were evaluated over the seven‐year period, representing 6.4% of total pediatric emergency department visits. The most common dermatologic diagnosis was cellulitis (25.6% of visits). The majority of patients were five years old or younger (54.4%). Patients with primary dermatologic conditions were more likely to be triaged as non‐urgent (16.7%) or semi‐urgent (45.8%) than patients without dermatologic conditions. Only 2.1% of patients with dermatologic conditions required further observation or admission. On further regression modeling, age ≤ 5, semi‐urgent or non‐urgent acuity, Medicaid insurance, and residence in the Northeastern or Midwestern United States were significantly associated with presentation to the emergency department with a dermatologic condition when compared to non‐dermatologic condition. Conclusions: Dermatologic conditions continue to comprise a significant number of ED visits in the pediatric population. Increased ED utilization by vulnerable pediatric populations highlights the need to better direct or provide access to outpatient dermatologic care. [ABSTRACT FROM AUTHOR]

Tyrosine kinase inhibitors are a class of targeted anticancer drugs that inhibit cancer cell proliferation by inactivating proteins involved in signal transduction cascades. Various cutaneous adverse events have been observed after tyrosine kinase inhibitor administration, including Sweet syndrome. We queried the PubMed database to identify 14 cases of Sweet syndrome thought to be secondary to tyrosine kinase inhibitors. Tyrosine kinase inhibitor‐induced Sweet syndrome had a median of 2 months latency following drug administration. All cases but one had morphologic features classic for Sweet syndrome (erythematous and tender papules, plaques, or nodules). All cases also had classic histopathologic findings (dermal neutrophilic infiltrate without vasculitis or necrosis). Using diagnostic criteria for drug‐induced Sweet syndrome and the Naranjo Drug Reaction Probability Scale for a drug‐induced cutaneous eruption, we found that six cases favored a drug‐induced etiology over malignancy, two cases favored a malignancy‐associated Sweet syndrome, and the remaining eight met drug‐induced Sweet syndrome criteria but had low Naranjo scores. Nine cases resulted in medication discontinuation, while five cases continued anticancer therapy and were treated only with corticosteroids with quick resolution of skin lesions. Dermatologists should be aware of this adverse cutaneous reaction to tyrosine kinase inhibitors and should treat on a case‐by‐case basis, though limited evidence in this review suggests that oncologic therapy may safely be continued with prompt corticosteroid treatment. [ABSTRACT FROM AUTHOR]

Dear Editor, Mucoepidermoid carcinoma is typically a low-grade malignancy of the salivary glands. In addition, it is possible that cases of secondary metastasis of mucoepidermoid carcinomas could mistakenly be coded as primary tumors, and the workup and histopathologic examination to exclude another primary site or differentiate this tumor from adenosquamous carcinoma may have varied between patients. Mucoepidermoid carcinoma of the skin: a distinct entity from adenosquamous carcinoma: a case study with a review of the literature. [Extracted from the article]