12 results on '"Feiz-Erfan, Iman"'
Search Results
2. Efficacy of Trans-septal Trans-sphenoidal Surgery in Correcting Visual Symptoms Caused by Hematogenous Metastases to the Sella and Pituitary Gland.
- Author
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Feiz-Erfan, Iman, Rao, Ganesh, White, William L, and McCutcheon, Ian E
- Abstract
The rate of symptomatic improvement of visual symptoms associated with hematogenous metastases to the sella and pituitary was evaluated retrospectively in seven patients (five men, two women; mean age, 52.3 years) with primarily visual symptoms (diplopia alone in three, diplopia with blurred vision in one, blurred vision alone in one, loss of peripheral vision in one, and unilateral complete blindness in one). Symptom duration ranged from 0.5 to 2 months. The primary diseases were non-small cell lung cancer in two patients, renal cell carcinoma in two patients, prostate cancer in two patients, and medullary thyroid carcinoma in one patient. All patients had widespread metastatic disease. Three patients had a suprasellar tumoral component. One patient had a clival extension, and one patient had extension into the cavernous sinus. All underwent trans-sphenoidal surgery to correct visual symptoms. Gross total resection was achieved in three patients. Subtotal resections and a partial resection were performed in three patients and one patient, respectively. Surgical blood loss averaged 282 mL. One patient died from sepsis. Five patients developed complications (cerebrospinal fluid leakage in three, diabetes insipidus in two, anterior pituitary dysfunction in two, and colitis in one). At a mean follow-up of 15 months, three patients were alive. Visual symptoms improved in five patients and were unchanged in two. Trans-sphenoidal surgery helped improve visual symptoms in most patients. The morbidity rate was high and likely related to the locally destructive and extensive nature of the lesions in overall morbid patients with widespread metastatic disease. Unless nonoperative measures can provide equal results, however, this approach provides reasonable palliation. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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3. Bedside twist drill craniostomy for chronic subdural hematoma: a comparative study
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Horn, Eric M., Feiz-Erfan, Iman, Bristol, Ruth E., Spetzler, Robert F., and Harrington, Timothy R.
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SUBDURAL hematoma , *CRANIOTOMY , *HEMATOMA , *HOSPITAL care , *MORTALITY - Abstract
Abstract: Background: Although the bedside twist drill craniostomy is used to treat chronic subdural hematomas, the efficacy of this technique has not been compared with that of standard treatments (operative bur hole or craniotomy). Methods: Twist drill craniostomy was compared with operative bur hole or craniotomy in a prospective nonrandomized trial. The inclusion criteria were computed tomographic evidence of chronic subdural hematoma (isodense or hypodense compared with brain) and symptoms indicating the need for drainage. Selection of the procedure depended on the on-call surgeon''s preference. Clinical success of the procedure, recurrence, length of hospitalization, complications, and neurologic outcome were compared. Results: Between August 2001 and October 2002, 79 consecutive patients with 91 chronic subdural hematomas were treated (67 unilateral and 12 bilateral) at our institution. Fifty-five patients were treated with twist drill craniostomy and 24 with bur hole or craniotomy. There were no differences in the mean age of presentation, thickness of hematoma, length of hospitalization, reoperation rate, mortality rates, or ability to be discharged to home between the 2 groups. There was no difference in the neurologic outcomes in the 57 of the 79 patients available for follow-up. Conclusions: Twist drill craniostomy performed at the bedside is just as effective in treating chronic subdural hematomas as bur holes or craniotomy in the operating room. This procedure can most often be the first line of treatment in patients with symptomatic chronic subdural hematomas. [Copyright &y& Elsevier]
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- 2006
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4. P80. Results of Surgical Treatment for Metastatic Disease Involving the Sacrum
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Feiz-Erfan, Iman, Nader, Remi, Suki, Dima, Mendel, Ehud, Chakrabarti, Indro, Gokaslan, Ziya, and Rhines, Laurence
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- 2006
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5. Postoperative Acute Sialadenitis after Skull Base Surgery.
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Kim, Louis J, Klopfenstein, Jeffrey D, Feiz-Erfan, Iman, Zubay, Geoffrey P, and Spetzler, Robert F
- Abstract
During retrosigmoid and far-lateral skull base surgical approaches, the head may be positioned at the extreme limits of rotation and flexion. In rare instances, patients may develop acute sialadenitis after surgery as a result of this positioning technique. Over a 4-year period, five patients developed postoperative sialadenitis after undergoing either a retrosigmoid craniotomy in the supine position (
n = 4) or a far-lateral craniotomy in the park-bench position. Based on all the retrosigmoid and far-lateral approaches performed by the senior author (RFS), the incidence of sialadenitis was 0.84%. In all five patients, the acute sialadenitis was not clinically apparent at the conclusion of the operation. However, the diagnosis was evident within 4 hours of surgery. In each case, the neck swelling in the vicinity of the submandibular gland was contralateral to the craniotomy site. All patients were treated with intravenous hydration and antibiotic therapy. One patient was extubated immediately after surgery with no obvious evidence of sialadenitis. However, she required emergent reintubation due to airway compromise. The mechanism of acute sialadenitis in these patients was obstruction of the salivary duct caused by surgical positioning. This previously unreported observation in patients undergoing skull base surgery deserves consideration during perioperative and postoperative management. [ABSTRACT FROM AUTHOR]- Published
- 2008
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6. Retroperitoneal approach for lumbar interbody fusion with anterolateral instrumentation for treatment of spondylolisthesis and degenerative foraminal stenosis
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Klopfenstein, Jeffrey D., Kim, Louis J., Feiz-Erfan, Iman, and Dickman, Curtis A.
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LUMBAR vertebrae , *LUMBOSACRAL region , *STENOSIS , *SPONDYLOLISTHESIS , *BACKACHE , *SURGERY - Abstract
Abstract: Background: An alternative approach for the treatment of the degenerative or unstable lumbar spine using retroperitoneal lateral LIF with anterolateral screw-plate or screw-rod fixation is introduced. Special attention is given to application of this procedure in patients who have undergone prior lumbar surgery. Methods: Between 1998 and 2001, 14 patients underwent lateral LIF with anterolateral instrumentation to treat degenerative foraminal stenosis or spondylolisthesis. Eleven patients (79%) had undergone prior posterior lumbar surgery, 7 of whom were also fused at that time. All patients first presented with mechanical back pain, radicular pain, or both. The mean follow-up was 21 months (range, 8 to 36 months). Results: Radicular pain and mechanical back pain significantly improved in 71% and 54% of patients, respectively. Of the 9 patients with preoperative neurological deficits, 7 were intact or had improved at their follow-up examination. One patient developed postoperative radiculopathy contralateral to his original symptoms. Radiography confirmed good positioning of the hardware and evidence of fusion in all 14 patients. No major complications occurred. Conclusions: Retroperitoneal lateral LIF with anterolateral instrumentation is an attractive alternative for the treatment of the degenerative or unstable lumbar spine in the absence of significant spinal stenosis. This approach is particularly useful for treating spondylolisthesis or degenerative foraminal stenosis in the postoperative lumbar spine. [Copyright &y& Elsevier]
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- 2006
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7. Location of Traumatic Cranial Epidural Hematoma Correlates with the Source of Hemorrhage: A 12-Year Surgical Review.
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Charcos, Iris B., Wong, Tina W., Larsen, Brett R., Azurdia, Adrienne R., Gridley, Daniel G., Vail, Sydney J., Hollingworth, Alexzandra K., Lettieri, Salvatore C., and Feiz-Erfan, Iman
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EPIDURAL hematoma , *SURGICAL blood loss , *HEMORRHAGE , *BRAIN injuries , *COMPUTED tomography - Abstract
Epidural hematoma (EDH) can result in a catastrophic outcome of traumatic brain injury. Current management guidelines do not consider the source of hemorrhage in decision making. The purpose of this study was to examine the relationship between EDH location and the source of hemorrhage. We report retrospectively reviewed, prospectively obtained surgical data of patients with acute traumatic cranial EDH treated between 2007 and 2018. Computed tomography (CT) scans were used to categorize EDH location as lateral or medial. The source of hemorrhage was identified intraoperatively by a single surgeon. Overall, of 92 evacuated EDHs (in 87 patients), 71 (77.2%) were in the lateral location. Arterial bleeding was the cause of EDH in 63.4% of the lateral EDHs and 9.2% of the medial EDHs (P < 0.0001). In the cases where surgery was done primarily to treat EDH, 65.3% had an arterial bleed source (P < 0.0001). In those treated for primary reasons other than EDH evacuation, 75% had a venous bleed source (P = 0.002). The location of EDH correlates with the source of hemorrhage. The decision to operate on EDH may be influenced by this factor. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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8. Atlanto-Occipital Transarticular Screw Fixation for the Treatment of Traumatic Occipitocervical Instability in the Pediatric Population.
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Hassler, Kenneth R., Jamshidi, Ramin, Vail, Sydney J., Connell, Mary J., Chundu, Kote, Lettieri, Salvatore C., and Feiz-Erfan, Iman
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ATLANTO-occipital joint , *SCREWS , *REOPERATION , *SURGICAL complications - Abstract
Atlanto-occipital transarticular screw fixation (AOTSF) has rarely been reported for fixation of the craniovertebral junction (CVJ). A retrospective chart review of all pediatric patients (less than 18 years of age) with an attempt of AOTSF for fixation of traumatic CVJ instability was conducted. A total of 4 patients (2 boys and 2 girls; ages 2, 3, 5, and 8 years) who suffered from acute traumatic CVJ instability managed during 2007–2018 underwent an attempted AOTSF. In 2 patients, this method was technically successful. In the other 2 instances, we were not able to engage the screw into the occipital condyle. These were converted to standard occipital plate, rod, and screw fixation. All were placed in a halo subsequently for a minimum of 3 months. Three patients were fused at last follow-up (range, 17–48 months). One patient after successful AOTSF did not fuse. There were no surgical complications or revision procedures. AOTSF was feasible in half of pediatric patients suffering from traumatic CVJ instability. Therefore, intraoperative salvage options and strategies should be on hand readily. In the pediatric population, where bony anatomy may pose challenges to fixation, this technique may offer a viable first-line option in selected cases, despite the overall modest success rate. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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9. Natural History of a Patient with Sacral Chordoma: Case Report and Literature Review.
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Kennamer, Brooke T., Gridley, Daniel G., Rhines, Laurence D., Nair, Geetha R., Lettieri, Salvatore C., Davis, Karole M., and Feiz-Erfan, Iman
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CHORDOMA , *NATURAL history , *LITERATURE reviews , *SURGICAL excision , *FECAL incontinence , *NEEDLE biopsy - Abstract
Chordomas are rare, slow-growing, locally aggressive, malignant tumors of the spine. Chordomas are conventionally treated with surgical resection with or without radiation. There is an absence of literature documenting the natural history of a primary sacral chordoma. A 65-year-old man presented with rectal pain, constipation, urinary and fecal incontinence, S1 radiculopathy, and a palpable rectal mass. A needle biopsy confirmed the pathologic diagnosis of sacral chordoma. The patient declined to have surgery because of the surgical risks involved. He was managed conservatively with supportive care only. The patient was routinely followed in clinic and had a subjective and objective excellent quality of life with adequate pain management. Meanwhile, his neurologic status did not deteriorate. During follow-up, some posterolateral aspects of the chordoma regressed. However, the bulk of the lesion continued to slowly progress. The patient survived for 7.5 years. He eventually succumbed to urosepsis and new-onset peritoneal metastasis. To our knowledge, the patient is the only documented case in the literature of an untreated biopsy-proven sacral chordoma. The patient's tumor was intended for resection, and therefore comparable with data from treated chordomas. The patient's survival is similar to the median survival in treated chordomas. The patient's survival was despite negative prognosticators, such as advanced age of the patient and high sacral location above S2. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
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10. Incidence of blunt cerebrovascular injury in low-risk cervical spine fractures
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Kopelman, Tammy R., Leeds, Steven, Berardoni, Nicole E., O'Neill, Patrick J., Hedayati, Poya, Vail, Sydney J., Pieri, Paola G., Feiz-Erfan, Iman, and Pressman, Melissa A. Singer
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CEREBROVASCULAR disease , *CERVICAL vertebrae injuries , *TREATMENT of fractures , *SUBLUXATION , *RETROSPECTIVE studies , *MEDICAL screening - Abstract
Abstract: Background: It has been suggested that specific cervical spine fractures (CSfx) (location at upper cervical spine [CS], subluxation, or involvement of the transverse foramen) are predictive of blunt cerebrovascular injury (BCVI). We sought to determine the incidence of BCVI with CSfx in the absence of high-risk injury patterns. Methods: We performed a retrospective study in patients with CSfx who underwent evaluation for BCVI. The presence of recognized CS risk factors for BCVI and other risk factors (Glasgow coma score ≤ 8, skull-based fracture, complex facial fractures, soft-tissue neck injury) were reviewed. Patients were divided into 2 groups based on the presence/absence of risk factors. Results: A total of 260 patients had CSfx. When screened for high-risk pattern of injury for BCVI, 168 patients were identified and 13 had a BCVI (8%). The remaining 92 patients had isolated low CSfx (C4–C7) without other risk factors for BCVI. In this group, 2 patients were diagnosed with BCVI (2%). Failure to screen all patients with CSfx would have missed 2 of 15 BCVIs (13%). Conclusions: We propose that all CS fracture patterns warrant screening for BCVI. [Copyright &y& Elsevier]
- Published
- 2011
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11. Significant Pediatric Morbidity and Mortality from Intracranial Ballistic Injuries Caused by Nonpowder Gunshot Wounds.
- Author
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O'Neill, Patrick J., Lumpkin, Mary Foster, Clapp, Benjamin, Kopelman, Tammy R., Matthews, Marc R., Cox, Jordy C., Caruso, Daniel M., and Feiz-Erfan, Iman
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GUNPOWDER , *PROJECTILES , *CARBON dioxide , *WOUNDS & injuries , *CAUSES of death , *CHILD mortality - Abstract
Nonpowder (ball-bearing and pellet) weapons derive their source of energy from compressed air or carbon dioxide. Such weapons are dangerous toys that cause serious injuries and even death to children and adolescents. A retrospective chart review study was undertaken to describe nonpowder gun injuries at a southwestern US urban level I adult and pediatric trauma center. Specific emphasis was placed on intracranial injuries. Over the past 6 years, a total of 29 pediatric and 7 adult patients were identified as having nonpowder firearm injuries. The patient population was overwhelmingly male (89.7%; mean age, 11 years). Overall, 17 out of 29 pediatric patients (56.8%) sustained serious injury. Nine patients (30.0%) required operation, 6 (20.7%) sustained significant morbidity, and there were 2 deaths (6.9%). Injuries to the brain, eye, head, and neck were the most common sites of injury (65.6%). Specific intracranial injuries in 3 pediatric patients are described that resulted in the death of 2 children. We suggest that age warning should be adjusted to 18 years or older for unsupervised use to be considered safe of these potentially lethal weapons. Copyright © 2009 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]
- Published
- 2009
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12. Transcallosal Resection of Hypothalamic Hamartoma for Intractable Epilepsy.
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Yu-tze Ng, Rekate, Harold L., Prenger, Erin C., Chung, Steve S., Feiz-Erfan, Iman, Wang, Norman C., Varland, Maggie R., and Kerrigan, John F.
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EPILEPSY , *HYPOTHALAMUS , *BRAIN diseases , *SPASMS , *HEMANGIOMAS , *SURGICAL excision , *BLOOD-vessel tumors - Abstract
Purpose: To present the results of transcallosal surgical resection of hypothalamic hamartoma (HH) in 26 patients with refractory epilepsy in a prospective outcome study. Methods: Patients with refractory epilepsy symptomatic to HH were referred for surgical resection of their HH (mean age, 10.0 years; range, 2.1–24.2 years). A transcallosal, interforniceal approach was used to remove and/or disconnect the hamartoma. Volumetry was obtained on pre- and postoperative brain MRI scans to determine percentage of resection. Outcome assessment included determination of postoperative seizure frequencies in comparison to baseline and the incidence of postoperative complications. Postoperative changes in cognitive and behavioral functioning, in comparison to baseline, were elicited by parental report. Results: The average postoperative follow-up interval was 20.3 months (range, 13–28 months). Fourteen (54%) patients were completely seizure free, and nine (35%) had at least a 90% improvement in total seizure frequency. Parents reported postoperative improvement in behavior in 23 (88%) patients and in cognition in 17 (65%) patients. Transient postoperative memory disturbance was seen in 15 (58%) patients, but persisted in only two (8%). Two (8%) patients had persisting endocrine disturbance requiring hormone replacement therapy (diabetes insipidus and hypothyroidism in one each). With univariate analysis, the likelihood of a seizure-free outcome correlated with younger age, shorter lifetime duration of epilepsy, smaller preoperative HH volume, and 100% HH resection. Conclusions: Refractory epilepsy associated with HH can be safely and effectively treated with surgical resection by a transcallosal, interforniceal approach. Short-term memory deficits appear to be transient for most patients, and family perception of the impact of surgery on cognitive and behavioral domains is favorable. Complete resection yields the best result. [ABSTRACT FROM AUTHOR]
- Published
- 2006
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