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Dive into the research topics where Aaron J. Feinstein is active.

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Featured researches published by Aaron J. Feinstein.


Medical Care | 2013

Variation in receipt of radiation therapy after breast-conserving surgery: assessing the impact of physicians and geographic regions.

Aaron J. Feinstein; Pamela R. Soulos; Jessica B. Long; Jeph Herrin; Kenneth B. Roberts; James B. Yu; Cary P. Gross

Background:Among older women with early-stage breast cancer, patients with a short life expectancy (LE) are much less likely to benefit from adjuvant radiation therapy (RT). Little is known about the impact of physicians and regional factors on the use of RT across LE groups. Objective:To determine the relative contribution of patient, physician, and regional factors on the use of RT. Design:Retrospective cohort. Subjects:Women aged 67–94 years diagnosed with stage I breast cancer between 1998 and 2007 receiving breast-conserving surgery. Measures:We evaluated patient, physician, and regional factors for their association with RT across strata of LE using a 3-level hierarchical logistic regression model. Risk-standardized treatment rates (RSTRs) for the receipt of radiation were calculated according to primary surgeon and region. Results:Approximately 43.6% of the 2253 women with a short LE received RT, compared with 90.8% of the 11,027 women with a long LE. Among women with a short LE, the probability of receiving RT varied substantially across primary surgeons; RSTRs ranged from 27.7% to 67.3% (mean, 43.9%). There was less variability across geographic regions; RSTRs ranged from 42.0% to 45.2% (mean, 43.6%). Short LE patients were more likely to receive RT in areas with high radiation oncologist density (odds ratio, 1.59; 95% confidence interval, 1.07–2.36). Conclusions:Although there is a wide variation across geographic regions in the use of RT among women with breast cancer and short LE, the regional variation was substantially diminished after accounting for the operating surgeon.


Otolaryngology-Head and Neck Surgery | 2016

Diagnostic Accuracy of Fine-Needle Aspiration for Parotid and Submandibular Gland Lesions:

Aaron J. Feinstein; Jose E. Alonso; Sung-Eun Yang; Maie A. St. John

Objective To assess the diagnostic accuracy of fine-needle aspiration (FNA) of the parotid and submandibular glands. Study Design Case series with chart review. Setting Tertiary referral academic center. Subjects and Methods Retrospective analysis was performed for all parotid and submandibular gland FNAs from a single center from 2001 to 2014. There were 1283 FNAs performed for 1076 patients. Of these, 343 cases had surgical follow-up (parotid gland, n = 272; submandibular gland, n = 71). Cases were included where the patient had a preoperative FNA, followed by surgical excision. Correlation of preoperative FNA results to final surgical pathology was performed, with measures of diagnostic accuracy computed. Results Malignancy was identified in 29.0% of parotid tumors and 42.3% of submandibular tumors, based on final pathology. FNA was nondiagnostic due to insufficient cellularity for evaluation in 22 of 343 cases (6.4%) and indeterminate in 39 of 343 cases (11.4%). Diagnostic accuracy in the parotid and submandibular glands for distinguishing benign from malignant pathology was determined as follows, respectively: sensitivity, 75.0% and 91.3%; specificity, 95.1% and 94.1%; positive predictive value, 84.9% and 91.3%; and negative predictive value, 91.2% and 94.4%. Conclusion FNA has high accuracy in identifying malignancy in parotid and submandibular gland lesions when performed at a high-volume center. Preoperative FNA results provide otolaryngologists with valuable diagnostic information that may influence the surgical management of salivary gland tumors. FNA, in conjunction with cross-sectional imaging, is useful in counseling patients for a complete informed consent.


Health Affairs | 2015

Older Women With Localized Breast Cancer: Costs And Survival Rates Increased Across Two Time Periods

Aaron J. Feinstein; Jessica B. Long; Pamela R. Soulos; Xiaomei Ma; Jeph Herrin; Kevin D. Frick; Anees B. Chagpar; Harlan M. Krumholz; James B. Yu; Joseph S. Ross; Cary P. Gross

Significant national attention has been paid to the rising costs of cancer care. However, few studies have evaluated the association between trends in costs and survival outcomes. We used the Surveillance, Epidemiology, and End Results (SEER) Program-Medicare linked database to compare changes in costs and survival rates over time, among women ages 67-94 who were diagnosed with stage II or III breast cancer in 1994-96 or 2004-06. We found that median cancer-related costs increased from


Head and Neck-journal for The Sciences and Specialties of The Head and Neck | 2016

Hyponatremia and perioperative complications in patients with head and neck squamous cell carcinoma

Aaron J. Feinstein; John Davis; Lyndon Gonzalez; Keith E. Blackwell; Elliot Abemayor; Abie H. Mendelsohn

12,335 to


Annals of Otology, Rhinology, and Laryngology | 2015

Utility of the transnasal esophagoscope in the management of chemoradiation-induced esophageal stenosis.

Kevin A. Peng; Aaron J. Feinstein; Jonathan Salinas; Dinesh K. Chhetri

17,396 among women with stage II disease, and from


American Journal of Otolaryngology | 2016

Laryngeal oncocytic cystadenomas masquerading as laryngoceles

Aaron J. Feinstein; Kevin A. Peng; Sunita Bhuta; Elliot Abemayor; Abie H. Mendelsohn

18,107 to


Diagnostic Pathology | 2015

An unusual initial presentation of mantle cell lymphoma arising from the lymphoid stroma of warthin tumor

Ramir S. Arcega; Aaron J. Feinstein; Sunita Bhuta; Keith E. Blackwell; Nagesh Rao; Sheeja T. Pullarkat

32,598 among women with stage III disease. Although the median cost of breast surgery declined between the two study periods, the median cost of chemo- and radiation therapy increased substantially, leading to an overall rise in cancer-related costs. Meanwhile, adjusted overall five-year survival improved, from 67.8 percent to 72.5 percent for women with stage II disease and from 38.5 percent to 51.9 percent for those with stage III disease. These findings suggest that increases in cancer care costs have been accompanied by improved outcomes. Future work should identify opportunities to optimize efficiency in cancer care.


Archives of Otolaryngology-head & Neck Surgery | 2017

Endoscopic Management of Subglottic Stenosis

Aaron J. Feinstein; Alex Goel; Govind Raghavan; Jennifer Long; Dinesh K. Chhetri; Gerald S. Berke; Abie H. Mendelsohn

Recent studies suggest that hyponatremia is associated with perioperative morbidity and mortality after general surgical procedures, as well as mortality among medical inpatients. We investigated the association of hyponatremia with perioperative complications in patients undergoing surgical resection of head and neck squamous cell carcinoma (HNSCC).


Annals of Otology, Rhinology, and Laryngology | 2017

Measurement of Cough Aerodynamics in Healthy Adults

Aaron J. Feinstein; Zhaoyan Zhang; Dinesh K. Chhetri; Jennifer Long

Objective: This study aimed to describe management of esophageal stenosis after chemoradiation therapy for head and neck squamous cell carcinoma (HNSCC), with particular emphasis on techniques and outcomes with the use of the transnasal esophagoscope (TNE) in the office as well as operating room settings. Methods: Retrospective analysis of all patients with esophageal stenosis following head and neck cancer radiation, with or without chemotherapy, and managed with TNE-assisted esophageal dilation over a 5-year period. Preoperative and postoperative swallowing function were assessed objectively with the Functional Outcome Swallowing Scale (FOSS; ranging from score 0, a normal diet, to score 5, complete dependence on nonoral nutrition). Results: Twenty-five patients met inclusion criteria. The mean pretreatment FOSS score was 4.4, whereas the mean posttreatment FOSS score was 2.7 (Wilcoxon signed-rank test, P < .001). Prior to dilation, 16 patients were completely gastrostomy-tube dependent (FOSS 5), of whom 12 (75%) were able to tolerate oral nutrition for a majority of their diet following treatment according to our protocol. No complications were noted. Conclusion: Dysphagia following chemoradiation therapy for HNSCC is often related to esophageal stenosis. With the aid of TNE, we have developed a successful treatment strategy for esophageal stenosis with improved success rates.


American Journal of Otolaryngology | 2017

Treatment outcomes in veterans with HPV-positive head and neck cancer

Aaron J. Feinstein; Sophie Shay; Elena Chang; Michael S. Lewis; Marilene B. Wang

OBJECTIVE To describe an experience with laryngeal oncocytic cystadenomas and review the published literature regarding this uncommon diagnosis. METHODS AND RESULTS A clinical review of patients presenting with cystic laryngeal masses in an urban academic medical center between January and December 2013 was performed. Three patients, two female and one male, with a mean age of 68 years, were diagnosed with oncocytic cystadenomata of the larynx. Major presenting symptoms included dysphonia, globus, and ipsilateral otalgia. Endoscopic examinations revealed a cystic structure arising from varied subsites of the larynx: laryngeal ventricle, aryepiglottic fold, and pre-epiglottic space. Cross-sectional radiographic imaging was obtained in each case. The patients were treated with transoral (CO2) laser microsurgery (TLM). In all three cases, pathological analysis revealed oncocytic cystadenoma with clear margins. CONCLUSIONS Oncocytic cystadenoma is a rare entity of the larynx predominantly affecting elderly patients. Clinical presentation and imaging may suggest the diagnosis of an internal laryngocele. Complete excision is both diagnostic and therapeutic, and typically can be achieved using TLM. When clear margins are obtained, no adjuvant therapy is indicated. Although laryngoceles and malignancies are more commonly encountered, oncocytic cystadenomas should remain in the differential of cystic laryngeal masses.

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Jennifer Long

University of California

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Jose E. Alonso

University of California

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