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Surgery / General Surgery - Endocrine & Oncologic

Amy E. Cyr, MD

Current Position
Assistant Professor, Surgery
Division of General Surgery
Section of Endocrine and Oncologic Surgery


Specialty Areas
Breast Surgery
Breast Oncology
Breast Health

Patients Seen At
Barnes-Jewish St. Peters Hospital
100 Entrance Way
St. Peters , MO  63376
(636) 916-7160
Fax:   (636) 916-7190
View Driving Directions

Center for Advanced Medicine
4921 Parkview Place, Suite F, 5th Floor
St. Louis, MO  63110
(636) 916-7160
Fax:   (636) 916-7190
View Floor Map  View Campus Map   View Driving Directions

Mailing Address
Washington University School of Medicine
Department of Surgery
CB 8109, 660 S. Euclid Ave
St. Louis, MO  63110

Areas of Clinical Interest
Breast oncology, breast imaging, breast biopsy, benign breast disease

Board Certification
Surgery -- Certified

Medical Education
B.A.: Creighton University, Omaha, NE, 1997
Medical School: University of Nebraska School of Medicine, Omaha, NE, 2002
Residency: General Surgery, New Hanover Regional Medical Center, Wilmington, NC, 2006
Chief Resident: General Surgery, New Hanover Regional Medical Center, Wilmington, NC, 2007
Fellowship: Breast Surgery, Washington University School of Medicine, St. Louis MO, 2010
Hospital Affiliations
Barnes-Jewish Hospital, St. Louis
Barnes-Jewish St. Peters Hospital, St. Peters MO
Barnes-Jewish West County Hospital, St Louis


Selected or Recent Journal Articles
Garsa AA, Ferraro DJ, Dewees TA, Deshields TL, Margenthaler JA, Cyr AE, Naughton M, Aft R, Gillanders WE, Eberlein T, Matesa MA, Ochoa LL, Zoberi I. A prospective longitudinal clinical trial evaluating quality of life after breast-conserving surgery and high-dose-rate interstitial brachytherapy for early-stage breast cancer. Int J Radiat Oncol Biol Phys. 2013 Dec 1.

Margenthaler JA, Johnson FE, Cyr AE. Intensity of Follow-Up After Breast Cancer Surgery: Low Versus High? Ann Surg Oncol. 2013 Sep 18.

Martin-Dunlap TM, Cyr AE, Al Mushawah F, Gao F, Margenthaler JA. Does the volume of ductal carcinoma in situ impact the positive margin rate in patients undergoing breast conservation for invasive breast cancer? J Surg Res. 2013 Sep.

Bunting PW, Cyr AE, Margenthaler JA. Randomized trial evaluating intraoperative ultrasound guidance for palpable breast cancer excision. Expert Rev Med Devices. 2013 May.

Tan M, Howard A, Cyr AE. Malignant melanoma of the breast: a case report and review of the literature. Tumori. 2013 Jan-Feb.

Cyr A, Gao F, Gillanders WE, Aft RL, Eberlein TJ, Margenthaler JA. Disease Recurrence in Sentinel Node-Positive Breast Cancer Patients Forgoing Axillary Lymph Node Dissection. Ann Surg Oncol. 2012 Aug 14.

Margenthaler JA, Cyr AE. Molecular profiling assays in breast cancer: beyond prime time and into syndication. Oncology (Williston Park). 2012 Apr.

Yu J, Mushawah FA, Taylor ME, Cyr AE, Gillanders WE, Aft RL, Eberlein TJ, Gao F, Margenthaler JA. Compromised margins following mastectomy for stage I-III invasive breast cancer. J Surg Res. 2012 Sep.

Atkins J, Mushawah FA, Appleton CM, Cyr AE, Gillanders WE, Aft RL, Eberlein TJ, Gao F, Margenthaler JA. Positive margin rates following breast-conserving surgery for stage I-III breast cancer: palpable versus nonpalpable tumors. J Surg Res. 2012 Sep.

Fisher CS, Mushawah FA, Cyr AE, Gao F, Margenthaler JA. Ultrasound-guided lumpectomy for palpable breast cancers. Ann Surg Oncol. 2011 Oct.

Cyr AE, Margenthaler JA, Conway J, Rastelli AL, Davila RM, Gao F, Dietz JR. Correlation of ductal lavage cytology with ductoscopy-directed duct excision histology in women at high risk for developing breast cancer: a prospective, single-institution trial. Ann Surg Oncol. 2011 Oct.

Cyr A, Gillanders WE, Aft RL, Eberlein TJ, Margenthaler JA. Breast cancer in elderly women (≥ 80 years): variation in standard of care? J Surg Oncol. 2011 Mar 1.

Cyr AE, Novack D, Trinkaus K, Margenthaler JA, Gillanders WE, Eberlein TJ, Ritter J, Aft RL. Are we overtreating papillomas diagnosed on core needle biopsy? Ann Surg Oncol. 2011 Apr.

Cyr A, Gillanders WE, Aft RL, Eberlein TJ, Gao F, Margenthaler JA. Micrometastatic disease and isolated tumor cells as a predictor for additional breast cancer axillary metastatic burden. Ann Surg Oncol. 2010 Oct.


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