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A Desmoid Tumor Involving the Subscapularis Muscle

A Case Report

Ballatori, Sarah E., MS1; Hecht, Jonathan L., MD, PhD2; Lozano-Calderón, Santiago A., MD, PhD1,2

doi: 10.2106/JBJS.CC.18.00184
Case Reports

Case: A 31-year-old woman developed worsening pain and paresthesia in the neck, shoulder, and arm over a period of 6 years. Magnetic resonance imaging revealed a soft-tissue mass in the subscapular region, with likely involvement of the scapula and the subscapularis muscle. The mass was resected, and the final histologic diagnosis was desmoid-type fibromatosis.

Conclusion: Desmoid tumors with subscapularis muscle involvement are exceedingly rare. Although limited range of motion is the more common presentation for these tumors, this case demonstrates that desmoid tumors may present with primarily neurologic symptoms.

1Massachusetts General Hospital, Boston, Massachusetts

2Beth Israel Deaconess Medical Center, Boston, Massachusetts

E-mail address for S.E. Ballatori:

Investigation performed at Massachusetts General Hospital and Beth Israel Deaconess Medical Center, Boston, Massachusetts

Disclosure: The authors indicated that no external funding was received for any aspect of this work. The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (

Copyright © 2019 by The Journal of Bone and Joint Surgery, Incorporated
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