Kevin L. Lu , Ryan Sieberg , Rita I. Freimanis , Heather I. Greenwood , Christopher J. Schwartz
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Alveolar soft part sarcoma of the pectoralis mimicking a breast mass: A case report
Alveolar soft part sarcoma (ASPS) is a potentially lethal soft tissue tumor with a xropensity for distant metastasis. We report an exceedingly rare case of an ASPS arising from the pectoralis major in a young woman, with initial clinical findings mimicking a breast mass. We present the radiographic, immunohistochemical, and molecular workup leading to the correct diagnosis, with review of the differential diagnosis.