ABSTRACT

A 26-year-old female presented with back pain and palpable swelling near the left scapula. MRI findings suggested a benign cystic chest wall lesion. The cyst was not associated with any joint or neural structures. Total surgical excision was performed. Since the inner surface of the cystic lesion was found to be covered by synovial membrane in the histopathological evaluation, a diagnosis of "synovial cyst" was made. All symptoms of the patient were improved just after the surgical excision. No sign of recurrence was observed during the 2-year follow-up. In this report, surgical treatment of a "synovial cyst" case, which is rarely seen in the chest wall location, is presented.