Synovial sarcoma in the buttocks: an exceptional location - case report according to SCARE guidelines

Pelvic pain is a frequent reason for consultation; the management is complex, given the differences in symptomatic and anatomical orientation. We present an exceptional case of intergluteal synovial sarcoma rarely described in the literature, with an incidence of about 1/1 000 000 and less than 10 cases of intergluteal location are published.

Through this publication, we present a very exceptional case of synovial sarcoma. It concerns a 44-year-old male followed for probable intergluteal lipoma for 3 months and admitted for intergluteal mass bleeding. The clinical examination revealed an intergluteal tumor mass, and the surgical resection was in favor of a synovial sarcoma.The objectives of this work are threefold: to enrich the poor literature with this new case; to underline the importance of multidisciplinary management; to recommend the obligation of anatomopathological evidence to make the diagnosis of lipoma in front of a soft tissue tumor.

Our case enriches the poor literature on intergluteal synovial sarcoma, where less than 10 similar reports are available. We hope through our presentation to highlight this exceptional etiology of gluteal tumor and to recall that there is no relationship between the name of this tumor and the synovium as an anatomical entity.