Abstract
Synovial sarcoma is a rare malignity of mesenchymal origin; the diagnostic approach usually begins by documenting a soft tissue tumor; however, it results in a challenging diagnosis when it is more profound, of small size, or primary from the bone.
The present report describes a patient who presented insidious onset hip pain attributed to rheumatoid arthritis, with a fatal outcome due to baseline disease and surgery complications.
The underestimation of hip pain, mainly when there is no palpable mass, may delay the diagnosis.
Keywords
arthritis, rheumatoid; sarcoma, synovial; soft tissue neoplasms