Soft Tissue Chondroma of the Finger with Multiple Miliary Calcifications and Scalloping : A Case Report

Abstract

Soft tissue chondroma is a rare benign soft part tumor. We describe a 47-year-old man, who presented with swelling of the proximal interphalangeal joint (PIP joint) of the right index finger. As blood examination revealed no abnormality, he was treated conservatively. However, the swelling increased, and was associated with pain and disturbance of excursion. There was calcification within the tumor, and a scalloping on the phalanx of the index finger, prompting us to suspect synovial osteochondromatosis or chondrosarcoma. The tumor was excised and found to have many miliary calcifications extending from the articular capsule of the PIP joint. Pathologically, we diagnosed it as soft tissue chondromatosis. There has been no recurrence after 21 weeks of follow-up.