A case of fibroma of tendon sheath

Fibroma of tendon sheath is a benign, soft tissue tumor that presents as a painless mass in the distal portion of an extremity. It is a slow-growing, dense, fibrous nodule which firmly attaches to the tendon sheath, and usually occurs in adults between the age of 20 and 50 years old. Histopathologically, it shows a well-demarcated nodule consisting of haphazardly-arranged, fibroblast-like spindle cells, which are embedded in a dense collagenous matrix. It is thought to be either a reactive process or a neoplasm, and the recurrence rate after excision is reported to be 24%. Herein, we present a typical case of fibroma of tendon sheath in a 39-year-old female, who presented with a firm nodule on her left 2nd finger. This was confirmed by histopathologic findings. The information described above should carefully be taken into consideration during differential diagnosis of soft tissue tumors of the hand.