Juvenile aponeurotic fibroma of the hand.

Juvenile aponeurotic fibroma is a rare benign tumor found primarily in the extremities of children and young adults. Clinically, it presents as a painless, mobile solitary mass in the hand. It may represent the cartilage analog of fibromatosis. Since it has a distinct tendency toward local recurrence, wide excision without sacrifice of function is the indicated treatment. Two cases are presented illustrating the diagnostic features and treatment of this disease process.