Calcifying Aponeurotic Fibroma of the Hand
A Case Report
Ralph S. DeSimone, MD; Christopher J. Zielinski, MD

Eighty cases of calcifying aponeurotic fibroma have been reported in the literature1 since this entity was first described, in 1953, by Keasbey2, who called it calcifying juvenil­e aponeurotic fibroma. We report our experience in treating this type of tumor in the hand of a child, and we review the terms that have been used to describe it in the literature.

Case Report

In 1995, a two-year-old girl with no history of any medical problems presented with a mass on the volar radial aspect of the right thumb at the level of the metacarpophalangeal joint and extending onto the thenar eminence. The family had just recently noticed the mass. We observed normal motion of all of the thumb joints, with normal active function of the extensor pollicis longus and the flexor pollicis longus. There was no triggering, and the patient appeared to use the hand normally. The mass was mobile and did not seem to be painful. Sensory testing could not be done because of the child’s age. Radiographs did not demonstrate any osseous involvement, but there was calcification in the soft-tissue mass.

At surgery, a flesh-colored lobulated mass measuring 1.7 by 1.0 by 0.9 cm was found (Fig. 1). The radial digital nerve of the thumb was closely adherent to the mass on its inferior surface. The mass was dissected out with use …

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