Calcifying Aponeurotic Fibroma of the Hallux A Case Report.

Calcifying aponeurotic fibroma is a rare benign fibrous tumor predominantly seen in children and adolescents younger than 20 years. This tumor is often treated with complete surgical excision, although the recurrence rate is approximately 50%. The distal upper and distal lower extremities are most commonly involved, with only three cases published to date involving pedal digits. We discuss a case of calcifying aponeurotic fibroma in a 25-year-old woman localized to the medial aspect of the distal hallux. Clinical, radiographic, and magnetic resonance imaging findings are described. After an incisional biopsy and histopathologic findings confirmed that the lesion was benign, a complete excision was performed, and diagnosis was established for calcifying aponeurotic fibroma. At 6 months, the patient had healed uneventfully, and no recurrence has been noted. Malignant transformation is rare but has been documented, warranting concern for clinicians and patients.