Keasbey LE. Juvenile aponeurotic fibroma (calcifying fibroma); a distinctive tumor arising in the palms and soles of young children. Cancer 6: 338, 1953.
Requena L. Kutzner H : “Calcifying Aponeurotic Fibroma,” in Cutaneous Soft Tissue Tumors, edited by H Kutzner, p 135, Lippincott Williams & Wilkins, Philadelphia, 2014.
Schonauer F. Avvedimento S. Molea G. Calcifying aponeurotic fibroma of the distal phalanx. J Plast Reconstr Aesthet Surg 66: e47, 2013.
Fetsch JF. Miettinen M. Calcifying aponeurotic fibroma: a clinicopathologic study of 22 cases arising in uncommon sites. Hum Pathol 29: 1504, 1998.
Corominas L. Sanpera I Jr, Sanpera-Iglesias J. et al: Calcifying aponeurotic fibroma in children: our experience and a literature review. J Pediatr Orthop B 26: 560, 2017.
Sferopoulos NK. Kotakidou R. Calcifying aponeurotic fibroma: a report of three cases. Acta Orthop Belg 67: 412, 2001.
Lafferty KA. Nelson EL. Demuth RJ. et al: Juvenile aponeurotic fibroma with disseminated fibrosarcoma. J Hand Surg Am 11: 737, 1986.
Enzinger FM. Weiss SW, eds. “Fibrous Tumors of Infancy and Childhood,” in Soft Tissue Tumors, 3rd Ed, p 256, Mosby, St. Louis, 1995.
Cho YH. Ahn K. Kang CH. et al: Calcifying aponeurotic fibroma of the dorsum of the foot: radiographic and magnetic resonance imaging findings in a four year-old boy. Iran J Radiol 12: e23911, 2015.
Kim OH. Kim YM. Calcifying aponeurotic fibroma: case report with radiographic and MR features. Korean J Radiol 15: 134, 2014.
Allen PW. Enzinger FM. Juvenile aponeurotic fibroma. Cancer 26: 857, 1970.
Ali S. Butt FA. Addison A. et al: Calcifying aponeurotic fibroma of the big toe with an unusual presentation. The Foot 12: 242, 2002.
Benichou M. Balmes P. Marty-Double CH. et al: Juvenile aponeurotic fibroma (Keasbey tumor) with metastatic course: apropos of a case [in French]. Ann Pediatr (Paris) 37: 181, 1990.
Yee DY. Mott RC. Nixon BP. Calcifying aponeurotic fibroma. J Foot Surg 30: 279, 1991.
Hocar O. Yacoubi H. Akhdari N. et al: Unusual presentation of a rare tumor of the dorsal surface of the foot. ISRN Dermatol 2011: 704549, 2011.
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.