This 5-year-old girl was referred to an orthopedic surgeon because of pain in her left wrist for a period of weeks. Three months previously, she had hurt the dorsum of her left hand and wrist in a fall. The lateral aspect of the dorsum of the hand was swollen. A roentgenogram of the left hand was obtained (Fig 1 and 2). A chest roentgenogram was normal. Skin tests for microbacterial and fungal causes were negative. A complete blood cell count was normal. The carpal lesion underwent biopsy and was partially resected.
Denouement and Discussion
Juvenile Aponeurotic Fibroma
Microscopie examination of sections of the lesion (Fig 3 and 4) showed degenerating focally hyalinized fibrocartilagenous tissue and fragments of proliferating fibroblastic cells arranged in nodules, palisading or intertwining tangles of eosinophilic spindle-shaped cells. Nuclei were oval or spindle shaped, moderately hyperchromatic, and uniform in size. Several islands of cartilagenous metaplasia with focal calcification were present
Young LW, Lowell JW, Girdany BR. Radiological Case of the Month. Am J Dis Child. 1980;134(2):195-196. doi:10.1001/archpedi.1980.02130140069018