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Radiological Case of the Month

Lionel W. Young, MD; James W. Lowell, MD; Bertram R. Girdany, MD
Am J Dis Child. 1980;134(2):195-196. doi:10.1001/archpedi.1980.02130140069018.
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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

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