Onychomatricoma: report of three cases, including the first recognized in a colored man

A Tosti, B M Piraccini, O Calderoni, P A Fanti, N Cameli, E Varotti
European Journal of Dermatology: EJD 2000, 10 (8): 604-6
Onychomatricoma is an uncommon benign tumor of the nail matrix with typical clinical features. We report here 3 cases of onychomatricoma, including the first case in a black patient. In all three patients a presumptive diagnosis of onychomatricoma was made by clinical examination. The affected nails were thickened and showed a marked overcurvature of the nail plate. Frontal view of the nail revealed the presence of small woodworm-like cavities within the nail plate. In all cases the pathology showed multiple fibroepithelial projections that extended into the thickened nail plate. The tumor epithelium was identical to that of the normal nail matrix and keratinized without a granular layer.

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