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August 16, 2010

Subungual Tumor in a 66-Year-Old Woman—Diagnosis

Author Affiliations
 

S. STONEMARYMDBAHRAMITSOONMD

Arch Dermatol. 2010;146(8):911-916. doi:10.1001/archdermatol.2010.174-b

Hematoxylin-eosin–stained sections (Figure 2and Figure 3) demonstrated a fibrous nodule lined by deep invaginations of matrical epithelium in juxtaposition to the underside of the nail plate. The stroma was populated by a proliferation of small spindle cells with slightly wavy, uniform nuclei. Pleomorphism, nuclear atypia, and mitotic figures were not identified. With the clinical and histologic features, the patient was diagnosed as having onychomatricoma.

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