Células epiteliales redondeadas y anguladas, con abundante citoplasma eosinófilo. HE, 20X.

Luis Fernando Cárdenas, Amy Parsons

Department of Pathology, Wake Forest University Baptist Medical Center, Winston-Salem, NC, USA

Omar Sangüeza

Department of Pathology, Wake Forest University Baptist Medical Center, Winston-Salem, NC, USA
Department of Dermatology, Wake Forest University Baptist Medical Center, Winston-Salem, NC, USA

Correspondencia: lcardena@wfubmc.edu

Histiocitoma epiteliode celular

Epithelioid cell histiocytoma.

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Resumen

El histiocitoma epiteliode celular es un tumor benigno que se considera una variante rara del dermatofibroma. Característicamente, se presenta como una lesión polipoide eritematosa, razón por la cual se confunde frecuentemente en su aspecto clínico con un granuloma piógeno. Un pequeño collar epidérmico y, en la dermis, células redondeadas con abundante citoplasma eosinófilo y núcleo vesicular con nucléolo eosinófilo, son claves en su aspecto histológico.

Palabras clave: variante rara del dermatofibroma, lesión polipoide eritematosa, células epitelioides.

Summary

Epithelioid cell histiocytoma is considered a benign entity and a rare variant of dermatofibroma. It often presents as a polypoid red nodule, and for this reason it is usually confused with a pyogenic granuloma in its clinical picture. An epidermal collarette is occasionally present and tumor cells are round with abundant eosinophilic cytoplasm and a vesicular nucleus with small eosinophilic nucleoli. All are key features for a correct histologic diagnosis.

Key words: rare variant of dermatofibroma, polipoid lesion, epithelioid cells.