A case of clear cell eccrine porocarcinoma.
Eccrine porocarcinoma (EP) is a rare malignant tumor arising from the intraepidermal eccrine duct. The tumor cells frequently contain glycogen, but prominent clear cell changes in EP are rarely reported. A 78-year-old woman presented with a slightly pruritic, erythematous, verrucous plaque on her left thigh. Histopathological examination revealed intraepidermal tumor cell nests composed of small basaloid cells and duct-like structures lined by periodic acid-Schiff (PAS)-positive cuticles. Besides the typical findings of EP, clear cell changes were predominantly observed in the tumor cell aggregations. Herein we report a case of the clear cell variant of EP rarely reported in previous literature.
Hong
Yeon Ju
YJ
Department of Dermatology, School of Medicine, Ewha Womans University, Seoul, Korea.
Oh
Ji Eun
JE
Choi
You Won
YW
Myung
Ki Bum
KB
Choi
Hae Young
HY