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KMID : 0363220140520090658
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Korean Journal of Dermatology
2014 Volume.52 No. 9 p.658 ~ p.661
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A Case of Epithelioid Blue Nevus Developing on the Lower Lip
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Shu Dong-Woo
Lew Bark-Lynn
Sim Woo-Young
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Abstract
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Epithelioid blue nevus is a rare variant of blue nevus that has been recently described in patients with the Carney complex. However, sporadic cases have been reported even without the Carney complex. It typically presents as an asymptomatic, blue-gray, smooth-surfaced macule or papule occurring most often on the extremities and trunk. However, a few cases occurring on the mucosa have been reported. A 21-year-old man presented with a 0.4-cm sized solitary dark brownish or black papule on the lower lip. On histological examination, the major part of the specimen showed an infiltration of intensely pigmented epithelioid cells, the rest was composed of mildly pigmented spindle cells. There was no junctional activity, necrosis, or cellular atypia. These findings were consistent with epithelioid blue nevus. The patient did not exhibit any features associated with the Carney complex. No evidence of recurrence was observed during the follow-up period of 24 months. Herein, we report a rare case of epithelioid blue nevus arising on an unusual site.
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KEYWORD
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Epithelioid blue nevus, Lip
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