|
KMID : 0363220070450040369
|
|
Korean Journal of Dermatology
2007 Volume.45 No. 4 p.369 ~ p.372
|
|
|
A Case of Melanoacanthoma on the External Auditory Canal
|
|
Kim Chi-Yeon
Park Sang-Young
Oh Chee-Won
Ahn Seong-Ki
|
|
|
Abstract
|
|
|
|
Melanoacanthoma, a rare benign variant of seborrheic keratosis, was first introduced by Mishima and Pinkus in 1960. It is a slow-growing, painless, pigmented plaque with a verrucous surface and a diameter ranging from a few millimeters to 10 cm. It tends to develop during middle-age with an equal sex incidence, and the lesion usually presents on the head, trunk, and especially the lip. It also has a histopathologic finding of mixed neoplasm composed of melanocytes scattered throughout keratinocytic lobules, and is characterized by hyperkeratosis, parakeratosis, acanthosis, papillomatosis and pseudo-horn cysts in the epidermis. We report a case of melanoacanthoma occurring in a 52-year-old female, who presented with an easily bleeding mass on her right external auditory canal, an extremely uncommon site.
|
|
|
KEYWORD
|
|
|
External Auditory Canal, Melanoacanthoma, Seborrheic keratosis
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|
|