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Eruptive Keratoacanthoma en Plaque Confirmed by Complete Spontaneous Regression: A Case Report and Review of the Literature

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Affiliated Author(s)
이혜원
Alternative Author(s)
Lee, Hye Won
Journal Title
대한피부과학회지
ISSN
0494-4739
Issued Date
2019
Keyword
DiagnosisDifferentialKeratoacanthomaNeoplasm regressionSpontaneous
Abstract
Here we present a case of an unusual variant of keratoacanthoma, eruptive keratoacanthoma en plaque, occurring on the upper lip of a 58-year-old man. The lesion was a flesh-colored nodular plaque measuring 1.5×1.0 cm that rapidly grew within 2 months. After two biopsies, the cutaneous lesion grew more rapidly for 1 month, covering the entire cutaneous surface of the upper lip and measuring 6.0×2.0 cm. Thereafter, it disappeared without any treatment within 3 months, resulting in mild scarring with a cobblestone-like surface similar to the stereotypical involuting course of ordinary keratoacanthoma. In addition to the clinical features, the present case displayed essential diagnostic features of eruptive keratoacanthoma by showing typical spontaneous involution not reported in previous reports. Furthermore, it also revealed histopathology suggestive of squamous cell carcinoma, at least focally in addition to that of keratoacanthoma, which may evoke the potential for a misdiagnosis of malignancy.
Department
Dept. of Pathology (병리학)
Publisher
School of Medicine (의과대학)
Citation
대한피부과학회지, Vol.57(9) : 544-547, 2019
Type
Article
URI
http://kumel.medlib.dsmc.or.kr/handle/2015.oak/42474
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Pathology (병리학)
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