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Keratoacanthoma centrifugum marginatum: An unusual case.

Photodiagnosis Photodyn Ther

December 2021

Dermatology Hospital of Southern Medical University, No. 2 Lujing Road, Yuexiu District, Guangzhou City, Guangdong Province, China. Electronic address:

Keratoacanthoma centrifugum marginatum (KCM) of the skin is a rare variant of cutaneous keratoacantoma. KCM was first reported in 1962 andpresents with progressive peripheral expansion , no spontaneous clearing and a bank-shaped outer wall with concurrent central healing. Treatment options include topical and systemic therapies.

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Keratoacanthoma centrifugum marginatum (KCM) is a rare variant of keratoacantoma (KA). Although KCM shares histological and clinical features with KA, KCM has no tendency of spontaneous regression, and presents with progressive peripheral expansion with a bank-shaped outer wall and concurrent central healing. As such, early diagnosis and proper treatment of the patient are required.

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