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Article
July 1950

LOS ANGELES DERMATOLOGICAL SOCIETY

Author Affiliations

President; Secretary March 8, 1949

Arch Derm Syphilol. 1950;62(1):171-174. doi:10.1001/archderm.1950.01530140175027

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Abstract

Porokeratosis of Mibelli. Presented by Dr. M. E. Obermayer and Dr. Ernest Fox (by invitation).

E. B., a white man aged 49, has had a nonpruritic, slowly growing lesion on the dorsum of his right hand since childhood. The occurrence of similar lesions in other members of his family was denied.

Examination reveals on the dorsum of the right hand a plaque 5 by 7 mm. which has a fine, sharp, keratotic, slightly elevated border and atrophic center.

The sections showed a small ridge in the epidermis, with a central notch. Pronounced hyperkeratosis, moderate granulosis and dyskeratosis were present. Slight vascular dilatation, thickening of the intima and fibrocytic cellular infiltration were observed in the papillary and subpapillary portions of the dermis.

Keratoderma Circumscriptum or Porokeratosis of Mibelli? Presented by Dr. M. E. Obermayer and Dr. Ernest Fox (by invitation).

In 1934 C. F., a white woman aged 76, had a

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