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An Bras Dermatol. 2019 Dec 18. pii: S0365-0596(19)30162-X. doi: 10.1016/j.abd.2019.03.004. [Epub ahead of print]

Dermatoscopy of the Borst-Jadassohn phenomenon in hidroacanthoma simplex.

Author information

1
Department of Dermatology of the Hospital do Servidor Público Estadual (HSPE), São Paulo, SP, Brazil. Electronic address: brunocastro1990@hotmail.com.
2
Department of Dermatology of the Instituto de Assistência Médica ao Servido Público Estadual (IAMSPE), São Paulo, SP, Brazil.
3
Department of Dermatology of the Instituto de Assistência Médica ao Servido Público Estadual (IAMSPE), São Paulo, SP, Brazil; Preceptor the Dermatology Residency Program of Instituto de Assistência Médica ao Servido Público Estadual (IAMSPE), São Paulo, SP, Brazil.

Abstract

The Borst-Jadassohn phenomenon is a morphological finding that consists of the presence of well-defined nests of cells located in the spiny stratum of an acanthotic epidermis. One of the neoplasms where this phenomenon is found is hidroacanthoma simplex. This neoplasm is considered the intraepidermal form of the eccrine poroma. Despite its benign nature, malignant transformations are reported. The present article reports a case of hidroacanthoma simplex and discusses the dermoscopy of this phenomenon.

KEYWORDS:

Dermatology; Dermoscopy; Poroma

PMID:
31932162
DOI:
10.1016/j.abd.2019.03.004
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