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©2012 Baishideng. All rights reserved.
Pigmented hidroacanthoma simplex: A diagnostic pitfall
Mitsuaki Ishida, Fumiyoshi Kojima, Machiko Hotta, Hidetoshi Okabe, Division of Diagnostic Pathology and Department of Clinical Laboratory Medicine, Shiga University of Medical Science, Otsu, Shiga 520-2192, Japan
Yasuhiro Iwai, Division of Diagnostic Pathology, Takatsuki Hospital, Takatsuki, Osaka 569-1192, Japan
Author contributions: Ishida M interpreted the data and wrote the manuscript; all authors contributed to analyzing the patient’s data.
Correspondence to: Mitsuaki Ishida, MD, PhD, Assistant Professor, Division of Diagnostic Pathology and Department of Clinical Laboratory Medicine, Shiga University of Medical Science, Tsukinowa-cho, Seta, Otsu, Shiga 520-2192, Japan. mitsuaki@belle.shiga-med.ac.jp
Telephone: +81-77-5482603 Fax: +81-77-5482407
Received: January 1, 2011
Revised: June 20, 2012
Accepted: July 26, 2012
Published online: August 2, 2012
Revised: June 20, 2012
Accepted: July 26, 2012
Published online: August 2, 2012
Abstract
Hidroacanthoma simplex (HAS) is a rare skin appendage tumor and is recognized as an intraepidermal variant of poroma. Pigmented HAS is an extremely rare variant with dendritic melanocytes and/or melanin pigment in the tumor cells and a few cases of pigmented HAS have been reported in the English literature. We herein report a case of pigmented HAS and discuss the clinicopathological features of pigmented HAS and the pitfall in the diagnosis of black lesions.
Keywords: Pigmented hidroacanthoma simplex, Seborrheic keratosis, Porocarcinoma, Skin appendage tumor, Clinicopathological features