Korean J Dermatol.
2015 Mar;53(3):226-229.
A Case of Malignant Hidroacanthoma Simplex
- Affiliations
-
- 1Department of Dermatology, Chonbuk National University Medical School, Jeonju, Korea. dermayun@jbnu.ac.kr
Abstract
- Malignant transformation of hidroacanthoma simplex into in situ porocarcinoma, also known as hidroacanthoma simplex with invasive growth, is very rare. Malignant hidroacanthoma simplex generally arises in the elderly and occurs most frequently on the lower extremities and trunk. The gross appearance of the tumor tends to vary, and there are nodular lesions or keratotic plaques with or without erosion and/or ulceration. In some cases, it clinically resembles Bowen's disease or seborrheic keratosis. Histopathologically, the tumor appears similar to hidroacanthoma simplex, but the cells are atypical with hyperchromatic nuclei, and many are in mitosis. Here we report an extremely rare case of malignant hidroacanthoma simplex that occurred on the right knee of an 84-year-old Korean woman.
Keyword
- Full Text Links
-
- Actions
-
Cited
- CITED
-
- Close
- Share
-
- Similar articles
-
- A Case of Pigmented Malignant Hidroacanthoma Simplex
- A Case of Atypical Hidroacanthoma Simplex
- A Case of Hidroacanthoma Simplex
- Malignant Hidroacanthoma Simplex with Seborrheic Keratosis
- A Case of the Development of Porocarcinoma in situ from a Preexisting Hidroacanthoma Simplex: Immunohistochemical Staining to Highlight Malignant Transformation
