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Reticulated acanthoma with sebaceous differentiation.
Kazuyoshi Fukai1, Junko Sowa, Masamitsu Ishii
1Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan. fukai@msic.med.osaka-cu.ac.jp
The American Journal of Dermatopathology
|April 21, 2006
Summary
This report details the first documented case of reticulated acanthoma with sebaceous differentiation (RASD). Immunohistochemical analysis suggests this specific case is not linked to Muir-Torre syndrome.
Area of Science:
- Dermatopathology
- Oncology
Background:
- Reticulated acanthoma with sebaceous differentiation (RASD) is a rare skin condition.
- Sebaceous differentiation in skin tumors can sometimes indicate Muir-Torre syndrome.
Observation:
- A 55-year-old woman presented with a 15-year history of a pruritic patch on her upper back with yellow discharge.
- Histological examination confirmed the diagnosis of RASD.
- Immunohistochemical staining for MSH-2 and MLH-1 was positive in sebaceous cells and dermal cells.
Findings:
- The presented case is the first reported instance of RASD.
- Positive MSH-2 and MLH-1 staining suggests the absence of Muir-Torre syndrome in this patient.
Implications:
- This case expands the understanding of RASD presentation and histology.
- Differentiating RASD from other sebaceous neoplasms is crucial for accurate diagnosis and management.
- Further research may clarify the specific etiology and potential associations of RASD.