DERMATOPATHOLOGY CASES: Self-Assessment Cases: Editor - Dr Sampurna Roy MD

Digital Images of interesting cases that will include the full spectrum of Dermatopathology, presented in the form of quiz.

The answer of the cases include related links and recent abstracts of articles.

Sunday, November 27, 2011

Answer of Dermatopathology Case 105

Immunostaining, staining reveals that the epithelial cells are positive for cytokeratin , estrogen receptor (ER) and progesterone receptor (PR).

PR (Progesterone Receptor):Positive

ER (Estrogen Receptor): Positive

Cytokeratin: Positive


Cutaneous ciliated cyst of the right lower leg. Pathol Int. 1999 Apr;49(4):354-7.
A 23-year-old Japanese woman with a cutaneous ciliated cyst on her right lower leg is reported. A subcutaneous cyst, measuring 2.5 cm in diameter with papillary projections into the lumen, was lined with ciliated cuboidal to columnar epithelia with partial stratification, histologically. These lining cells did not produce mucin. Immunohistochemically, the ciliated lining cells of the cyst were diffusely positive to epithelial membrane antigen and cytokeratin. In addition, positive immunoreaction with anti-desmin monoclonal antibody was observed in the body of the cilia. Less than 10% of the epithelial cells revealed positive immunoreaction to S-100 protein and estrogen receptor.