Eckert F, Wolff H, Ring J, Braun-Falco O
Dermatologische Klinik, Ludwig-Maximilians-Universität München.
Hautarzt. 1990 Jan;41(1):39-42.
A 84-year-old female patient suffering from atypical fibroxanthoma is presented. A diagnosis of malignant melanoma or a cutaneous metastasis from an unknown primary tumor was suspected. The final diagnosis was established by immunohistological studies showing a strongly positive reaction to vimentin and a negative reaction to S-100 protein and cytokeratin.