[Dermal chondroid melanoma].
This case describes the history of disease of a 53-year old man, who has been treated for a putative recurrent nailbed granuloma of the right big toe since 1996. In 2000 an enlarged inguinal lymph node was excised. The light microscopic examination showed a metastasis of a malignant melanoma. In 2003 we received a tumor of the right big toe for histopathological examination. The histological and immunohistochemical results proved a dermal chondroid melanoma. This extremely rare variant of malignant melanoma occurs particularly in subungual location and is possibly related to a previous trauma. We discuss the spectrum of differential diagnoses and the importance of immunohistochemistry.
Katenkamp
K
K
Institut für Pathologie, Klinikum der Friedrich-Schiller-Universität Jena. Kathrin.Katenkamp@med.uni-jena.de
Henke
R-P
RP
Katenkamp
D
D
D003937:Diagnosis, Differential; D006099:Granuloma / Q000473:pathology / Q000601:surgery; D006801:Humans; D008297:Male; D008545:Melanoma / Q000473:pathology*; D008875:Middle Aged; D009260:Nail Diseases / Q000473:pathology / Q000601:surgery; D009362:Neoplasm Metastasis; D012008:Recurrence; D012878:Skin Neoplasms / Q000473:pathology*