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Institut für Pathologie - Klinikum Fürth  

Case #1






Clinical data: 43 year old female, 0.6 cm dark, blue-black elevated lesion on the left arm. Malignant melanoma?

Frozen section diagnosis: common blue nevus.

Pathology and comment: benign melanocytic tumor composed of spindle cells in the dermis with abundant melanin pigment.
DD: Melanomas mostly contain a less amount of pigment. The epidermis is normal, no atypical cells. No lymphotic reaction around the blue nevus. (s. Case?)

 
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