Animal Type Melanoma

Melanoma supposedly resembling equine melanotic disease
  • Guido Massi
  • Philip E. Leboit


Animal type melanoma is a rare form of malignant melanoma with heavily melanized epithelioid cells and a deep periappendageal growth pattern. This entity is supposed to be similar to the so called equine melanocytic disease, a long lasting indolent form of melanoma with multiple lesions, well described in grey horses. Animal type melanoma in humans has to be distinguished from deeply pigmented nevi such as epithelioid blue nevus, deep penetrating nevus and cellular blue nevus. Its relationship, if any, to the equine disease seem fanciful to us.


Sentinel Lymph Node Metastasis Melanocytic Nevus Blue Nevus Congenital Nevus Cytological Detail 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Guido Massi
    • 1
  • Philip E. Leboit
    • 2
  1. 1.Department of PathologyCatholic University Medical SchoolRomeItaly
  2. 2.University of CaliforniaSan FranciscoUSA

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