Melanocytic Nevi - Balloon Cell Nevus

Balloon Cell Nevus is a benign melanocytic nevus which I occasionally encounter in both my The Woodlands dermatology and Conroe dermatology offices.  The clinical appearance of a Balloon Cell Nevus is identical to the common melanocytic nevus.  The histologic appearance is what defines a Balloon Cell Nevus, as the melanocytes appear like balloons.  In some Balloon Cell Nevi, the entire histology is composed of Balloon Cells whereas in others only a few cells exhibit this finding.  Balloon Cell Melanoma does exist and this is treated as a melanoma with wide surgical excision, but normal Balloon Cell Nevi do not require treatment.

Balloon Cell Nevus Histology (http://dermimages.med.jhmi.edu/images/balloon_cell_nevus_2_061101.jpg)

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