Pyoderma gangrenosum as first clinical manifestation of gastric adenocarcinoma.

Pyoderma gangrenosum (PG) is a neutrophilic dermatosis of unknown etiology characterized by typical skin ulcers. It may be related to systemic disorders but its association with solid tumors is very unusual. In this setting, we describe a patient in whom PG was the first and isolated manifestation of advanced gastric adenocarcinoma.