Consecutive Cases of Pyoderma Gangrenosum Following Dermatologic Surgery.

Pyoderma gangrenosum (PG) is a rare ulcerative skin disease commonly associated with pathergy and systemic comorbidities. We present the case of a patient who experienced two episodes of PG following consecutive dermatologic surgeries to the left hand. The initial PG ulcerations occurred simultaneously following Mohs surgery and a standard elliptical excision. Five months later, her PG recurred after Mohs surgery. Our patient denied a history of PG, however, further questioning elicited a medical history significant for Crohn's disease. Dermatologists and Mohs surgeons should consider the diagnosis when evaluating patients with poor postoperative wound healing. Unfortunately, a delay in diagnosis often occurs, as the presentation of postsurgical PG can mimic other common skin conditions. Awareness of PG prior to dermatologic surgery is critical to prevent further postoperative complications and unnecessary debridement.