Adenocarcinoma of Sacrococcygeal Pilonidal Disease: A Report of a Rare Case.

A recurring abscess or draining sinus overlying the sacrococcygeal area is the hallmark of the chronic, well-known condition known as sacrococcygeal pilonidal disease. It is among the most difficult surgical challenges. Rarely, recurrent illness, persistent infection, and associated inflammation result in malignant transformation, most frequently in the form of squamous cell carcinoma (SCC). We report a similar case of an 84-year-old man who presented to our outpatient clinic and had a persistent, recurring sacrococcygeal pilonidal sinus for 28 years. He had already undergone several surgical excisions for the same and now developed an ulceroproliferative growth on his right gluteal cleft since his previous resection when he first appeared.