A Rare Case of Squamous Cell Carcinoma in Chronic Sacrococcygeal Pilonidal Disease

Squamous cell carcinoma (SCC) arising in a chronic pilonidal sinus is a rare but serious complication, with an estimated incidence of 0.1%. This case report presents a 25 - year - old male diagnosed with well - differentiated SCC in the sacrococcygeal region, highlighting the clinical presentation, diagnostic challenges, and surgical management. The case underscores the importance of histopathological examination of long - standing pilonidal sinus lesions to detect malignancy early.