Treatment of a Chronic Open Wound Related to Sacrococcygeal Pilonidal Cyst and Squamous Cell Carcinoma: A Case Report

Abstract

Pilonidal sinus disease is a cystic lesion or draining sinus tract involving the sacrococcygeal area. A long-standing sinus tract can lead to squamous cell carcinoma in the tract and overlying skin. We present the case of a 56-year-old female patient who had undergone pilonidal cyst excision whose postoperative pathologic report indicated squamous cell carcinoma. The sinus tract did not heal for 3 months, and the patient was then transferred to our clinic. Our team conducted a thorough resection of the cystic lesion and the overlying skin, followed by the relocation of two flaps to restore the skin and soft tissue defect. The patient recovered after a 1-month wound healing period. Postoperative fluid collection or discharge did not occur, and the patient achieved the ability to perform daily activities such as walking and eating meals in the sitting position. Adequate resection of cystic lesions is necessary when treating pilonidal sinus disease. A benign cyst can turn into a malignant lesion, and additional wide excision followed by tissue restoration is a therapeutic option for curative treatment.