Endoscopic pilonidal sinus treatment: a prospective multicentre trial

Background Pilonidal disease (PD) is a common inflammatory disease of the gluteal fold, resulting in recurrent acute/chronic infection at the level of the natal cleft. In this study, endoscopic pilonidal sinus treatment (EPSiT), a new endoscopic minimally invasive procedure, was evaluated for its effectiveness in treating PD. Methods Two hundred and fifty prospective patients with chronic PD were enrolled in a prospective multicentre study conducted at a secondary and tertiary colorectal surgery centre. The primary end-point of this study was wound healing, and the short-/long-term outcomes such as healing time, morbidity rate and recurrence rate were analysed. The secondary end-point of this study was quality of life (QoL). Results The complete wound healing rate was 94.8%, and the mean complete wound healing time was 26.7 ± 10.4 days. The incomplete healing rate (5.2%) was significantly related to the number of external openings (P = 0.01). There was no difference in the failure rate when EPSiT was performed as the first-line treatment for PD or when it was used after unsuccessful procedures (P = n.s.). Recurrence occurred in 12 cases (5%). The QoL significantly increased from preoperative levels 15 days after the EPSiT procedure (45.3 vs 7.9; P