Minimally invasive techniques have been widely used routinely and reliably in the treatment of pilonidal sinus. In some of these methods, the cavity of sinus remains in the patient; this condition caused us to question the necessity of pathological examination. Except for prolonged duration of disease, elderly age, macroscopic suspicion, and recurrence; We think that routine pathological examination of the pilonidal sinus is unnecessary.

Pilonidal sinus is a benign disease. In the histopathological examination of pilonidal sinus specimens, malignancy can be detected rarely. Minimally invasive techniques have been widely used routinely and reliably in the treatment of pilonidal sinus. In some of these methods, the cavity of sinus remains in the patient; this condition caused us to question the necessity of pathological examination. The investigators aimed to discuss the pathological findings of patients who were operated for pilonidal sinus in our clinic in light of the literature. The fact that the rate of malignancy in the literature does not show parallelism with minimally invasive procedures that pathology samples are not taken and whose applications are increasing supports this prediction. Except for prolonged duration of disease, elderly age, macroscopic suspicion, and recurrence; the investigators think that routine pathological examination of the pilonidal sinus is unnecessary.

Inclusion Criteria:

• sacrococcygeal pilonidal sinus

Exclusion Criteria:

• non-sacrococcygeal pilonidal sinus
• minimally invasive treatment without histopathological examination

Patients who were operated on for pilonidal sinus between January 2016 and March 2020 at our hospital.