Body Mass Index and Recurrence of Pilonidal Sinus Disease

Introduction & Pilonidal sinus disease is common, and essential treatment of this disease is surgery. One of main post operative problems is the recurrence of disease. But in spite of its high prevalence, and recurrence disease studies about: prevalence, incidence, causes of recurrence and etc, is scarce. In this study we study relationship between Body Mass Index (BMI) and the recurrence of pilonidal sinus disease. Study is an analytic type (case-control) and was performed in patients who refer to two university hospitals: Loghman Hakim and Emam Hossein, in the time interval 1382-1385. Two hundred and thirty-three accessible patients who were operated for pilonidal sinus disease (close and open surgery) divided in two groups patients: these with recurrence were considered as case group and patient without recurrence determined as control group. Patients with BMI < 25 were considered to have normal weight and patients with BMI ≥ 25, were considered obese, and the mean follow-up period was 21 months (range 6-36). Results were analyzed with SPSS software and chi-Square test. Most of patients were 20-29 years old, and men were affected four times more commonly than women. %33 of patients were affected by acne in their life and %20.45 of them had positive family history of pilonidal sinus. Correlation between open and close technique of surgery, was significant between case and control groups. Therefore, open surgery had reduced recurrence rate. (P=0.02).The mean BMI of patients with and without recurrence was 25.5±2.3 and 24.2±3.1, respectively that difference between two groups was not significant.In this study 22 patients had recurrenced (0.95%). 8 patients with normal BMI group (137 patients) were recurrenced (0.5%) and in obese group (96 patients) 14 patients had recurrence (0.14%). Obesity and recurrence of pilonidal disease statistically was significant. Obesity is an important factor in the recurrence of pilonidal sinus disease.