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Long-term outcome after Bascom's pit-pick procedure for pilonidal sinus disease: A cohort study.
Camilla Mattesen Serup1,2, Kristina Johansen Svarre1,2, Charlotte Tiffanie Bendtz Kanstrup1,3
1Department of Surgery, Copenhagen University Hospital, North Zealand, Hillerød, Denmark.
Summary
Bascom's pit-pick procedure shows a 68% treatment success for simple pilonidal sinus over 10 years. Recurrence risk is higher for active smokers and those with multiple pits.
Area of Science:
- Colorectal Surgery
- Surgical Oncology
- Minimally Invasive Surgery
Background:
- Pilonidal sinus disease (PSD) is a common condition.
- Bascom's pit-pick procedure offers favorable short-term outcomes for PSD.
- Long-term efficacy data for this procedure remain limited.
Purpose of the Study:
- To evaluate the long-term outcomes of Bascom's pit-pick procedure for simple PSD.
- To assess risks of treatment failure, recurrence, and complications.
- To analyze patient-reported outcomes including pain and cosmetic satisfaction.
Main Methods:
- Retrospective review of medical records for patients undergoing the pit-pick procedure.
- Long-term follow-up data updated via online surveys and telephone interviews.
- Competing risk analysis to determine cumulative recurrence rates.
Main Results:
- Median follow-up was nearly 8 years for 158 patients.
- 10-year cumulative recurrence rate was 27%; overall treatment success was 68%.
- Active smoking and ≥3 primary pits significantly increased recurrence risk. Over 90% reported no complications or chronic pain.
Conclusions:
- Bascom's pit-pick procedure is an adequate long-term treatment for most patients with simple pilonidal sinus.
- Patient factors like smoking status and disease severity influence recurrence.
- High patient satisfaction with cosmetic outcomes and low complication rates were observed.

