Observational study on the treatment of pilonidal cyst with Holmium laser. Single-centre retrospective study of medical data from patients' medical records

From the medical records of a series of patients treated for pilonidal cysts with Holmium laser:

1. Primary objective: to assess the rate of healing at 1 month after Holmium laser treatment (healing being defined as no dressing)

2. Secondary objectives: to assess the following:

   • Healing rate at last follow-up (1 month after surgery)
   • Recurrence rate at last follow-up (1 month after surgery)
   • Consumption of >1 level analgesics in the week and month following the procedure
   • Duration of nursing care

Inclusion Criteria:

• Patient aged 18 years or older, who has been informed of the research;
• Patient with a pilonidal cyst treated with Holmium Laser during a scheduled procedure.

Exclusion Criteria:

• Patient under legal protection, guardianship or curatorship;
• Patient who has indicated his opposition to the use of his data.
• Patient undergoing emergency surgery for an abscess

The patients participating in the study were operated on at the centre between AUGUST and NOVEMBER 2020. The study is based solely on a review of the medical records of these patients. No further evaluation is planned.