Surgical Deroofing and Trichloroacetic Acid Application: A Novel Treatment for Digital Mucous Cysts.

Background: Digital mucous cysts (DMCs) are benign cysts located in digital interphalangeal joints or the proximal nail fold. Despite various treatments, standardized guidelines are lacking, and recurrence rates remain high.

Objective: This study evaluates the efficacy and safety of a novel treatment combining surgical deroofing with trichloroacetic acid application.

Materials and methods: This study was conducted on 27 patients with DMCs treated from 2019 to 2022. Clinical features and therapeutic responses were documented with photographic records at the initial presentation and follow-ups. Histopathological examinations confirmed diagnoses and classified histopathological types.

Results: Among 27 lesions, 20 were within the proximal nail fold, 7 were beneath the proximal nail fold; 26 were ganglionic, and 1 was myxomatous. Four patients required multiple treatments within 6 months due to recurrences. Long-term follow-up showed clinical improvement in all patients: 17 achieved complete remission, and 8 showed partial improvement. The treatment was effective regardless of cyst type, with minimal complications and mild postoperative pain resolving within days.

Conclusion: The combination of surgical deroofing and trichloroacetic acid application minimizes complications and enhances efficacy. It allows for repetitive treatments in case of recurrence, making it a viable option for managing persistent DMCs, with favorable outcomes and minimal complications.