Abstract

To excise external angular dermoid cyst (EADC) by transconjunctival approach and compare the surgical outcomes with the standard transcutaneous approach. This was a prospective, pilot, interventional, comparative study. Patients with EADC with no or minimal fixity to the underlying bone on palpation and limited to eyelid were recruited. Patients were randomized into 2 groups; group 1 included patients with transcutaneous approach, and group 2 included patients with transconjunctival approach. The parameters assessed were intraoperative complications, duration and ease of surgery, postoperative complications, and overall satisfaction. Six children with a painless, round lesion in outer aspect of eyelid were recruited in each group. None of the patients had any intraoperative or postoperative complications, including dysfunction of eyelid contour and fold, persistence or late occurrence of lateral eyelid droop, excessive or recurrence of swelling, and ocular surface problems, especially in group 2, but a skin scar though hidden was inevitable in group 1. The duration of surgery was comparable with better ease of surgery in group 1 and a gradual learning curve in group 2. The overall satisfaction scores were significantly better in group 2 (p<0.0001). In group 1, parents of 5 of 6 patients had to be reassured that the skin scar will fade with time. Transconjunctival excision of EADC is a viable and novel approach in patients with mobile cyst that is limited to the eyelid with no obvious bony fossa. Main limitations of the approach are that it requires surgical expertize, provides less surgical space, and has a gradual learning curve.

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