Perforator flaps after excision of large epidermal cysts in the buttocks

Sang Wha Kim, Seong Hyeok Yang, Jeong Tae Kim, Youn Hwan Kim

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Background: Epidermal cysts are commonly occurring masses usually less than 5 cm in diameter, but in predisposed patients, epidermal cysts can grow relatively large due to chronic infection. Methods: From June 2002 to July 2010, 17 patients received 19 regional perforator-based island flaps to cover defects due to the excision of large epidermal cysts (diameter >5 cm) in the buttocks. Eight patients had diabetes, and seven had rheumatoid arthritis. The pedicles were not fully isolated to prevent spasms or twisting. Results: All the flaps survived completely, except for one case with partial necrosis of the flap, which necessitated another perforator-based island flap for coverage. There were two cases of wound dehiscence, which were re-closed after meticulous debridement. There were no recurrences of the masses during follow-up periods of 8.1 months (range, 6-12 months). Conclusions: In patients with large epidermal cysts and underlying medical disorders, regional perforator-based island flaps can be the solution to coverage of the defects after excision.

Original languageEnglish
Pages (from-to)140-147
Number of pages8
JournalArchives of Plastic Surgery
Issue number2
StatePublished - 2014


  • Epidermal cyst
  • Perforator flap
  • Surgical flaps

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