J Korean Orthop Assoc.  2013 Apr;48(2):104-110. 10.4055/jkoa.2013.48.2.104.

Epidermal Cyst in the Foot and Ankle

Affiliations
  • 1Department of Surgery of Foot and Ankle, Eulji General Hospital, Eulji University, Seoul, Korea. jins33@hanmail.net
  • 2KT Lee's Orthopedic Hospital, Seoul, Korea.

Abstract

PURPOSE
To document post-excision recurrence rates for epidermal cysts of the foot and ankle by location.
MATERIALS AND METHODS
The authors retrospectively reviewed epidermal cysts confirmed histologically by excisional biopsy in 37 patients (male 20, female 17) from 2004 to 2011. Cyst locations and sizes were analyzed and preoperative and postoperative pain levels were compared using a visual analogue scale (VAS). Rates of recurrence and patient satisfaction levels were also measured.
RESULTS
Epidermal cysts occurred most commonly on the 1st toe (15 cases, 40.6%), followed by the ankle (7 cases, 18.9%), 2nd toe (6 cases, 16.2%), 3rd toe (4 cases, 10.8%), 4th toe (1 case, 2.7%), 5th toe (2 cases, 5.4%), and heel (2 cases, 5.4%). Average cyst size in 35 cases was 15.5x15.0x7.9 mm. VAS reduced from 6.5 preoperatively to 1.0 postoperatively. Cysts recurred in 7 cases (18.9%); on the 1st toe in 5 and on the 2nd toe in 2. Thirty patients (81.0%) were very satisfied with treatment results, 2 patients (5.4%) were satisfied, and 5 (13.5%) were not satisfied. Recurrence occurred in 4 cases, and in one of these cases the cyst recurred after second excision.
CONCLUSION
The excision of epidermal cysts in the foot and ankle area was found to have an 18.9% recurrence rate. To achieve good results, the precise location of cysts should be determined by imaging study before excision, and cysts must be excised completely.

Keyword

foot; ankle; epidermal cyst; biopsy; recurrence

MeSH Terms

Animals
Ankle
Biopsy
Epidermal Cyst
Female
Foot
Heel
Humans
Pain, Postoperative
Patient Satisfaction
Recurrence
Retrospective Studies
Toes
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