1. Pilonidal sinus of axilla;AIRD, I.;Brit. med. J,1952
2. Scar tissue carcinoma;ARONS, M.S.; LYNCH, J.B.; LEWIS, S.R.; BLOCKER, T.G.;Ann. Surg,1965
3. Sacrococcygeal pilonidal cyst;BERKOWITZ, J.;Amer. J. Surg,1949
4. Pilonidal sinus. A new theory of origin;BREARLY, R.;Brit. J. Surg,1955
5. Squamous cell carcinoma arising in a pilonidal sinus;CLEVELAND, B.P.; GREEN, W.O.;Surgery,1964