21 March 2015
: Case report 
Is Histological Examination Necessary when Excising a Pilonidal Cyst?
Unusual clinical course, Mistake in diagnosis, Diagnostic / therapeutic accidents, Educational Purpose (only if useful for a systematic review or synthesis)
Styliani N. ParpoudiABEF, Dimitrios S. KyziridisBFG, Dimitrios Ch. PatridasG, Apostolos N. MakrantonakisG, Pavlos IosifidisG, Ioannis G. MantzorosEF, Konstantinos C. TsalisABEFDOI: 10.12659/AJCR.892843
Am J Case Rep 2015; 16:164-168
Abstract
BACKGROUND: Pilonidal disease is a common inflammatory condition mostly affecting young males. Malignant degeneration of a pilonidal cyst is rare, with incidence estimated at 0.1%. The most common type is squamous cell carcinoma and the treatment of choice remains en block resection of the lesion.
CASE REPORT: We present the case of a patient with locally advanced squamous cell carcinoma arising in a pilonidal cyst, due to misdiagnosis of the disease during his first treatment.
CONCLUSIONS: Detailed histological examination of all excised pilonidal cyst lesions is essential and any histological suspicion should prompt a wider excision.
Keywords: Carcinoma, Squamous Cell - therapy, delayed diagnosis, Pilonidal Sinus - surgery, Sacrococcygeal Region, Skin Neoplasms - therapy
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