Squamous cell carcinoma and pilonidal cyst disease.

: Il carcinoma a cellule squamose insorgente su malattia del seno pilonidale e una patologia abbastanza rara che sopraggiunge in presenza di malattia con decorso decennale. E caratterizzato da una crescita lenta ma da un’elevata invasivita locale. Gli autori riportano il caso di un paziente di 63 anni con storia pluridecennale di malattia del seno pilonidale con ascessualizzazioni ricorrenti trattato chirurgicamente con resezione ampia e ricostruzione mediante uso di lembi. A distanza di 30 mesi non sono state osservate complicanze o recidive locali. CASE REPORT: Authors describe the case of a squamous cell carcinoma developed on a chronic pilonidal cyst in a 63- years-old patient with a 43 years history of recurrent pilonidal sinus disease. RESULTS: The patient underwent incisional biopsy, staging with total body CT and, finally, radical surgery. After 30 months there were no evidence of recurrence. DISCUSSION: Pilonidal sinus disease is a common disease that affects especially male subjects, obese and with excess of body hair. The complications that arise most frequently are cellulitis, abscess formation and developments of recurrences. Malignant transformation appears rather rare and is reported in the literature with a percentage that goes from 0.02% to 0.1%. CONCLUSIONS: Authors recommend accurate inspection of the pilonidal area in all chronic and longstanding inflammatory lesions and possibly practice incisional biopsies to exclude malignant degeneration.