title: Pilonidal sinus of the umbilicus.
abstract: Only 15 cases of pilonidal sinus of the umbilicus have so far been reported. A 16th case is described; it supports the theory of acquired origin of the disease. The case fulfilled the criterion for pilonidal sinus--the 36-year-old man had a hair in the infected umbilical cyst. The cyst and umbilicus were excised. The umbilicus was not reconstructed because of the danger of recurrence. It is recommended that a careful search be carried out for hair in all patients with an infected umbilicus.
mesh_terms: D000328:Adult; D005549:Foreign-Body Reaction / Q000473:pathology; D006097:Granulation Tissue / Q000473:pathology; D006197:Hair; D006801:Humans; D008297:Male; D009336:Necrosis; D010864:Pilonidal Sinus / Q000473:pathology* / Q000601:surgery; D014472:Umbilicus / Q000473:pathology; D014496:Urachal Cyst / Q000473:pathology* / Q000601:surgery