F-18 FDG imaging of an asymptomatic sacrococcygeal pilonidal sinus in a patient with malignant disease

Ak I.

CLINICAL NUCLEAR MEDICINE, cilt.32, sa.10, ss.822-824, 2007 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Yayın Türü: Makale / Editöre Mektup
  • Cilt numarası: 32 Konu: 10
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1097/rlu.0b013e318148ba35
  • Sayfa Sayıları: ss.822-824


This case illustrates a pitfall associated with F-18 FDG imaging. We present the images of a 57-year-old woman with non-Hodgkin's lymphoma that shows intense accumulation of F-18 FDG in a sacrocoecygeal pilonidal sinus that could indicate a lymphomatous involvement from a primary disease. MRI showed a well-defined sinus tract from skin to the sacrococcygeal region corresponding to the F-18 FDG uptake. She did not have any symptoms of a sacrococcygeal pilonidal sinus such as discharge, swelling or pain. There was no visible opening of the sinus tract on the skin. Pilonidal sinus is commonly a hair-containing sinus or abscess in the sacrococcygeal area. Hair acts as a foreign body causing an inflammatory reaction.