title: Omental vascular pedicle sign: multidetector CT finding useful for diagnosis of an omental mass.
abstract: OBJECTIVE
  To describe multidetector CT findings of "omental vascular pedicle" sign.
  
  
  METHODS
  "Omental vascular pedicle" sign was defined as dilated omental vein associated with a mass located in omentum and was observed in 7 patients (5 women, 2 men). Mean age was 45 years. CT examinations and patient records were retrospectively reviewed. CT images were obtained by 16-MDCT (n = 1) and 64-dual source MDCT (n = 6). Curved planar and volume rendered images were reconstructed from axial images. Diameter of omental vein and drainage site were recorded. Images were evaluated by 2 radiologists in consensus.
  
  
  RESULTS
  Pathologic diagnosis of patients with "omental vascular pedicle sign" was omental angiosarcoma (n = 1), endometrial adenocarcinoma (n = 2), ovarian serous adenocarcinoma (n = 2), mixed gonadal tumor (n = 1), malignant peripheral sheath tumor (n = 1). In 5 patients, omental vein drained into splenic vein and in 2 patients it drained into right gastroepiploic vein. Mean size of omental masses associated with omental vascular pedicle was 7.1 × 4.5 cm (range 15 × 11 cm to 2.7 × 1.6 cm). Mean diameter of omental vein was 3.1mm (range 6-1.5mm). Diameter of the omental vein increased with the increasing size of omental masses and Pearson's correlation coefficient was 0.99.
  
  
  CONCLUSIONS
  "Omental vascular pedicle sign" can be helpful to objectively diagnose omental masses in patients with primary and metastatic omental tumors.
authors.affiliation: Department of Radiology, Hacettepe University School of Medicine, Ankara 06100, Turkey. musturayk@yahoo.com
authors.forename: Musturay
authors.initials: M
authors.lastname: Karcaaltincaba
authors.forename: Gonca
authors.initials: G
authors.lastname: Eldem
authors.forename: Ilknur
authors.initials: I
authors.lastname: Ozdeniz
authors.forename: Deniz
authors.initials: D
authors.lastname: Akata
authors.forename: Mustafa
authors.initials: M
authors.lastname: Ozmen
authors.forename: Okan
authors.initials: O
authors.lastname: Akhan
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008875:Middle Aged; D009852:Omentum / Q000098:blood supply* / Q000000981:diagnostic imaging*; D010534:Peritoneal Neoplasms / Q000000981:diagnostic imaging*; D010690:Phlebography / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*; D055815:Young Adult