title: Imaging features of glomus tumors.
abstract: OBJECTIVE
  To describe the imaging findings with pathologic correlation and clinical presentation of glomus tumors.
  
  
  METHODS
  We retrospectively searched the surgical pathology database from January 1, 1997, to April 30, 2010, for cases of pathologically proven glomus tumor. Patients who had imaging results available for review were included in the study.
  
  
  RESULTS
  Glomus tumors presented with a prolonged history of focal and often debilitating pain, with a mean duration of symptoms of 7.2 years. Mean tumor size was 13 mm. The upper extremity was involved in 12/25 (48%) of the tumors, the lower extremity in 12/25 (48%), and one case (4%) was within the trachea. Lesions appeared well circumscribed on ultrasonography, with marked vascularity on color Doppler evaluation. Magnetic resonance imaging (MRI) with a marker placed in the region of point tenderness was the best method for identifying small glomus tumors. These tumors had a high T2 signal and uniform enhancement after gadolinium administration.
  
  
  CONCLUSIONS
  The diagnosis of glomus tumor is suggested by imaging features of a small circumscribed mass at the site of point tenderness that show marked vascularity on Doppler evaluation or diffuse contrast medium enhancement on MRI, or both. Early tumor recognition allows surgical resection that completely resolves the crippling, chronic pain of these lesions.
authors.affiliation: Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA. glazebrook.katrina@mayo.edu
authors.forename: Katrina N
authors.initials: KN
authors.lastname: Glazebrook
authors.forename: Bryan J
authors.initials: BJ
authors.lastname: Laundre
authors.forename: Terry K
authors.initials: TK
authors.lastname: Schiefer
authors.forename: Carrie Y
authors.initials: CY
authors.lastname: Inwards
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D005260:Female; D005918:Glomus Tumor / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012878:Skin Neoplasms / Q000175:diagnosis*; D014463:Ultrasonography / Q000379:methods*; D055815:Young Adult