title: Magnetic resonance imaging findings of angiosarcoma of the scalp.
abstract: OBJECTIVE
  The purpose of this study was to investigate the magnetic resonance (MR) imaging findings of angiosarcoma of the scalp retrospectively.
  
  
  METHODS
  Eight patients with angiosarcoma of the scalp were included in this study. All patients were examined with 1.5-T MR imaging units and commercially available head coils.
  
  
  RESULTS
  In all 8 patients, MR images revealed thickened scalp or tumors with prolonged T1 and T2 relaxation times. They were well enhanced. T2-weighted MR imaging with fat saturation and contrast-enhanced T1-weighted MR imaging with fat saturation clearly showed tumors invading the subcutaneous fat tissue and muscles. In 4 patients, the tumors were larger on MR images than on inspection.
  
  
  CONCLUSIONS
  Magnetic resonance imaging was useful in determining the extent of angiosarcoma of the scalp because it visualized the tumor invasion into surrounding structures that could not be seen on physical inspection.
authors.affiliation: Department of Radiology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoko, Japan. hisoda@hama-med.ac.jp
authors.forename: Haruo
authors.initials: H
authors.lastname: Isoda
authors.forename: Michiko
authors.initials: M
authors.lastname: Imai
authors.forename: Shoichi
authors.initials: S
authors.lastname: Inagawa
authors.forename: Katsutoshi
authors.initials: K
authors.lastname: Miura
authors.forename: Harumi
authors.initials: H
authors.lastname: Sakahara
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006258:Head and Neck Neoplasms / Q000175:diagnosis*; D006394:Hemangiosarcoma / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D015588:Observer Variation; D012189:Retrospective Studies; D012535:Scalp / Q000473:pathology*; D012878:Skin Neoplasms / Q000175:diagnosis*