title: Radiologic manifestations of proximal-type epithelioid sarcoma of the soft tissues.
abstract: OBJECTIVE
  Our study was conducted to summarize the clinical and radiologic presentations and imaging features of proximal-type epithelioid sarcoma, a rare aggressive soft-tissue sarcoma, in 16 patients.
  
  
  CONCLUSIONS
  The chest wall, inguinal region, thigh, and perineum were the most common sites of the disease. Tumors exhibited multilobulated contours in 87.5% of the patients, which may be suggestive of this tumor type. Nodal involvement was identified on CT and MR imaging and confirmed pathologically in 62.5% of the patients. Although CT or MR findings are nonspecific, proximal-type epithelioid sarcoma shows a multinodular configuration and admixes with regional lymph node metastasis on imaging studies.
authors.affiliation: Division of Diagnostic Radiology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-Ku, Tokyo 104-0045, Japan.
authors.forename: Ukihide
authors.initials: U
authors.lastname: Tateishi
authors.forename: Tadashi
authors.initials: T
authors.lastname: Hasegawa
authors.forename: Masahiko
authors.initials: M
authors.lastname: Kusumoto
authors.forename: Rhouhei
authors.initials: R
authors.lastname: Yokoyama
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Moriyama
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012509:Sarcoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed