title: Ovarian serous surface papillary borderline tumors form sea anemone-like masses.
abstract: OBJECTIVE
  To clarify the imaging characteristics of ovarian serous surface papillary borderline tumor (SSPBT), whose prognosis is far better than that of serous surface papillary adenocarcinoma (SSPC).
  
  
  METHODS
  We retrospectively reviewed the clinical and imaging findings of six cases (age range, 26-58 years; mean, 43 years) with SSPBT encountered at our institute from 1996 to 2008.
  
  
  RESULTS
  Serum levels of CA125 were elevated, and they were clinically suspected to have ovarian cancer. All masses were almost entirely solid and showed hyperintense papillary architecture with hypointense internal branching on T2-weighted MRI. Five patients had peritoneal implants, and two had lymph node enlargement, and all tumors were accompanied by ascites. In all cases, contralateral ovaries had cystic masses with mural nodules or mixed solid and cystic masses, of which the solid part was similar to the contralateral mass. No evidence of recurrence was noted at a follow-up of >12 months postoperatively.
  
  
  CONCLUSIONS
  SSPBT, which has more favorable prognosis than those of flank ovarian carcinoma, is characterized by a solid mass with papillary architecture and internal branching resembling a sea anemone on MR.
authors.affiliation: Department of Radiology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan. ytanaka@md.tsukuba.ac.jp
authors.forename: Yumiko Oishi
authors.initials: YO
authors.lastname: Tanaka
authors.forename: Satoshi
authors.initials: S
authors.lastname: Okada
authors.forename: Toyomi
authors.initials: T
authors.lastname: Satoh
authors.forename: Koji
authors.initials: K
authors.lastname: Matsumoto
authors.forename: Akinori
authors.initials: A
authors.lastname: Oki
authors.forename: Masato
authors.initials: M
authors.lastname: Nishida
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yoshikawa
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Saida
authors.forename: Manabu
authors.initials: M
authors.lastname: Minami
mesh_terms: D000231:Adenocarcinoma, Papillary / Q000473:pathology; D000328:Adult; D018394:CA-125 Antigen / Q000096:biosynthesis; D018283:Cystadenocarcinoma, Papillary / Q000473:pathology; D018284:Cystadenocarcinoma, Serous / Q000473:pathology; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008495:Medical Oncology / Q000379:methods; D008565:Membrane Proteins / Q000096:biosynthesis; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000473:pathology*; D010053:Ovary / Q000473:pathology*; D011379:Prognosis; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: D018394:CA-125 Antigen; C451759:MUC16 protein, human; D008565:Membrane Proteins