title: MRI appearances of ovarian serous borderline tumor: pathological correlation.
abstract: OBJECTIVE
  To investigate the spectrum of MRI appearances of ovarian serous borderline tumor (SBT).
  
  
  METHODS
  Following ethics approval, 31 patients with 51 histologically proven ovarian SBTs underwent preoperative MRI. Images were evaluated, by two observers for the location, shape, size, internal architecture, signal intensity, and extent or stage of the tumors. The MRI findings were correlated with pathological findings.
  
  
  RESULTS
  Twenty of 31 patients (65%) demonstrated bilateral ovarian SBTs on MRI. Three MRI morphological patterns of ovarian SBT were identified: (i) Mainly cystic mass with multiple intracystic papillary projections from the wall and septations was observed in 24 (47%) tumors. (ii) Solid mass with hierarchical branching papillary and fibrous stalk architecture was observed in 8 (16%) tumors. The branching papillary projections were hyperintensity on T2WI, intermediate intense on DWI, and enhanced intensely after the administration of Gd-DTPA. The internal branching fibrous stalks were hypointensity on T2WI and enhanced slightly. (iii) Mixed cystic-solid mass was observed in 19 (37%) tumors. The cystic and solid components had the architecture and signal intensity similar to those of cystic and solid SBTs. Papillary projections were the common architecture of all three types of tumors.
  
  
  CONCLUSIONS
  On MRI, the ovarian SBT has some morphological distinguishing features. The solid papillary architecture with internal branching fibrous stalk is a somewhat more characteristic MRI appearance.
authors.affiliation: Department of Radiology, Jinshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.
authors.forename: Shu Hui
authors.initials: SH
authors.lastname: Zhao
authors.forename: Jin Wei
authors.initials: JW
authors.lastname: Qiang
authors.forename: Guo Fu
authors.initials: GF
authors.lastname: Zhang
authors.forename: Orest B
authors.initials: OB
authors.lastname: Boyko
authors.forename: Shi Jia
authors.initials: SJ
authors.lastname: Wang
authors.forename: Song Qi
authors.initials: SQ
authors.lastname: Cai
authors.forename: Li
authors.initials: L
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000077216:Carcinoma, Ovarian Epithelial; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D009375:Neoplasms, Glandular and Epithelial / Q000473:pathology*; D015588:Observer Variation; D010051:Ovarian Neoplasms / Q000473:pathology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013223:Statistics as Topic; D055815:Young Adult
keywords: MRI; borderline; ovary; serous