title: MRI appearances of mucinous borderline ovarian tumors: pathological correlation.
abstract: OBJECTIVE
  The purpose of this study is to evaluate the MRI features of mucinous borderline ovarian tumors (MBOT).
  
  
  METHODS
  MRI morphology of 30 MBOT proven MBOT by surgery and pathology was retrospectively studied and correlated with the histopathological findings. On MRI, tumors were classified into three morphological categories: (i) unilocular cyst in five (17%) tumors. (ii) multilocular cyst in 23 (76%) tumors. (iii) solid mass in 2 (7%) tumors. MRI features of tumors were identified including the multilocularity (23/30, 77%), honeycomb loculi (15/30, 50%), signal discrepancy (different signal intensity on T1WI and T2WI) (19/30, 63%), thickened wall or septa (>3 mm) (16/30, 53%).
  
  
  RESULTS
  Intestinal type and endocervical type of MBOT, two distinctly histologic subtypes, were found in 20 (67%) and 10 (33%) tumors respectively. There were a higher prevalence of multilocularity (P = 0.026), honeycomb loculi (P = 0.025), and signal discrepancy (P = 0.024) in intestinal type than endocervical type of MBOT.
  
  
  CONCLUSIONS
  Typical MRI features of MBOT are large multilocular tumors with honeycomb loculi, heterogeneous signal intensity of the loculi, and thickened wall or septa.
authors.affiliation: Department of Radiology, Jinshan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.
authors.forename: Feng Hua
authors.initials: FH
authors.lastname: Ma
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: Xue Zhen
authors.initials: XZ
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Wang
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000473:pathology*; D000293:Adolescent; D000328:Adult; D000368:Aged; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000473:pathology*; D012189:Retrospective Studies
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA
keywords: borderline; magnetic resonance imaging; mucinous tumors; ovary