Ovarian borderline mucinous cystadenoma

Ovarian borderline mucinous cystadenomas are a subtype of ovarian mucinous tumours and, as the name stands, are intermediate between mucinous cystadenomas and mucinous cystadenocarcinomas.

They account for ~ 10-15% of all ovarian mucinous tumours.

They are microscopically characterized by cytologic atypia and epithelial stratification, but stromal invasion is absent. They can show identical gross features to those of mucinous cystadenomas.

They are at least two recognised sub types:

  • intestinal type - commonest by far 3
  • Mullerian (endocervical-like) type

They have a multilocular appearance at MR imaging and can be indistinguishable from a simple mucinous cystadenoma of the ovary. Loculi are often small, arranged back-to-back, and variable in number. Contrast-enhanced images are essential to distinguish septal wall thickness from back-to-back small cysts.

They are non-invasive tumours, with survival rates reported as high as 99% 2.​

Ultrasound - gynaecology
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Article information

rID: 15056
System: Gynaecology
Tag: cases
Synonyms or Alternate Spellings:
  • Ovarian borderline mucinous tumour
  • Mucinous borderline ovarian tumours
  • Borderline mucinous cystadenoma of ovary
  • Borderline mucinous cystadenoma of the ovary
  • Borderline mucinous ovarian tumours
  • Ovarian borderline mucinous tumours
  • Ovarian borderline mucinous tumor
  • Ovarian borderline mucinous tumors
  • Ovarian borderline mucinous cystadenomas

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