Borderline mucinous cystadenoma (ovary)

Case contributed by Dr Alexandra Stanislavsky

Presentation

Incidental finding on renal ultrasound. Otherwise well, premenopausal.

Patient Data

Age: 40 years
Gender: Female
Ultrasound

There is a multiloculated, 17cm mass in the left adnexa with thin internal septations which demonstrate mild vascularity. There are no solid components or papillary projections.

A normal right ovary is noted.  The uterus is suboptimally seen, but appears to be normal.  

There is no ascites.

Case Discussion

This is a sonographically inconclusive lesion, based on IOTA simple rules criteria 2.  The presence of mild (IOTA color score 2) internal vascularity and the size of the multilocular mass put this outside the "likely benign" range, however none of the IOTA malignant features are present.  

Likely differential is between a cystadenoma or borderline epithelial cystic neoplasm, with mucinous favoured over serous based on the presence of internal septations.

Path-proven borderline mucinous cystadenoma.

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Case information

rID: 62459
Published: 18th Aug 2018
Last edited: 12th Nov 2018
System: Gynaecology
Inclusion in quiz mode: Included

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