Mucinous cystadenoma of the ovary is at the benign end of the spectrum of mucin containing epithelial ovarian tumours.
The estimated peak incidence is at around 30-50 years of age.
They comprise approximately 80% of mucinous ovarian tumours and 20-25% of all benign ovarian tumours.
The tumours secrete mucin which fills the locules.
Mucinous cystadenomas generally tend to be larger than serous cystadenomas at presentation 1. Bilaterality is rare (2-5%).
Typically seen as a large cystic adnexal mass with numerous septations. Some of the loculations may contain some internal echotexture due to increased mucin content.
Mucinous cystadenomas are seen usually as large multilocular cysts containing gelatinous material or fluid of various viscosity. Due to this reason, the loculi of the tumours often show variable signal intensities on both T1 and T2 sequences. This can sometimes give a “stained glass” appearance. They rarely appear as unilocular cysts.
Treatment and prognosis
A mucinous cystadenoma is benign with excellent prognosis. (c.f. borderline mucinous tumours of the ovary or mucinous cystadenocarcoma of the ovary). Nonetheless they are frequently surgically excised for histological confirmation of benignity, and due to mass effect of the large tumours.
- 1. Jung SE, Lee JM, Rha SE et-al. CT and MR imaging of ovarian tumors with emphasis on differential diagnosis. Radiographics. 22 (6): 1305-25. doi:10.1148/rg.226025033 - Pubmed citation
- 2. Mullen CJ, Burd D, Reuter KL. Magnetic resonance imaging of an ovarian mucinous cystadenoma immediately before and after rupture. Br J Radiol. 1997;70 (834): 654-5. Br J Radiol (abstract) - Pubmed citation
- 3. Imaoka I, Wada A, Kaji Y et-al. Developing an MR imaging strategy for diagnosis of ovarian masses. Radiographics. 26 (5): 1431-48. doi:10.1148/rg.265045206 - Pubmed citation
- 4. Tanaka YO, Nishida M, Kurosaki Y et-al. Differential diagnosis of gynaecological "stained glass" tumours on MRI. Br J Radiol. 1999;72 (856): 414-20. Br J Radiol (abstract) - Pubmed citation
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Mucinous cystadenoma of the ovary||✗|
|Mucinous cystadenoma of ovary||✗|
|Ovarian mucinous cystadenomas||✗|
|Mucinous cystadenomas of the ovary||✗|
|Mucinous cystadenomas of ovary||✗|