Page created on April 24, 2019. Last updated on April 26, 2020 at 18:32
This slide is no longer part of the curriculum as of spring 2020, so you shouldn’t have to learn it.
The top of the slide shows normal breast tissue. The tumor is obvious.
The tumor cells form clusters that are “floating in a sea of mucin”. These tumor cells have lost their orientation and therefore secrete mucin outwards instead of inwards (into an acinus)
Diagnosis: Mucinous carcinoma
- Usually older women
- Probably same as for other breast cancers
Mucinous carcinoma is a rare type of breast carcinoma, accounting for less than 3% of cases. It has a better prognosis than invasive ductal carcinoma.