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.
41. Invasive ductal carcinoma
43. Seborrhoeic keratosis