Table of Contents
Definition / general | Clinical features | Case reports | Microscopic (histologic) description | Microscopic (histologic) images | Positive stains | Negative stains | Differential diagnosis | Additional referencesCite this page: Ductal carcinoma, NOS - pleomorphic variant. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/breastmalignantductalNOSpleomorphic.html. Accessed July 14th, 2017.
Definition / general
- Part of WHO classification
- Variant of high grade ductal NOS with pleomorphic and bizarre tumor cells comprising 50% or more of tumor cells
Clinical features
- Aggressive behavior
Case reports
- 83 year old woman with pleomorphic tumor with predominantly micropapillary features (Pathol Int 2007;57:694)
Microscopic (histologic) description
- 50%+ of tumor has pleomorphic cell population (> 6X variation in nuclear size) (Histopathology 2000;36:505)
- Excludes tumors of lobular origin
- Adjacent DCIS or classic ductal carcinoma in 73%
- Usually brisk mitotic activity
Positive stains
- CAM 5.2, pan keratin, EMA
- p53 (2/3), S100 (1/3)
Differential diagnosis
Additional references






