Ductal Carcinoma in Situ of the Breast
Variant: Pure Micropapillary Ductal Carcinoma In Situ
Diagnostic Criteria
- Dilated ducts lined by stratified population of monotonous cells
- Small finger-like or club shaped protuberances with bulbous ends
- May form arches
- Cells must be the same from base to tips
- When pure it is frequently multifocreported cases
al and multicentric
- Based on small numbers of
- Clinical significance is not known
- Some surgeons consider this to be an indication for mastectomy
- Be certain that the pattern is pure before reporting as such
- Usually low grade but may be high grade
- No special significance if mixed with usual cribriform pattern
- Not related to invasive micropapillary carcinoma