39-year-old female, not visibly demarcable area in the breast. Mammography negative, in fine needle biopsy suspected malignancy.
- Fatty and plenty of fibrous connective tissue with only few individual maintained acini
- Tumour growth predominantly in thin solid strands, mostly distributed in single layers or single cells
- The tumour cells are rather small and contain little cytoplasm.
- In some places concentric growth around remnant duct or acini can be seen.