Histology Course S XI 18 Department of Pathology, University of Zurich Histokurs

S XI 18 invasive lobular carcinoma HE further information (German) on HiPaKu
  ICD-10: C50.9; ICD-O: 8520/3

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.