FNAC: Poorly to moderately cellular smears with large, solid, cohesive sheets of epithelial cells with a low degree of overlapping. Clean, hemorragic background. At higher magnification, some cellular clusters have a normal benign aspect but others are composed of cells with irregular pleomorphic nuclei. Presence of some drying artefacts. The FNAC was reported in category C4.

Triple assessment:

1. Clinic: palpation suspicious.
2. Mammography: suspicious.
3. Ultrasound: suspicious.
4. FNAC : representative, borderline adequate, presence of cells suspicious for malignancy, category C4.

Surgery and histology report: Presence of palpable mass vanishing after gross serial section. The denser area is sampled for frozen section diagnosis. A diagnosis of sclerosing adenosis with abnormal epithelial proliferation (LCIS?) is suggested. Definitive sections confirms this diagnosis.

Further treatment: Follow-up alone.