Procedure: Excision biopsy
Tumor Size: 6 × 5 × 3.8 cm (greatest dimension: 6 cm)
Histologic Type: Malignant phyllodes tumor
Histologic Grade: 3
Stromal Cellularity: Moderate to Markedly increased
Stromal Atypia: Moderate
Mitotic Activity: Increased (consistent with malignant phyllodes tumor)
Stromal Overgrowth: Present
Tumor Borders: Infiltrative
Heterologous Sarcomatous Elements: Not identified
Necrosis: Not identified
Lymphovascular Invasion: Not identified
Perineural Invasion: Not identified
Margins: Positive for tumor
Regional Lymph Nodes: Not submitted.
Pathologic Stage (AJCC 8th Edition): pT2 pN not assigned
Rt. breast mass.
Fibrofatty tissue measured 9x6x4.8 cm. Serial sectioning revealed rubbery to firm greyish whitish mass measured 6x5x3.8 cm.
Rt. Breast mass, excision biopsy: