Case ID	Block ID	Area ID	Tissue	Topography	Morphology	ER	PR	Ki67	HER2	Other IHC features
BR_121	A5	a	Normal	Surgical margin
BR_121	A1	a	NST	Tumor core	G2					CK7+
BR_121	A1	b	NST	Tumor core	G3					CK7+/-
BR_121	A3	a	NST	Tumor core	Mucinous stroma	90	100	12	2+
BR_121	A3	b	NST	Invasive front	Tubular	100	100	35	2+
BR_121	A4	a	NST	Invasive front	G3
BR_121	A3	c	DCIS (EIC+)	Adjacent to invasive front	High-grade	100	100	45	2+