Table 1. Reporting categories for FNAC and for CB.

	Cytology reporting		Core biopsy reporting
C1	Unsatisfactory	B1	Unsatisfactory/normal tissue only
C2	Benign	B2	Benign
C3	Atypia probably benign	B3	Benign, but of uncertain malignant potential
C4	Suspicious of malignancy	B4	Suspicious of malignancy
C5	Malignant	B5	Malignant
			B5a Noninvasive cancer
			B5b Invasive cancer
			B5c Cancer of nonassessable invasiveness

CB=core biopsy; FNAC=fine-needle aspiration cytology.