Microcalcifications Detected as an Abnormality on Screening Mammography: Outcomes and Followup over a Five-Year Period

Table 2

Distribution of biopsy investigations conducted with final client outcome*.

Biopsy method performed^†	Final outcome				Total of each biopsy method; 𝑛=156  (% of all; biopsy methods)
	Benign; 𝑛 (% of each biopsy method)	Atypical; 𝑛 (% of each biopsy method)	In situ carcinoma; 𝑛 (% of each biopsy method)	Invasive carcinoma; 𝑛 (% of each biopsy method)
FNA	2 (28.6)	0 (0)	0 (0)	5 (71.4)	7 (4.5)
UCNB	0 (0)	0 (0)	0 (0)	8 (100)	8 (5.1)
VALCS	101 (76.5)	3 (2.3)	20 (15.1)	8 (6.1)	132 (84.6)
Open surgical biopsy	1 (11.1)	3 (33.3)	4 (44.4)	1 (11.1)	9 (5.8)

∗Outcome determined at assessment which may include results of FNA, UCNB, VALCS, or open surgical biopsy or surgical treatment pathology whichever is the latter.
^†Investigations conducted at assessment were not mutually exclusive and some clients had more than one biopsy type.