Can concurrent core biopsy and fine needle aspiration biopsy improve the false negative rate of sonographically detectable breast lesions?

Table 4 Distribution of the cytological and pathological results from the 23 false-negative cases

Patient Nr.	U	FNAB	U/F	CNB	Final Pathology
1	S	M	SM	ADH	DCIS	*
2	S	S	SS	Papilloma	IDC
3	I	I	II	Fibrocystic change	DCIS
4	B	M	BM	Fibrocystic change	IDC	*
5	S	M	SM	ADH	Apocrine CA	*
6	I	M	IM	Fibroadipose tissue	IDC	*
7	M	M	MM	Lactating adenosis	IDC	*
8	I	I	II	Papilloma	DCIS
9	I	M	IM	Papilloma	IPC	*
10	I	I	II	Papilloma	IDC
11	S	M	SM	Atypical cell	IDC
12	S	M	SM	Fibrocystic change	IDC	*
13	S	M	SM	Sclerosing adenosis	IDC	*
14	S	M	SM	Chronic inflammation	IDC	*
15	M	I	MI	Fibrocystic change	IDC
16	S	M	SM	ADH	IDC	*
17	I	I	II	Papilloma	IDC
18	I	I	II	Papilloma	DCIS
19	I	M	IM	Fibrous mastopathy	DCIS	*
20	I	M	IM	No evidence of malignancy	Mucinous carcinoma	*
21	S	M	SM	ADH	DCIS
22	S	M	SM	Papillary lesion	Mucinous CA	*
23	I	I	II	Fibrocystic change	IDC

* Cases detected by fine needle aspiration biopsy
U: Ultrasound
U/F: Ultrasound/fine needle aspiration biopsy
B: Benign, I: Benign, but uncertain malignant potential, S: Suspicious of malignancy, M: Malignant, ADH: atypical ductal hyperplasia, DCIS: ductal carcinoma in situ, IDC: invasive ductal carcinoma, IPC: invasive papillary carcinoma