Table 3.

Clinical characteristics of patients with occult malignancy (n = 6) diagnosed by FNAC

Case no.	Age (years)	Imaging study	FNAC finding	Additional biopsy method	Histology	Tumor size (cm)	Tumor stage
20†	77	Mammogram	Suspicious	Core	IDC	4.2	IV
96	49	Mammogram	Suspicious	Core	ILC	1.6	IA
111†	51	Mammogram	Malignant	N/A‡	IDC	0.9	IA
119	30	US	Malignant	Core	DCIS	1.3	0
121	43	Mammogram	Suspicious	Core	IDC	3.6	IIA
134	32	Mammogram, US	Suspicious	Open	IDC	1.7	IIIC

^†Personal history of ipsilateral breast cancer

^‡Patient had definitive surgical therapy with lumpectomy following FNAC

US, ultrasound; FNAC, fine needle aspiration cytology; IDC, invasive ductal carcinoma; ILC invasive lobular carcinoma; DCIS, ductal carcinoma in situ