Repeat FNA Significantly Lowers Number of False Negative Results in Patients with Benign Nodular Thyroid Disease and Features of Chronic Thyroiditis

Table 3

Type of malignant neoplasms revealed in postoperative histopathological examination in the patients of BL-CT and BL-nCT groups.

Type of malignant neoplasm in histopathological examination	BL-CT group; Number/%	BL-nCT group; Number/%	𝑃
PTC	15/68.1	80/88.9	NS
FTC	2/9.1*	5/5.6	NS
MTC	1/4.5	4/4.4	NS
ML	3/13.6	—	𝑃<0.01
SN	1/4.5**	1/1.1***	NS
Total	22/100.0	90/100.0

BL-CT: benign lesions with features of chronic thyroiditis, BL-nCT: benign lesion without features of chronic thyroiditis, PTC: papillary carcinoma, MTC: medullary carcinoma, FTC: follicular carcinoma, ML: malignant lymphoma, SN: secondary neoplasm.
*1 oxyphilic type follicular carcinoma; **renal cell carcinoma; ***squamous cell cancer of unknown origin.