Display Settings:

Format

Send to:

Choose Destination
Surgery. 2007 Dec;142(6):837-44; discussion 844.e1-3. Epub 2007 Nov 5.

The incidence of cancer and rate of false-negative cytology in thyroid nodules greater than or equal to 4 cm in size.

Author information

  • 1Department of Surgery, University of Pittsburgh, Pa., USA.

Erratum in

  • Surgery. 2008 Feb;143(2):302.

Abstract

BACKGROUND:

High false-negative rates for fine needle aspiration biopsy (FNAB) of thyroid nodules greater than 3 cm have prompted recommendations for diagnostic lobectomy. We considered the presence of a greater than 4 cm nodule an independent indication for thyroidectomy regardless of FNAB results.

METHODS:

We reviewed clinical data from 223 patients with thyroid nodules greater than or equal to 4 cm operated on from July 2003 to November 2006. Unifocal micropapillary cancer was considered clinically insignificant.

RESULTS:

Clinically significant thyroid cancer was frequent, occurring in 57 of 223 patients (26%). Subgroup analysis showed that 43 of 223 patients (19.3%) had carcinoma within the mass and that 7 of 223 patients (3.1%) had significant carcinoma elsewhere in the resected thyroid. Multifocal micropapillary cancer was found in an additional 7 of 223 patients (3.1%). Preoperative FNAB was read incorrectly as benign in 9 of 71 patients with cancer (13%) (16% including multifocal micropapillary carcinoma). Benign FNAB results failed to identify 24 (34%) follicular lesions (including 7 cancers). In patients with preoperative FNAB results categorized as indeterminate lesions, 17 of 43 patients (40%) had carcinoma of the mass on final pathology.

CONCLUSIONS:

In thyroid nodules greater than or equal to 4 cm, the incidence of carcinoma is high with a high false-negative rate for preoperative benign cytology. Thyroid nodules greater than or equal to 4 cm should be considered for diagnostic lobectomy regardless of FNAB results.

Comment in

PMID:
18063065
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk