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Evidence-based criteria for adequacy in thyroid fine-needle aspiration.

AbstractTo determine whether some thyroid fine-needle aspirates classified as nondiagnostic correlate with benign thyroid nodules and can be distinguished from other nondiagnostic aspirates, I reviewed (from a total of 1,581) 80 nondiagnostic cases, all of which were hypocellular and lacked colloid, and correlated the cytologic findings with the results of pathologic follow-up. Of the 80, 16 had carcinoma at follow-up and 64 were benign. The cellularity of the carcinoma cases ranged from 0 to 100 cells (mean, 20 cells), but every case with epithelial cells had Hürthle cell change or atypia suggestive of papillary carcinoma. The cellularity of the 64 benign cases ranged from 0 to 120 cells (mean, 40 cells), 17 of which had Hürthle cell change. There were 25 cases with at least 10 benign-appearing follicular cells without atypia or Hürthle cell change; all 25 cases were associated with benign follow-up. While these results need to be confirmed by others, the evidence suggests that a proportion of thyroid aspirates that do not meet traditional criteria for adequacy still may be associated strongly with a benign thyroid nodule and can be distinguished from other nondiagnostic aspirates.
AuthorsAndrew A Renshaw (Affiliation: Department of Pathology, Baptist Hospital of Miami, FL 33176, USA.)
JournalAmerican journal of clinical pathology (Am J Clin Pathol) Vol. 118 Issue 4 Pg. 518-21 (Oct 2002) ISSN: 0002-9173 United States
PMID12375637 (Publication Type: Journal Article)
Topics
  • Adenocarcinoma (pathology)
  • Adenoma, Oxyphilic (pathology)
  • Biopsy, Needle
  • Diagnosis, Differential
  • Evidence-Based Medicine (methods)
  • Humans
  • Specimen Handling (methods)
  • Thyroid Neoplasms (pathology)
  • Thyroid Nodule (pathology)