Diagnostic Accuracy of Fine Needle Aspiration in Thyroid Nodules Arising in Patients with Graves Disease

Jen Fan Hang, Mohammed T. Lilo, Justin A. Bishop, Syed Z. Ali

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: Cytopathologic interpretation in Graves disease (GD) is considered challenging due to significant cellular atypia. Study Design: We retrospectively identified 55 fine needle aspirations (FNAs) from 43 patients with GD that subsequently underwent thyroidectomy from 1995 to 2016. Results: There were 5 patients with papillary thyroid carcinoma (PTC) and 4 with follicular adenoma (FA). Of the 5 patients with PTC, FNA was interpreted as PTC in 3, atypia of undetermined significance (AUS) in 1, and adenomatoid nodule (AN) in 1 (with a 0.5-cm incidental microcarcinoma). Of the 4 patients with FA, FNA was interpreted as follicular neoplasm (FN) in 2, AUS in 1, and AN in 1. Of the 46 nonneoplastic nodules, FNA was interpreted as nondiagnostic in 2, benign in 26, AUS in 15, FN in 1, and suspicious for PTC in 2. None was diagnosed as malignant. The sensitivity, specificity, positive predictive value, and negative predictive value of PTC diagnosis in FNA were 60, 100, 100, and 96.2%, respectively. Conclusion: FNA is a useful tool for identifying neoplastic nodules arising in GD. However, cytologic atypia often leads to indeterminate diagnoses (18/46, 39.1%). Awareness of clinical information regarding prior treatment for GD may be helpful to avoid overinterpretation.

Original languageEnglish (US)
Pages (from-to)117-124
Number of pages8
JournalActa Cytologica
Volume61
Issue number2
DOIs
StatePublished - May 1 2017

Keywords

  • Cytopathology
  • Fine needle aspiration
  • Graves disease
  • Thyroid

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Histology

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