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Table 3 The analysis for the false-negative cases

From: Causes of misdiagnoses by thyroid fine-needle aspiration cytology (FNAC): our experience and a systematic review

Specimen problem
 Diffuse fibrosis2
 Thyroid cancer in patients with multinodular goiter4
 Nonspecific factors2
Interpretation error
  1. PTMC Papillary thyroid microcarcinoma, FVPTC follicular variant of papillary thyroid carcinomas