Fig 5. Subgroup analyses of disease-free survival of patients with papillary thyroid carcinoma (PTC) according to tumor size category and different cutoff of dyscohesive cells.

(A) Results of disease-free survival of 402 patients with PTC between 1.0 cm and 2.0 cm. Patients were subdivided into three groups based on risk factors of dyscohesive cells ≥ 1% and psammoma body ≥ 4. p = 0.204 between 0 risk factors and 1 risk factor; p = 0.011 between 0 risk factors and 2 risk factors; p = 0.091 between 1 risk factor and 2 risk factors. (B) Results on disease-free survival of 110 patients with PTC ≥ 2.0 cm. Patients were subdivided into three groups based on risk factors of dyscohesive cells ≥ 20% and psammoma body ≥ 4. p = 0.081 between 0 risk factors and 1 risk factor; p = 0.010 between 0 risk factors and 2 risk factors; p = 0.345 between 1 risk factor and 2 risk factors.