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Table 4 Comparisons of US classification between the Group A (n = 41) and Group B (n = 12)

From: Characteristics and natural course of hypoechoic thyroid lesions diagnosed as possible thyroid lymphomas by fine needle aspiration cytology

US class Group A Group B
2.5 1 1
3 9 8
3.5 9 3
4 21 0
  1. P < 0.01
  2. Classes 2.5 and 3.5 designate intermediate classes between 2 &3 and 3 & 4, respectively