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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