Table 3 Comparison between the two groups of the radiographic parameters of the carotid body tumors

Maximum diameter (cm)

2.30 (2.10, 2.90)

4.10 (3.20, 5.33)

4.395

<0.001

Volume (cm³)

4.90 (4.40, 8.97)

28.22 (14.38, 40.45)

−4.114

<0.001

Horizontal distance from the upper margin to the papillae (cm)

−3.31 (− 3.95,−1.74)

−1.71 (− 2.54,−1.22)

−2.827

0.005

Horizontal distance from the upper margin to the mandibular angle (cm)

0.55 (− 0.41, 1.93)

1.79 (1.00, 2.50)

−2.573

0.010

Fully surrounded

Yes

0 (0.0)

49 (87.5)

0.000

No

11 (100.0)

7 (12.5)

Fuzzy boundary

Yes

1 (90.9)

7 (12.5)

1.000

No

10 (9.1)

49 (87.5)

Low-level echo

Yes

10 (90.9)

51 (91.1)

1.000

Deny

1 (9.1)

5 (8.9)

Ultrasound blood flow grade

Level 1

2 (18.2)

9 (16.1)

0.367

0.911

Level 2

4 (36.4)

18 (32.1)

Level 3

5 (45.4)

29 (51.8)