Table 2 The globe profile of HAV in 2,275 patients and the incidence of VTSS according to Michel’s classification of HAV.

From: The “Vessel through Strait” Sign is a Signature Radiological Sign for the Diagnosis of Left Hepatic Artery Variation

Type

Cases (n, %)

VTSS positive (n, %)

Description

Left Hepatic Artery Variation (n = 324, 14.2%)

II

193 (8.5%)

192(94.4%)

Replaced LHA from LGA

IV

50 (2.2%)

49 (98%)

Replaced RHA and LHA

V

58 (2.5%)

55 (94.8%)

Accessory LHA

VII

0 (0%)

0 (0%)

Accessory RHA and LHA

VIII

9 (0.4%)

9 (100%)

Replaced RHA and Accessory LHA

 

6 (0.3%)

6 (100%)

Replaced LHA and Accessory RHA

X

8 (0.4%)

8 (100%)

CHA from LGA

Normal Anatomy (n=1,566, 68.8%)

I

1,566 (68.8%)

34 (2.2%)

Normal

Right Hepatic Artery Variation and others (n = 385, 17.0%)

III

123 (5.4%)

2 (1.6%)

Replaced RHA from SMA

VI

13 (0.6%)

0 (0%)

Accessory RHA

IX

80 (3.5%)

0 (0%)

CHA from SMA

NC

169 (7.4%)

2 (1.14%)

Not classifiable

Total

2,275(100%)

357(15.7%)

 
  1. LHA, left hepatic artery; CHA, common hepatic artery; LGA, left gastric artery; RHA, right hepatic artery; SMA, superior mesenteric artery; NC, not classifiable.