Accuracy of routine multidetector computed tomography to identify arterial variants in patients scheduled for pancreaticoduodenectomy

Table 1 Patient baseline characteristics n (%)

Characteristics	Patients assessed for aberrant RHA (n = 458)	Patients assessed for CAS(n = 181)
Age, (yr)	57.2 ± 12.9	57.3 ± 13.6
Male	242 (52.8)	102 (56.4)
Unresectable disease	82 (17.9)	82 (45.3)
Diagnosis
Pancreatic adenocarcinoma	291 (63.5)	150 (82.9)
Pancreatic cystic neoplasm	34 (7.4)	6 (3.3)
Pancreatic neuroendocrine tumor	14 (3.1)	4 (2.2)
Ampullary adenocarcinoma	31 (6.8)	9 (5.0)
Duodenal adenocarcinoma	19 (4.1)	1 (0.6)
Others	69 (15.1)	11 (6.1)
Surgery
Whipple	318 (69.4)	87 (48.1)
PPPD	58 (12.7)	12 (6.6)
Palliative bypass	13 (2.8)	4 (2.2)

CAS: Celiac artery stenosis; RHA: Right hepatic artery.

Table 2 Diagnostic accuracy of routine multidetector computed tomography in preoperative identification of arterial variants

Arterial variants	Sensitivity	Specificity	Accuracy	PPV	NPV
Aberrant RHA	96.3 (86.2-99.4)	98.8 (97-99.5)	98.5	91.2 (80-96.7)	99.5 (98-99.9)
RRHA	89.7 (71.5-97.3)	99.1 (97.5-99.7)	98.5	86.7 (68.4-95.6)	99.3 (97.8-99.8)
ARHA	73.3 (44.8-91.1)	98.6 (96.9-99.4)	97.8	64.7 (38.6-84.7)	99.1 (97.5-99.7)
RCHA	100 (65.5-100)	100 (98.9-100)	100	100 (65.5-100)	100 (98.9-100)
CAS	58.3 (28.6-83.5)	98.2 (94.5-99.5)	95.6	70 (35.4-91.9)	97.1 (92.9-98.9)

RCHA: Replaced common hepatic artery; ARHA: Accessory right hepatic artery; RHA: Right hepatic artery; CAS: Celiac artery stenosis; RRHA: Replaced right hepatic artery; PPV: Positive predictive value; NPV: Negative predictive value.