Clinical impact of preoperative acute pancreatitis in patients who undergo pancreaticoduodenectomy for periampullary tumors

Table 2 Demographic data, operation and pathologic characteristics of pancreaticoduodenectomy patients n (%)

Parameter	AP (n = 34)	Control (n = 145)	P value
Patient variables
Age (yr), mean ± SD	55.9 ± 11.26	59.0 ± 10.92	0.131
Male	21 (61.8)	93 (64.1)	0.796
Weight loss	17 (50)	59 (40.7)	0.323
Comorbid disease	9 (26.5)	47 (32.4)	0.501
Preoperative jaundice	11 (32.4)	68 (43.9)	0.124
Pancreas remnant (soft)	29 (85.3)	109 (75.2)	0.206
Pancreatic duct diameter (< 3 mm)	22 (64.7)	92 (63.4)	0.891
Treatment variables
Preoperative biliary drainage	6 (17.6)	11 (7.6)	0.099
Time to surgery (d), mean ± SD	18.4 ± 10.76	6.0 ± 2.5	< 0.001
Intraoperative blood transfusion	11 (32.4)	62 (35.9)	0.700
Vein resection	1 (2.9)	7 (4.8)	0.632
Pathological variables
Characteristics of resectable tumors			0.062
Pancreatic carcinoma	21 (61.8)	58 (40)
Ampullary carcinoma	4 (11.8)	19 (13.1)
Duodenal carcinoma	2 (5.9)	35 (24.1)
Distal bile duct carcinoma	3 (8.8)	18 (12.4)
Other diagnosis	4 (11.8)	15 (10.3)
Benign: malignant ratio	4/30	130/15	1.000
Tumor-positive lymph nodes (N1)	16 (53.3)	39 (30.2)	0.017
Microscopically residual disease (R1)	1 (2.9)	2 (1.4)	0.523