Comparison of clinical characteristics and prognostic factors in two site-specific categories of ampullary cancer

Table 2 Perioperative outcomes of ampulla of Vater cancer and duodenal papilla cancer, n (%)

Variables	AVC (n = 145)	DPC (n = 211)	P value
Duration of surgery, min	350 (290-420)	324.5 (256.3-413)	0.16
Intraoperative blood loss, mL	275 (100-400)	275 (100-500)	0.76
Postoperative hospital stay, day	22.32 ± 9.8	21.96 ± 9.5	0.72
Surgical margin			0.67
Negative	142 (97.9)	209 (99.1)
Positive	3 (2.1)	2 (0.9)
TNM stage			0.58
I	68 (62.4)	126 (68.1)
II	31 (28.4)	46 (24.9)
III	10 (9.2)	13 (7.0)
Tumor size, cm	1.7 ± 1.5	1.9 ± 1.7	0.59
Number of positive lymph nodes			0.83
≤ 1	118 (84.3)	166 (83.4)
≥ 2	22 (15.7)	33 (16.6)
Delayed gastric emptying			0.35
Yes	91 (62.8)	122 (57.8)
No	54 (37.2)	89 (42.2)
Pancreas fistula			0.74
Yes	43 (29.7)	66 (31.3)
No	102 (70.3)	145 (68.7)
Postoperative hemorrhage			0.67
Yes	8 (5.5)	14 (6.6)
No	137 (94.5)	197 (93.4)
Postoperative infection			0.87
Yes	5 (3.4)	8 (3.8)
No	140 (96.6)	203 (96.2)
Adjuvant therapy			0.72
Yes	28 (19.3)	44 (20.9)
No	117 (80.7)	167 (79.1)
Overall survival, month	44.3 ± 35.9	58.9 ± 38.7	< 0.01a

^aP < 0.05.

TNM: Tumor node metastasis; AVC: Ampulla of Vater cancer; DPC: Duodenal papilla cancer.