Robotic resection of duodenal gastrointestinal stromal tumour: Preliminary experience from a single centre

Table 1 Patient demographics

Clinicopathologic features	Value (%)
Mean age (range), yr	51.3 ± 13.1 (30-84)
Sex, male/female
Male	19 (68)
Female	9 (32)
Tumor location
Bulb	2 (7)
Descending section	16 (57)
Horizontal section	9 (32)
Ascending section	1 (4)
Surgical technique
Open surgery	13 (46)
Robotic surgery	15 (54)
Types of resection
Limited resection	17 (61)
PD	11 (39)
Tumor size (cm)
≤ 2	2 (7)
2-5	17 (61)
5-10	7 (25)
> 10	2 (7)
Risk assessment (NIH 2008)
Low	19 (68)
Medium	5 (18)
High	4 (14)
Resection margin status
R0	28 (100)
R1	0
Postoperative targeted drug therapy
Yes	9 (32)
No	19 (68)
Postoperative recurrence and metastasis
Yes	4 (14)
No	24 (86)

NIH: National Institutes of Health.

Table 2 Comparison of patients in the open surgery group and robotic surgery group (n = 28)

	No. of patients		P value
	Open	Robotic
Total patients	13	15
Age			0.718
≥ 50 yr	8	8
< 50 yr	5	7
Sex			0.689
Male	8	11
Female	5	4
Tumor size			0.255
< 5 cm	5	10
≥ 5 cm	8	5
Surgical technique			0.700
Limited resection	7	10
PD	6	5
OT (min)			0.029
mean ± SD 1	207.7 ± 63.1	156.0 ± 55.4
EBL (mL)			0.01
mean ± SD 1	340.0 ± 401.8	62.3 ± 34.9
PHS (d)			0.294
mean ± SD 1	16 ± 9.4	15.7 ± 13.4
Mitotic count (/50 HPF)			1.000
≤ 5	12	14
> 5	1	1
Risk assessment			0.072
Low	6	13
Medium	4	1
High	3	1
POPC			1.000
Yes	7	7
No	6	8
Postoperative targeted therapy			1.000
Yes	4	5
No	9	10
Recurrence/metastasis			0.311
Yes	3	1
No	10	14

PD: Pancreatoduodenectomy; OT: Operation time; EBL: Estimated blood loss; PHS: Postoperative hospital stay; HPF: High-power fields; POPC: Postoperative complications.

Table 3 General information on patients with recurrence and metastasis (n = 4)

Patient, No./sex/age, yr	Tumor location	Operation	Recurrent time (mo)	Recurrent location	Risk of disease progression
1/M/75	Descending section	RPD	21	Liver	Medium
2/M/61	Horizontal section	PD	36	Mesocolon	High
3/M/50	Descending section	PD	108	Liver	Medium
4/M/56	Descending section	PD	60	Liver	Medium