Segmental duodenectomy for gastrointestinal stromal tumor of the duodenum

Table 1 Patients characteristics and follow-up

Cases	Localization	Size (cm)	Mitosis/50 HPF	Fletcher grade	Surgery	Follow-up	DFS	Second-line therapy
1	D2	6.5	34	HR	PD	60	13	Imatinib and hepatectomy
2	D1	7	19	HR	PD	56	12	Imatinib
3	D1	2.5	3	LR	SD	85	85	-
4	D2	2	2	LR	Atypical duodenectomy	40	40	-
5	D2-3	10	10	HR	SD	37	37	-
6	D3	7	2	IR	SD	29	29	-
7	D4	5.5	5	IR	SD	18	18	-

D1: First part of the duodenum; D2: Second part of the duodenum; D3: Third part of the duodenum; D4: Forth part of the duodenum; HR: High risk; IR: Intermediate risk; LR: Low risk GIST according to Fletcher scale; HPF: High-power field; DFS: Disease free survival.