Questionnaire survey regarding the current status of super-extended lymph node dissection in Japan

Table 1 List of questions regarding para-aortic nodal dissection

1. Do you have any experience performing D2 plus PAND (so-called D3 surgery)?
A.	Yes (a: Presently; b: In the past)
	Please indicate the number of patients who have received D3 surgery at your institution and go to question 2.
	( ) patients.
B.	No (end of questionnaire)
2. When performing a distal gastrectomy, do you dissect the left upper lateral nodes (“No.16-a2-lat”)?
A.	Yes
B.	Sometimes (please specify: )
C.	No
3. The following questions concern prophylactic PAND.
3-1. Do you dissect PAN prophylactically, even if there is no obvious metastasis in the same area?
A.	Yes
B.	Sometimes (please specify: )
C.	No
3-2. Do you perform PAN sampling in the absence of an enlarged PAN?
A.	Yes
B.	Sometimes (please specify the site: )
C.	No
3-3. Do you dissect PAN additionally in cases that test positive after an intraoperative rapid diagnosis?
A.	Yes
B.	No
4. The following questions concern therapeutic PAND.
4-1. Which treatment option do you select if there is obvious metastasis in the PAN area?
A.	Chemotherapy administered before surgery (go to question 4-2)
B.	Surgery (go to question 4-8)
C.	Only chemotherapy
4-2. Which chemotherapy regimen do you use?
A.	S1 + CDDP
B.	Docetaxel + CDDP + S1
C.	Other (please specify: )
4-3. How many courses of preoperative chemotherapy do you use?
A.	2 courses
B.	3 courses
C.	Other (please specify: )
4-4. Do you administer additional chemotherapy if a complete or partial response is obtained after the preoperative chemotherapy?
A.	Yes (please specify: )
B.	No
4-5. Please select the extent of the lymph node dissection that you use for patients with a complete or partial response after preoperative chemotherapy.
A.	D2
B.	D2 plus PAN sampling
C.	D3
4-6. Please select the extent of lymph node dissection that you use for patients with stable disease after preoperative chemotherapy.
A.	D2
B.	D2 plus PAN sampling
C.	D3
4-7. Please select the extent of lymph node dissection that you use for patients with progressive disease after preoperative chemotherapy if there is no evidence of distant metastasis, except for PAN swelling, is present.
A.	D2
B.	D2 plus PAN sampling
C.	D3
4-8. Please select the extent of lymph node dissection that you use for patients who have not received preoperative chemotherapy.
A.	D2
B.	D2 plus PAN sampling
C.	D3

PAND: Para-aortic nodal dissection.