Fig. 8

a Intraoperative findings revealed that lymph node metastasis occurred in the mesentery of the ileum. The arrow shows the lymph node metastasis in the ileal mesentery. b–d Lymphadenectomy was performed, and the arrowhead shows the defect of ileal mesentery after lymphadenectomy. The arrow shows the anastomosis where the first operation of the partial resection of invaded ileum was done, and it was near the lymph node metastasis location