The patient was a 67-year-old man. A Type 0-Ⅱa+Ⅱc
tumor, 20mm in size was observed in the 1st portion of the duodenum under magnifying endoscopy. Mucosal
cancer was suspected and endoscopic resection was performed, with pathological findings as follows: Type 0-Ⅱa+Ⅱc, 19×12 mm, tub1, pT1b(SM2: 700 mm), pUL0, Ly0, V0, pHM0, pVM0. He refused subtotal stomach-preserving
pancreaticoduodenectomy(SSPPD)because of the high morbidity and mortality rates. Instead, he underwent only laparoscopic sampling of No. 5, 6, 12b, and 13a lymph nodes, and
metastasis in a No. 6 node was pathologically confirmed. He eventually underwent SSPPD with D2, but no
metastases were found in other lymph nodes.
Pancreaticoduodenectomy is currently considered the best treatment option for complete removal of regional lymph nodes in
duodenal cancer despite high morbidity and mortality rates. Further studies are needed to determine the pattern and incidence of
lymph node metastasis by location and depth of the primary
tumor, to establish optimal treatment guidelines for
duodenal cancer.