Late nodal recurrence after two curative resections for microinvasive intraductal papillary mucinous carcinoma: A case report

Figure 4 Radiologic detection and chemotherapy response of lymph node recurrence. A: Contrast-enhanced computed tomography (CE-CT) in January 2020 shows a 27 mm × 22 mm mixed solid-mucinous mass right of the superior mesenteric artery (orange arrowhead), with elevated carbohydrate antigen 19-9 and duodenal pancreatic cancer antigen-2 indicating lymph node recurrence of microinvasive intraductal papillary mucinous carcinoma; B: CE-CT in March 2022 demonstrates complete resolution of the lymph node recurrence (orange arrowhead) and normalization of tumor markers, consistent with a favorable response to S-1 therapy.