[Curative dissection of paraaortic lymph node metastases after operation for ascending colon cancer].

ABSTRACT

In October 2007, a 69-year-old woman underwent right hemicolectomy and D3 lymph node dissection for the treatment of adenocarcinoma (type 2, por2]tub2, pSS, pN3, fStage IIIb). Serum carcinoembryonic antigen (CEA) concentration was 152.8 ng/mL preoperation, but returned to normal after the operation. Adjuvant chemotherapy using 450 mg/day UFT-E was added. Computed tomography (CT) examination revealed a swollen paraaortic lymph node 3 months after the operation, while serum CEA concentration had increased to 92.7 ng/mL. After the chemotherapy was changed to FOLFOX, the paraaortic lymph node shrank and serum CEA concentration decreased. However, after 6 courses, serum CEA concentration increased again and bevacizumab-FOLFIRI therapy was initiated. After 3 courses of bevacizumab-FOLFIRI were not effective, paraaortic lymph node dissection was performed in February 2009. Pathological examination of the resected specimen showed metastatic adenocarcinoma. At present, the patient is alive without any signs of recurrence. Although the effectiveness of chemotherapy for paraaortic lymph node metastasis of colorectal cancer has been described, complete cure has not been reported. Thus, surgical resection has the potential to cure solitary recurrence of paraaortic lymph node metastasis, and therefore, should be considered in the treatment of such cases.