Metastasis to para-aortic lymph nodes cephalad to the renal veins in patients with ovarian cancer

Author:

Komiyama Shinichi,Nagashima Masaru,Taniguchi Tomoko,Rikitake Takayuki,Morita Mineto

Abstract

Abstract Background In patients with epithelial ovarian cancer, whether metastasis to para-aortic lymph nodes located cephalad to the renal veins (supra-renal PAN) should be classified as regional lymph node metastasis or distant metastasis remains controversial. This study was a preliminary retrospective evaluation of the pattern of supra-renal PAN metastasis in patients with epithelial ovarian cancer. Methods The subjects were 25 patients with epithelial ovarian cancer, primary peritoneal cancer, or fallopian tube cancer who underwent systematic dissection of the para-aortic nodes, including the supra-renal PAN, and pelvic lymph nodes (PLN). Patient factors, perioperative factors, the number of dissected lymph nodes, and pathological lymph node metastasis were investigated. Results Supra-renal PAN metastasis was found in 4/25 patients (16.0%). None of the 14 patients with pT1 or pT2 disease had supra-renal PAN metastasis, while 4/11 patients (36.4%) with pT3 or ypT3 disease had such metastases. None of the patients had isolated supra-renal PAN metastasis, while patients with supra-renal PAN metastasis also had multiple metastases to the infra-renal PAN and PLN. Conclusions In patients with epithelial ovarian cancer, supra-renal PAN metastases might be considered to be distant rather than regional metastases. Further studies are needed to better define the clinical significance of supra-renal PAN metastasis.

Funder

Japan Society for the Promotion of Science

Publisher

Springer Science and Business Media LLC

Subject

Oncology,Surgery

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