Distinct lymphatic spread of endometrial carcinoma in comparison with cervical and ovarian carcinomas

Cancer Letters
Koji MatsumotoYuji Taketani

Abstract

The distribution of metastatic pelvic lymph nodes (PLNs) and aortic lymph nodes (ALNs) in 27 node-positive endometrial carcinomas (ECs) was analyzed in comparison with that in 25 node-positive cervical carcinomas (CCs) and 58 node-positive ovarian carcinomas (OCs). All patients underwent systematic pelvic and aortic lymphadenectomy. Lymph nodes were classified into the five subgroups: ALN above the inferior mesenteric artery (IMA; A1), ALN below the IMA (A2), the common iliac and sacral LNs (P1), the internal and external iliac LNs and obturator LNs (P2) and the suprainguinal LNs (P3). EC was similar to CC in that metastases to P2 were more frequent compared to A1 or A2, whereas EC and OC shared a common feature in that A1, A2 and P2 were involved at high rates. ALN metastases were significantly associated with P1 positivity in both EC and CC (P<0.05), but not in OC. However, the incidence of both ALN and PLN metastases in EC (67%) was similar to that in OC (61%), being much higher than that in CC (36%). ALN involvement alone was observed in 7% for EC, 0% for CC and 21% for OC. Based on the distribution of LN metastases, it appears that CC metastasizes primarily to PLN, whereas OC metastasizes almost equally to both PLN and ALN...Continue Reading

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