Impact of depth and extent of lymphovascular space invasion on lymph node metastasis and recurrence patterns in endometrial cancer.
J Surg Oncol 2015;
112:669-76. [PMID:
26391212 PMCID:
PMC7526048 DOI:
10.1002/jso.24049]
[Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 09/09/2015] [Indexed: 01/22/2023]
Abstract
BACKGROUND AND OBJECTIVES
To determine the significance of depth and extent of lymphovascular space invasion (LVSI) on lymph node metastasis and recurrence in endometrial cancer.
METHODS
A case-control study was conducted to examine LVSI-positive (n = 70) and LVSI-negative (n = 641) stage I-III endometrial cancer cases that underwent hysterectomy-based surgical staging. The risk of lymph node metastasis and distant recurrence was estimated based on LVSI patterns.
RESULTS
In multivariate analysis, deep (>50% invasion), and extensive (≥7 foci/slide) LVSI patterns had a significantly increased risk of lymph node metastasis (incidence 57.6% and 72.7%, odds ratio 33.8 and 49.9, respectively, P < 0.001) as compared to other traditional uterine factors (>50% myometrial tumor invasion, cervical stromal invasion, and adnexal involvement: incidence range 30.4-37.9%, odds ratio range 3.80-7.03). Deep and extensive of LVSI patterns were both significantly correlated to distant recurrence (P < 0.001). Among women who received postoperative chemotherapy, deep and extensive LVSI patterns did not have increased risks for distant recurrence compared to no LVSI (P = 0.47 and 0.32, respectively). Among women who received postoperative radiotherapy, the depth of LVSI was significantly associated with recurrence outside the radiated field (P = 0.02).
CONCLUSIONS
Depth and extent of LVSI are important predictors for lymph node metastasis and distant recurrence in endometrial cancer.
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