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Jaishankar S, Pifer PM, Bhargava R, Keller A, Musunuru HB, Patel AK, Sukumvanich P, Boisen M, Berger JL, Taylor S, Courtney-Brooks M, Olawaiye A, Lesnock J, Edwards R, Vargo JA, Beriwal S. Is Substantial Lymphovascular Space Invasion Prognostic for Clinical Outcomes in Type II Endometrial Cancer? Clin Oncol (R Coll Radiol) 2022; 34:452-458. [PMID: 35264314 DOI: 10.1016/j.clon.2022.02.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 01/26/2022] [Accepted: 02/21/2022] [Indexed: 11/03/2022]
Abstract
AIMS Substantial lymphovascular space invasion (LVSI) compared with none or focal LVSI is predictive of lymph node involvement and worse clinical outcomes in endometrioid-type endometrial carcinoma. We aimed to quantify the incidence of substantial LVSI in type II (clear cell and serous) endometrial cancer and correlate the extent of LVSI with clinical outcomes. MATERIALS AND METHODS A retrospective review was conducted on type II endometrial cancer patients who underwent surgical management from July 2017 to December 2019 using the three-tier LVSI scoring system. Binary logistic regression and Cox regression were used to analyse predictors of lymph node involvement or survival outcomes, respectively. The Kaplan-Meier method and Log-rank test were used to analyse differences in locoregional disease-free survival (LR-DFS), distant metastasis disease-free survival (DM-DFS) and overall survival between patients with substantial versus none/focal LVSI. RESULTS In 79 patients with type II endometrial carcinoma, no LVSI, focal LVSI and substantial LVSI was present in 48.1%, 15.2% and 36.7% of patients, respectively. Lymph nodes were involved in 0.0% with no LVSI, 20.0% with focal LVSI and 60.0% with substantial LVSI (P < 0.001). The median follow-up was 22.2 months. In patients with none/focal versus substantial LVSI, the 2-year LR-DFS and DM-DFS rates were 91.5% versus 71.4% (P = 0.01) and 90.2% versus 63.8% (P = 0.005), respectively. On univariate analysis, myometrial invasion ≥50%, tumour size ≥3.6 cm, substantial versus none/focal LVSI, lymph node involvement and omission of adjuvant radiotherapy were significant predictors for worse LR-DFS and DM-DFS (P < 0.05). DISCUSSION Substantial LVSI has a high incidence in type II pathology at our institution and predicts for lymph node involvement and worse clinical outcomes.
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Affiliation(s)
- S Jaishankar
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - P M Pifer
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - R Bhargava
- Department of Pathology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - A Keller
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - H B Musunuru
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - A K Patel
- Division of Radiation Oncology, Allegheny Health Network Cancer Institute, Pittsburgh, PA, USA
| | - P Sukumvanich
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - M Boisen
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - J L Berger
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - S Taylor
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - M Courtney-Brooks
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - A Olawaiye
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - J Lesnock
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - R Edwards
- Department of Gynecologic Oncology, Magee-Women's Hospital, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - J A Vargo
- Department of Radiation Oncology, UPMC Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - S Beriwal
- Division of Radiation Oncology, Allegheny Health Network Cancer Institute, Pittsburgh, PA, USA; Varian Medical Systems, Charlottesville, VA, USA.
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