Characterization of Lymph Node Tumor Burden in Node-Positive Prostate Cancer Patients after Robotic-Assisted Radical Prostatectomy with Extended Pelvic Lymph Node Dissection.

Publication Title

Cancers (Basel)

Authors

Josh Gottlieb, Department of Urologic Oncology, Providence St. John's Cancer Institute, Santa Monica, CA 90404, USA.Follow
Shu-Ching Chang, Department of Biostatistics, Providence St. Joseph Health, Portland, OR 97213, USA.Follow
Jane Choe, Department of Urologic Oncology, Providence St. John's Cancer Institute, Santa Monica, CA 90404, USA.
Gary Grunkemeier, Department of Biostatistics, Providence St. Joseph Health, Portland, OR 97213, USA.Follow
Douglas Hanes, Department of Biostatistics, Providence St. Joseph Health, Portland, OR 97213, USA.Follow
David L Krasne, Department of Pathology, Providence St. John's Cancer Institute, Santa Monica, CA 90404, USA.Follow
Dave S B Hoon, Department of Translational Molecular Medicine, Providence St. John's Cancer Institute, Santa Monica, CA 90404, USA.Follow
Timothy G Wilson, Division of Urologic Oncology, Providence St. John's Health Center, Santa Monica, California, USAFollow

Document Type

Article

Publication Date

7-21-2023

Keywords

BCR; biochemical recurrence-free survival; lymph node metastasis; pelvic lymph node dissection; prostate cancer; prostatectomy; california; santa monica; sjci; oregon; portland

Abstract

BACKGROUND: Prostate cancer (PCa) nodal staging does not account for lymph node (LN) tumor burden. The LN anatomical compartment involved with the tumor or the quantified extent of extranodal extension (ENE) have not yet been studied in relation to biochemical recurrence-free survival (BRFS).

METHODS: Histopathological slides of 66 pN1 PCa patients who underwent extended pelvic lymph node dissection were reviewed. We recorded metrics to quantify LN tumor burden. We also characterized the LN anatomical compartments involved and quantified the extent of ENE.

RESULTS: The median follow-up time was 38 months. The median number of total LNs obtained per patient was 30 (IQR 23-37). In the risk-adjusted cox regression model, the following variables were associated with BRFS: mean size of the largest LN deposit per patient (log2: adjusted hazard ratio (aHR) = 1.91,

CONCLUSION: LN tumor burden is associated with BRFS. The LN anatomical compartments and the quantified extent of ENE did not show significant association with BRFS.

Clinical Institute

Cancer

Specialty/Research Institute

Oncology

Specialty/Research Institute

Pathology & Laboratory Medicine

Specialty/Research Institute

Urology