Variation in Lymph Node Yield After Radical Cystectomy

Author:

Faraj Kassem S1ORCID,Judge Nathanael1,Chang Yu-Hui H2,Blodgett Gail3,Stanton Melissa L4,Tyson Mark D1

Affiliation:

1. Departments of Urology

2. Departments of Biostatistics

3. Patient Collaboration, Mayo Clinic, Scottsdale, AZ, USA

4. Pathology, Mayo Clinic Hospital, Phoenix, AZ, USA

Abstract

Abstract Objectives To test the hypothesis that lymph node yield will vary by pathology assistant (PA) in patients undergoing radical cystectomy (RC) with pelvic lymph node dissection (PLND). Methods This is a single-institution retrospective review that included patients who underwent an RC with PLND for bladder cancer from January 1, 2007, to January 1, 2018. Predicted mean lymph node counts were generated using multivariable regression analysis. Results In a total of 430 patients who underwent RC with PLND, the median lymph node count (interquartile range) was 15.0 (11.0-21.0). The frequency of the limits of lymphadenectomy was as follows: external iliac, internal iliac, and obturator (true pelvis) (33.3%); true pelvis plus common iliac to the level of the aortic bifurcation (47.9%); and inferior mesenteric artery (18.8%). On descriptive analysis, there were differences in lymph node yield when evaluating the following variables: level of dissection, clinical stage, neoadjuvant chemotherapy, surgical approach, surgeon, pathologist, and PA (P < .05). On multivariable analysis, adjusted lymph node counts varied between surgeons, pathologists, clinical stage, and level of dissection but not by PA (P = .18). Conclusions Lymph node yield after RC varies on several known levels, including surgeon, extent of lymphadenectomy, clinical stage, and pathologist. This study found no significant variation in lymph node yield according to PA.

Funder

Robert D. and Patricia E. Kern Center for Health Care Delivery Science

Christian Haub Family Career Development

Eric and Gail Blodgett Foundation

Publisher

Oxford University Press (OUP)

Subject

General Medicine

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