Randall Glenn Bissette

Mr. Randall Glenn Bissette

orcid

Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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12 November 2024 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
MSMaxwell Sandberg
Maxwell Sandberg
RVRachel Vancavage
Rachel Vancavage
JRJustin Refugia
Justin Refugia
GUGavin Wayne Underwood
Gavin Wayne Underwood
EYEmily Ye
Emily Ye
ARAlejandro Remigio Rodriguez
Alejandro Remigio Rodriguez
Background: The incidence of urinary tract infections (UTIs) after radical cystectomy (RC) with urinary diversion (UD), the typical pathogens, and associated patient risk factors have not been well documented. In this study, we examined the incidence of post-op UTIs after RC to identify associated risk factors. Methods: Single-center, retrospective case series of 386 patients with bladder cancer who underwent RC with UD between 2012 and 2024. The primary objective was UTI incidence, defined by the frequency of patients with urine culture with >105 colony-forming units per high-powered field, spanning from post-op day 0 (POD0) to 90 days after discharge. Isolated pathogens were reported. Risk factors for UTIs were assessed. Results: The average age was 69 years old at surgery, and patients were predominantly male (80%). The cumulative incidence of post-op UTIs was 14%, among which 12 patients had more than one UTI. The UTI incidence was 2%, 8%, and 7% during the immediate post-op period, within 30 days, and within 31–90 days, respectively. Isolated pathogens included Escherichia coli (26%), Enterococcus faecalis (24%), Klebsiella pneumoniae (21%), and Pseudomonas species (21%). In the immediate post-op period, female sex was the only significant risk factor. At 31 to 90 days, cutaneous ureterostomy UD was the predominant risk factor for UTIs. For ileal conduit patients, those with a Wallace ureteral anastomosis were associated with UTI 31–90 days from discharge for RC. Conclusions: Our retrospective data suggests the incidence of UTIs and their causative pathogens after RC differ based on post-operative time points and vary according to different patient risk factors.

Verified
Journal Article
Open access
PDF file
MSMaxwell Sandberg
Maxwell Sandberg
WWWyatt Whitman
Wyatt Whitman
RBRandall Glenn Bissette
Randall Glenn Bissette
CRChristina Ross
Christina Ross
MTMatvey Tsivian
Matvey Tsivian
SWStephen Walker
Stephen Walker
Background/Objectives: Pulsed electromagnetic field (PEMF) therapy involves the use of magnetic waveform energy for targeted treatment delivery. This technique has shown promising results in the treatment of various cancers. Currently, treatment of bladder cancer is highly invasive, involving intravesical chemotherapy or radical cystectomy. The potential therapeutic effects of PEMF therapy on bladder cancer are a relatively new and understudied area; therefore, the goal of this investigation was to gain mechanistic insight by examining the effects of PEMF therapy on a bladder cancer cell line in vitro. Methods: Cells from the bladder cancer cell line HT-1197 were cultured and incubated with (treatment group) or without (control group) PEMF therapy for one hour each day for five days. Cell counts were compared using Incucyte® data to determine proliferation rates. At days 1 and 5, total RNA was isolated from cells, and following quantity and quality checks, gene expression was compared between the two groups. Proliferation rates from cell line HT-1197 were compared to prior published results on the bladder cancer cell line HT-1376. Results: HT-1197 cells treated with PEMF therapy had slower proliferation rates compared to controls (p < 0.05), but HT-1376 cells did not (p > 0.05). Principal component analysis showed complete separation of treated and untreated cells, with PEMF treatment accounting for 76% of the variation between the groups. Expression of numerous genes and cancer-related pathways was altered in the treated cells relative to the controls. Conclusions: Bladder cancer HT-1197 cells treated with PEMF therapy had slower proliferation and corresponding changes in gene expression. Several cancer-relevant pathways were differentially regulated following PEMF treatment. The conclusions are limited by the lack of a control healthy urothelial cell line in the experiments. Despite this shortcoming, our results suggest that PEMF therapy may be a promising avenue for further research in the treatment of bladder cancer.

30 October 2025 in Cancers
Verified
Journal Article
Open access
PDF file
MSMaxwell Sandberg
Maxwell Sandberg
GRGregory Russell
Gregory Russell
PKPhilip Krol
Philip Krol
MHMitchell Hayes
Mitchell Hayes
RBRandall Glenn Bissette
Randall Glenn Bissette
ARAlejandro Remigio Rodriguez
Alejandro Remigio Rodriguez
Background/Objectives: For surgical candidates with metastatic renal cell carcinoma with a tumor thrombus (mRCC-TT), surgery is cytoreductive nephrectomy with tumor thrombectomy (CN-TT). This is carried out through an open (OCN-TT), laparoscopic (LCN-TT), or robotic (RCN-TT) approach. The purpose of this study was to compare survival outcomes to CN-TT by operative approach. Methods: This was a retrospective analysis of all patients with a diagnosis of mRCC-TT, who underwent CN-TT from a multi-institutional database from 1999–2024. Metastatic locations were qualified as either lung, bone, brain, liver, retroperitoneum, adrenal, paraaortic nodes, or other nodes. Progression was defined as radiographic evidence of recurrence or metastasis not seen on imaging prior to CN-TT. Progression locations were all metastatic locales previously noted plus the nephrectomy bed. Overall survival (OS), cancer-specific survival (CSS), and progression-free survival (PFS) were calculated. Comparisons were performed between OCN-TT, LCN-TT, and RCN-TT. Results: A total of 131 patients were included in the analysis (97 OCN-TT, 25 LCN-TT, and 9 RCN-TT). The TT level was not different (p-value > 0.05) by approach (p-value > 0.05). Preoperative tumor size, final pathologic tumor subtype, and postoperative tumor size were equivalent between the three surgical approaches (p-value > 0.05). Rates of progression were equivalent as were all locations of disease progression in the study (p-value > 0.05). Median OS was 1.6 years in OCN-TT, 1.5 years in LCN-TT, and 2.5 years in RCN-TT (p-value = 0.42). Median CSS was 2.1 years in OCN-TT, 3 years in LCN-TT, and 2.5 years in RCN-TT (p-value = 0.86). PFS was 0.8 years in OCN-TT, 1.2 years in LCN-TT, and 1.2 years in RNC-TT (p-value = 0.76). Conclusions: The operative approach does not affect survival outcomes for CN-TT. Surgeon comfort and patient preference should weigh heavily in operative decision making.

16 December 2024 in Current Treatment Options in Pediatrics
Verified
Journal Article
Open access
PDF file
RBRandall Glenn Bissette
Randall Glenn Bissette
MEMia P. Edelson
Mia P. Edelson
KCKevin J. Campbell
Kevin J. Campbell
CBChristopher E. Bayne
Christopher E. Bayne
Purpose of Review: Pediatric varicoceles are common, yet the paucity of data on long-term fertility outcomes does not establish recommendations for conservative management and reassurance versus pediatric urology referral for consideration of surgical intervention. This review incorporates recent literature to generate pragmatic, objective methodology for the evaluation and management of pediatric varicoceles. Recent Findings: The initial evaluation of pediatric varicoceles includes focused history, physical exam, and use of an orchidometer or ultrasound for volume assessment. In early puberty, asynchronous testicular growth may be transient and monitored serially via ultrasound. Further workup may include semen analysis (SA), ultrasound of spermatic veins to determine peak retrograde flow (PRF), and hormonal analysis. Pediatric varicoceles may be managed with observation and reassurance or referral to pediatric urology for consideration of surgical intervention. In patients presenting before Tanner V stage, management is typically expectant, with pain warranting referral. Definitive indications for referral once Tanner V is reached include pain, undesirable appearance, bilateral varicoceles, persistent testicular atrophy, low total testicular volume (TTV), elevated peak retrograde flow on Doppler ultrasonography, persistently low total mobile sperm count (TMSC) on repeat SA, or infertility. Summary: Most pediatric and adolescent patients with varicocele may be reassured and monitored serially. Straightforward and objective assessment tools should be used when further workup is warranted, providing clear guidance on elevation of care from pediatricians to pediatric urologists.

1 January 2026 in Investigative and Clinical Urology
Verified
Journal Article
Open access
PDF file
MSMaxwell Sandberg
Maxwell Sandberg
DTDavid Thole
David Thole
RBRandall Glenn Bissette
Randall Glenn Bissette
DWDylan Wolff
Dylan Wolff
MSMadeline Sandberg
Madeline Sandberg
ARAlejandro Remigio Rodriguez
Alejandro Remigio Rodriguez
Sandberg M, et al. Investig Clin Urol. 2026 ;67:e26. https://doi.org/10.4111/icu.20250644

28 March 2025 in Current Treatment Options in Pediatrics
Verified
Journal Article
Open access
PDF file
RBRandall Glenn Bissette
Randall Glenn Bissette
MEMia P. Edelson
Mia P. Edelson
KCKevin J. Campbell
Kevin J. Campbell
CBChristopher E. Bayne
Christopher E. Bayne