Author Interviews, Prostate, Prostate Cancer, Urology / 26.11.2015
Can Active Surveillance Be Extended To Some Men With Elevated PSAs?
MedicalResearch.com Interview with:
Isaac Yi Kim, MD, PhD
Acting Chief and Associate Professor, Division of Urology
Rutgers Robert Wood Johnson Medical School
Chief, Section of Urologic Oncology and
Young Suk "Joseph" Kwon, MD
Post-doctoral fellow Section of Urologic Oncology
Rutgers Cancer Institute of New Jersey
Rutgers, The State University of New Jersey
New Brunswick, NJ 08903
Medical Research: What is the background for this study?
Response: Although PSA < 10 ng/mL is a typically required condition under which many active surveillance (AS) protocols operate, this current guideline may predispose lower risk patients with incongruently elevated PSA to aggressive and potentially unnecessary therapies. Specifically, urologists infrequently encounter patients with PSA > 10 ng/ml but biopsy demonstrating a relatively lower risk prostate cancer (PCa).
Therefore, we wanted to test whether active surveillance may be a viable option in some men with a histologically favorable risk prostate cancer and serum PSA between 10 and 20 ng/ml.
Medical Research: What are the main findings?
Response: We compared oncologic outcomes in men with favorable biopsy histology and varying PSA levels: low, intermediate, and high PSA levels.
The rates of upstaging and upgrading were similar between the intermediate PSA (IP) (≥10 and 20) and low PSA (LP) (<10) group. In contrast, the high PSA (HP) (≥20) group had higher incidences of both upstaging (p=0.02) and upgrading to ≥4+3 (p=0.046) compared to the IP group. BCR-free survival rates revealed no pair-wise inter-group differences, except between low PSA and high PSA .
Dr. Jerome Leis[/caption]
MedicalResearch.com Interview with:
Jerome A. Leis, MD MSc FRCPC
Staff physician, General Internal Medicine and Infectious Diseases
Physician Lead, Antimicrobial Stewardship Team
Staff member, Centre for Quality Improvement and Patient Safety
Sunnybrook Health Sciences Centre
Assistant Professor, Department of Medicine, University of Toronto
Medical Research: What is the background for this study? What are the main findings?
Dr. Leis: Overuse of urinary catheters leads to significant morbidity among hospitalized patients. In most hospitals, discontinuation of urinary catheters relies on individual providers remembering to re-assess whether patients have an ongoing reason for a urinary catheter. We engaged all of the attending physicians to agree on the appropriate reasons for leaving a urinary catheter in place and developed a medical directive for nurses to remove all urinary catheters lacking these indications. This nurse-led intervention resulted in a significant reduction in urinary catheter use and catheter-associated urinary tract infections, compared with wards that continued to rely on usual practice.





alResearch.com Interview with:
David C. Johnson, MD, MPH
Department of Urology
University of North Carolina School of Medicine
Medical Research: What are the main findings of the study?
Dr. Johnson: The first main finding from this study is that the likelihood of benign pathology after surgical removal of a renal mass suspected to be malignant based on pre-operative is inversely proportionate to size. This concept is well-established, however we systematically reviewed the literature for surgical series that published rates of benign pathology stratified by size and combined these rates to determine a single pooled estimate of benign pathology of pre-operatively suspicious renal masses for each size strata. Using benign pathology rates from US studies only, we found that 40.4% of masses < 1 cm, 20.9% of masses 1-2 cm, 19.6% of masses 2-3 cm, 17.2% of masses 3-4 cm, 9.2% of masses 4-7 cm, and 6.4% of masses >7 cm are benign.
The more novel finding from this study was the quantification of a previously unmeasured burden of over treatment in kidney cancer. By combining the above mentioned rates of benign pathology with epidemiological data, we estimated that the overall burden of benign renal masses surgically removed in the US to approach 6,000 per year in 2009. This represented an 82% increase over the course of a decade. Most importantly, we found an overwhelmingly disproportionate rise in the surgical treatment of renal masses in the smallest size categories – those which were most likely to be benign. We found a 233%, 189% and 128% increase in surgically removed benign renal lesions < 1 cm, 1-2 cm, and 2-3 cm, respectively from 2000 – 2009 in the US.




