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BALTIMORE, MD - NOVEMBER 22: Inside the urology clinic, Keith Boissiere (R) has his dialysis fistula inspected by Andrew C. Kramer, MD, associate professor of surgery, University of Maryland School of Medicine and urologist (C) as Meagan Dunne, MD, Urology Resident (L) looks on at University of Maryland Medical Center on November 22, 2016 in Baltimore, Maryland. The 'Running Man' has suffered from obstructive uropathy, essential hypertension, bradycardia, nonischemic cardiomyopathy, and vertigo, among other symptoms - all which started with a benign prostatic hyperplasia, or BPH, diagnosis. Many of these played a role in his kidneys only functioning at thirty percent - and was diagnosed with Stage 4 of Chronic Kidney Disease. He underwent a procedure to install an arteriovenous fistula so that he could receive his first - and only round of dialysis - to date. Additionally, he was also placed on a kidney donor recipient list. His visit with Dr. Kramer was a followup prescribed by his primary physician regarding past surgery on his prostate. Keith Boissiere has been running nearly every day for the past three decades - averaging more than 20 miles per day - for his health. Many residents only know the enigmatic figure by his nickname of the 'Running Man.' (Photo by Patrick Smith/Getty Images)