Urology- BPH, Prostatitis, and Prostate Cancer

Professional Context of Physician Associate Practice

• The PA Profession Evolution:     * Name Change: The profession has transitioned from "Physician Assistant" back to "Physician Associate." The term "Assistant" suggests a subordinate role merely helping the physician, whereas "Associate" better captures the evolved, high-level clinical role.     * Independence: As PAs transition to the clinic, they function largely independently, making their own clinical decisions while consulting with supervisors only when necessary.     * Regulatory and Financial Shifts: Doctors no longer run the healthcare industry solely. Over the last 10–15 years, insurance companies have assumed control, limiting test orders and medication choices through verification and prior authorization processes.     * Administrative Burdens: Prior authorization requires phone calls and documentation; it is a process designed to discourage the use of expensive medications.     * Value and Productivity: Decreased reimbursement has led hospitals toward a high-volume productivity model. Clinicians are under pressure to do more while maintaining efficiency.     * Theory vs. Practice: Classroom learning involves theory (etiology, pathophysiology), but practice requires applying that knowledge through critical thinking and correct decision-making.

• Speaker Biography:     * Vincent Abraham: A graduate of the program (Class of 1995) who practices at Lincoln Hospital, a city hospital in the Bronx. He emphasizes that clinical practice provides constant motivation through new knowledge and challenges.

Benign Prostatic Hyperplasia (BPH)

• Definition:     * Hyperplasia: An increase in the number of cells.     * Hypertrophy: An increase in cell size.     * Combined Mechanism: In reality, BPH involves both hyperplasia (rapid multiplication) and hypertrophy (individual cells getting bigger).

• Prostatic Anatomy:     * Shape/Location: A walnut-shaped gland located in the true pelvis, weighing approximately $25\text{--}30\,g$ in men in their 20s.     * Structural Divisions:         * Base: The upper part, which abuts the bladder.         * Apex: The lower part.         * Posterior Orientation: It is close to the rectum, allowing for palpation via Digital Rectal Exam (DRE).     * Urethral Enclosure: It surrounds the urethra. As the gland enlarges, it compresses the prostatic urethra, leading to obstructive voiding symptoms.     * Zonal Anatomy:         * Peripheral Zone: The largest component and the most common site for prostate cancers.         * Transitional Zone: The zone that typically enlarges in BPH, causing urethral impingement.     * Primary Function: Production of seminal fluid.

• Epidemiology:     * By age 40 to 45, approximately $60\%$ of men have BPH.     * By age 80, over $80\%$ of men have BPH.     * Crucially, an enlarged prostate is not synonymous with an obstructing prostate; clinical symptoms depend on whether the gland impinges on the urethra.

Clinical Presentation and Medical Interview (BPH)

• Lower Urinary Tract Symptoms (LUTS):     * Frequency: urinating often.     * Urgency: The sensation of needing to rush to the bathroom.     * Hesitancy: Trouble starting the urinary stream.     * Weak Stream: Weak or interrupted flow (stops and starts).     * Straining: Using abdominal muscles to push urine out.     * Dribbling: Post-void leakage.     * Nocturia: Waking up at night to urinate.     * Incomplete Voiding: The sensation that the bladder is still partially full after urinating.

• The Art of the Medical Interview:     * Effective interviewing involves communication, listening, and building trust. Patients evaluate the clinician’s tone, facial expressions, and eye contact.     * Negative Behaviors: Typing on a computer while the patient speaks suggests you are not listening.     * Cultural Considerations:         * Hispanic patients may value physical touch (a hand on the shoulder) to feel that a visit occurred.         * Different cultural groups may exhibit variation in interaction styles (e.g., some may be more stoic and direct with less smiling).     * Reading Body Language: Clinicians must assess if a patient is uncomfortable with specific exams (like a DRE).

• Pathophysiology of Nocturia:     * Circadian Physiology: At night during rest, the parasympathetic nervous system is active, and blood is shunted toward the kidneys, leading to increased urine production.     * Behavioral vs. Pathological: Case study of a 72-year-old patient who reported urinating 4–5 times a night. He watched TV until 4 AM while consuming soda and ice cream. This was a behavioral issue, not prostatic pathology. Behavior modification (cutting down) is often harder than prescribing medication.

Diagnostics for BPH

• Differential Diagnosis:     * Conditions that mimic BPH include UTI, prostatitis, urethral stricture (narrowing often caused by STDs), and bladder cancer.

• Physical Exam (DRE):     * Technique: Palpating size, consistency, and symmetry.     * Findings: A normal prostate feels soft (like the tip of the nose). A hard or nodular gland suggests cancer. A "boggy" or tender gland suggests prostatitis.     * Grading Size: Subjective scale from $1+$ (slight) to $3+$ (very enlarged).

• Laboratory and Imaging:     * Urinalysis: To rule out UTI.     * PSA (Prostate-Specific Antigen): A screening marker.     * Serum Creatinine: To assess kidney function.     * Uroflowmetry: A graph that measures urine velocity. Normal flow peaks and decelerates; obstructed flow is stuttering and prolonged.     * Post-Void Residual (PVR): Measured via bladder ultrasound. A PVR of over $100\,cc$ of urine remaining after voiding is considered abnormal.     * Bladder Ultrasound Findings:         * BPH: Circumferential bladder wall thickening due to detrusor muscle hypertrophy (the bladder is working harder to push against obstruction).         * Cancer Suspicion: Focal (one specific area) bladder wall thickening is more indicative of a neoplasm.     * Cystoscopy: The "gold standard" for diagnosis. A scope is inserted to visualize "kissing lobes" (prostate lobes pressing together) and urethral impingement.

Complications and Treatment for BPH

• Consequences of Obstruction:     * Urinary Retention: Inability to void.     * Overflow Incontinence: When bladder pressure exceeds the sphincter's strength, leading to involuntary leakage that patients may mistake for normal voiding.     * Stasis: Leads to UTIs and bladder stones.     * Kidney Damage: Bilateral hydronephrosis.     * Comorbid Risks: Diabetes can cause nerve degeneration, leading to a neurogenic (passive/distended) bladder.

• Pharmacological Treatment:     * $\alpha$-blockers (e.g., Tamsulosin): Relaxes smooth muscle to improve flow. Side effect: retrograde ejaculation (semen flows back into the bladder).     * 5-Alpha Reductase Inhibitors: Prevents conversion of testosterone to dihydrotestosterone ($DHT$). Shrinks the gland over time. Side effect: Erectile Dysfunction ($ED$).     * Note on Anticholinergics (e.g., Oxybutynin): Not used for BPH. If given to an obstructed patient, it can cause acute urinary retention. Also associated with dementia in elderly women.

• Surgical Treatment:     * TURP (Transurethral Resection of the Prostate): The surgical gold standard. Risk: damage to the urinary sphincter causing incontinence.     * Urolift: Small implants pull back the prostate to open the channel. Used for poor surgical candidates.     * Note: The prostate often grows back over several years regardless of the method.

Prostatitis

• Classification:     * Acute Bacterial: Severe, sudden infection.     * Chronic Bacterial: Recurrent infections.     * Chronic Pelvic Pain Syndrome (CPPS): Pain without evidence of infection; may be due to pelvic floor dysfunction, autoimmune issues, or even psychological anxiety.     * Asymptomatic Inflammatory: Detected incidentally.

• Etiology/Risk Factors:     * Affects young and middle-aged men (prevalence $8\text{--}16\%$).     * Risk factors include STDs, hypersexual behavior, being immunocompromised, Phimosis (narrowed foreskin), and instrumentation/catheterization.

• Signs/Symptoms:     * Pain in the groin, back, scrotum, testes, or tip of the penis.     * Pain on ejaculation is a hallmark sign.     * Boggy Prostate: Soft and acutely tender on DRE.

• Management:     * Antibiotics: Typically Ciprofloxacin (minimum $2\text{--}4$ weeks) or Bactrim.     * Inflammation Control: Motrin (NSAIDs) for pain.     * Complications: If the patient doesn't respond to oral medications, suspect a Prostatic Abscess. This requires imaging and surgical incision & drainage ($I\&D$) + IV antibiotics.

Prostate Cancer

• Risk Factors:     * Age, family history (including mothers with breast cancer), and chronic inflammation.     * Possible decreased risk with frequent ejaculation (clearing infectious organisms).

• Symptoms:     * Early stage: Asymptomatic.     * Advanced: Obstructive symptoms like BPH.     * Metastasis: Frequently spreads to the bones (pelvis, spine, ribs). Elderly patients presenting with new back pain or paresthesia (spinal cord compression) should be screened for prostate cancer.

• Screening and PSA:     * PSA Velocity: The rate of change is more important than a single value. A rapid jump (e.g., $2$ to $5$ in months) is more likely infection; cancer rises slowly.     * PSA Modifiers: Infection, DRE, or trauma can falsely elevate PSA. 5-alpha reductase inhibitors cut PSA levels in half; clinicians must double the lab value to get the true reading.     * PI-RADS Scoring (MRI): $1\text{--}5$ scale. Anything $3$ or above requires a biopsy.

• Biopsy (Gleason Score):     * A needle biopsy typically takes $12\text{--}24$ cores randomly, as cancer is not always visible on ultrasound (unlike breast cancer which uses targeted biopsies).     * Gleason Score: Two numbers added together representing the most common and second most common cell patterns. Lower scores are less aggressive.

• Staging and Treatment:     * Staging: Bone scan and CT identify metastasis.     * Watchful Waiting: Suitable for older men or low-grade disease.     * Radical Prostatectomy: Removal of the gland; now often done robotically.     * Hormonal Therapy (Androgen Deprivation): Decreases testosterone. Options include expensive injections ($\approx \$1000$) or Orchiectomy (testicle removal) for those without insurance.     * Radiation (External Beam or Brachytherapy): Side effects include proctitis (rectal bleeding/inflammation) due to the proximity of the rectum to the prostate.

Questions & Discussion

• Q: Does prostate enlargement affect the ejaculatory duct?     * A: No, usually just the urine flow via the urethra.

• Q: What is the normal size of a prostate?     * A: About $25\text{--}30\,g$ when you are in your 20s. It becomes hard to reach via DRE in some men (high-riding).

• Q: How do you handle a patient upset by a DRE?     * A: Always apologize first, regardless of clinical necessity. Explain the purpose, but respect their feelings. The speaker learned to specifically ask, "May I perform a rectal exam?" before proceeding.

• Q: How do you deliver a cancer diagnosis?     * A: It is a skill involving compassion and empathy. "Buffer" the bad news by immediately discussing treatment options. Deliver results in person; avoid results through portals where patients may see "cancer" without context.

• Q: What is the role of diet?     * A: Plant-based diets are emerging in research as helpful supplements to traditional medical therapy in managing cancer.