Urinary Disorders: Benign Prostatic Hyperplasia, Prostate Cancer, and Testicular Cancer

Urinary Disorders - Video Two Study Notes

Introduction

  • This video discusses:

    • Benign Prostatic Hyperplasia (BPH)

    • Prostate Cancer

    • Testicular Cancer

  • Focuses on male urinary disorders.

Benign Prostatic Hyperplasia (BPH)

  • Definition: BPH is the enlargement of the prostate gland.

    • Normal prostate size: approximately the size of a walnut.

    • Begins to grow around age 25.

    • Enlarged prostate pinches the urethra, interrupting urine flow.

Symptoms of BPH

  • Urinary frequency

  • Urgency

  • Hesitancy

  • Struggling to urinate

  • Incontinence (specifically overflow incontinence)

  • Post-void dribbling

  • Nocturia (frequent urination at night)

  • Diminished force of urine stream

  • Straining to urinate

  • Hematuria (blood in urine)

Diagnosis

  • Primarily based on symptoms.

  • Confirmed with:

    • Digital Rectal Examination (DRE): Allows palpation of the enlarged prostate.

    • Urinalysis: To rule out urinary tract infections.

    • Prostate Specific Antigen (PSA) Level:

    • A protein produced by the prostate gland that may serve as a tumor marker.

    • Important to note: Elevated PSA may indicate cancer but can also be raised due to infection; does not distinguish between cancer and BPH.

Treatment Options for BPH

  • Pharmacological Management:

    • Various medications used to mitigate symptoms.

    • Five Alpha Reductase Inhibitors:

    • Mechanism: Prevent conversion of testosterone to dihydrotestosterone (DHT), which stimulates prostate growth.

    • Result: Shrinks enlarged tissue, reducing urethra obstruction.

    • Side Effects:

      • Rash

      • Breast enlargement and tenderness

      • Reduced ejaculate volume

      • Decreased libido

      • Erectile dysfunction

    • Patients may experience better results with a combination of alpha blockers and five alpha reductase inhibitors, delaying clinical progression by up to 67%.

    • Alpha Adrenergic Blockers:

    • Mechanism: Relax the smooth muscle in the prostate, easing urethra constriction.

    • Side Effects:

      • Headaches

      • Nasal congestion

      • Dizziness

      • Drowsiness

      • Postural hypotension

      • Reflex tachycardia

      • Retrograde/delayed ejaculation

    • Required time for effects: 2 weeks to 4 months for symptom improvement.

    • If overactive bladder is present, anticholinergics (e.g., oxybutynin) can be included.

Surgical Options for BPH

  • Transurethral Resection of the Prostate (TURP):

    • Most common surgery for BPH.

    • Small cutting tool removes the inner prostate while leaving the outer layer intact.

    • Recovery: Risk of bleeding and infection; catheterization may be needed post-op.

    • Continuous bladder irrigation with saline: 2000-3000 mL to prevent clots.

  • Transurethral Incision of the Prostate (TIP):

    • For small to moderate prostate enlargement.

    • Small incisions relieve urethra compression without removing prostate tissue.

  • Open Prostatectomy:

    • Required for very large prostates or if complications arise (e.g., bladder stones).

    • Higher risk of complications includes incontinence and impotence.

  • Laser Surgery:

    • High energy lasers target and remove overgrown prostate tissue.

    • Immediate symptom relief, lower risk of adverse effects compared to TURP.

    • Suitable for patients on anticoagulants due to reduced bleeding risk.

Prostate Cancer

  • Overview:

    • A slow-growing cancer that typically arises in the peripheral region of the prostate, often asymptomatic until advanced.

    • Common metastasis sites: lymph nodes, bones, rectum, and bladder.

Symptoms of Prostate Cancer

  • Early stages often asymptomatic.

  • Advanced stages may present:

    • Similar urinary symptoms to BPH (difficulty urinating, weak urine stream).

  • Pain may be associated with advanced cases.

Diagnosis of Prostate Cancer

  • Controversial recommendations for screening:

    • Digital Rectal Exam (DRE): Recommended annually beginning at age 50 (age 45 for African American men and those with family history).

    • PSA Test: Gold standard; abnormal PSA levels prompt further investigation.

    • Serial PSA tests may provide more comprehensive information.

  • Prostate Biopsy: Takes small tissue samples for cancer analysis, performed under local anesthetic.

Treatment Options for Prostate Cancer

  • Chemotherapy:

    • Administered orally or via IV, varies from daily to every three to four months.

  • Radiation Therapy:

    • Non-surgical options include:

    • External Beam Radiation: Directs radiation at the tumor.

    • Brachytherapy: Involves implanting small radioactive pellets directly into the prostate, allowing for targeted therapy.

  • Ablative Hormone Therapy:

    • Used for metastatic cases to suppress testosterone, slowing tumor growth and providing symptom relief.

    • Neo-adjuvant Therapy: Shrinks prostate before other treatments like radiation.

  • Surgery:

    • Procedures may involve removal of the prostate and seminal vesicles, and possibly pelvic lymph nodes.

Testicular Cancer

  • Definition: Cancer that originates in the testicles.

  • Spread can occur through blood supply, sperm transport tubes, and lymphatic systems.

Symptoms of Testicular Cancer

  • Usually presents as a painless mass, although some report:

    • Pain, swelling, or hardness in the scrotum.

    • Discomfort may range from acute testicular pain to a dull ache in the scrotum.

    • Symptoms of metastasis may include:

    • Gastrointestinal symptoms.

    • Lumbar pain.

    • Gynecomastia (breast enlargement).

    • Respiratory symptoms (dyspnea, cough, hemoptysis).

Diagnosis of Testicular Cancer

  • Done through:

    • Physical assessment revealing swelling or masses.

    • Self-examination, ideally performed in a warm shower.

    • Ultrasound: Distinguished testicular cancer from infection, fluid collection, torsion, or hernia.

    • Lab Tests:

    • Detect tumor markers (e.g., alpha-fetoprotein, human chorionic gonadotropin).

Conclusion

  • Comprehensive knowledge of urinary disorders including BPH, prostate cancer, and testicular cancer is essential for diagnosis and treatment.

  • Follow recommended guidelines for screening and intervention to ensure early detection and effective management of these conditions.