Male genital problems

1. THE 2-MINUTE PHYSIOLOGY (Rapid Pathophysiology)

• Testicular Torsion: An acute twisting of the spermatic cord that halts venous and arterial flow, rapidly leading to testicular ischemia and necrosis.
• Priapism: Ischemic priapism acts as an acute compartment syndrome of the penis. Venous outflow from the corpora cavernosa is obstructed, trapping deoxygenated blood, which causes severe pain and risks irreversible fibrosis.
• Paraphimosis: The retracted foreskin becomes trapped behind the coronal sulcus of the glans penis, creating a mechanical tourniquet effect. This impairs venous and lymphatic drainage, leading to severe engorgement and potential necrosis of the glans.
• Fournier’s Gangrene: A rapidly progressive, polymicrobial necrotizing fasciitis of the perineal, genital, and perianal fascial planes that leads to systemic sepsis and soft tissue destruction.

2. THE BEDSIDE ACTION PLAN (Rapid ER Management)

• Testicular Torsion: Time is tissue. Aim to diagnose and intervene within <6 hours of symptom onset to achieve a 97% testicular salvage rate. Manual detorsion can be attempted simultaneously while preparing for operative intervention.
• Ischemic Priapism:
• Administer local analgesia (e.g., dorsal penile nerve block).
• Perform immediate aspiration of the corpora cavernosa using a needle and three-way stopcock, followed by irrigation.
• Inject an $\alpha$-adrenergic agent, such as phenylephrine, directly into the corpora cavernosa to induce vasoconstriction and detumescence.
• Paraphimosis Reduction: Apply manual compression to the distal penis to decrease edema, then manually reduce the glans back through the constricting phimotic ring. If manual reduction fails, use osmotic agents (sugar), hyaluronidase, or perform a surgical dorsal slit.
• Fournier’s Gangrene: Initiate aggressive IV fluid resuscitation and immediately administer broad-spectrum antibiotics covering gram-positive, gram-negative, and anaerobic organisms. Obtain early, emergent surgical consultation for debridement.

3. THE DIAGNOSTIC GRID (Differential Diagnosis & Workup)

• "Can't-Miss" Differential Diagnoses:
• Abdominal Aortic Aneurysm (AAA) or Strangulated Inguinal Hernia: Both vascular and bowel catastrophes can present atypically with isolated scrotal pain.
• Testicular Tumor: The most frequent misdiagnosis for patients presenting with suspected epididymitis.
• Prioritized Diagnostic Workup:
• Scrotal Ultrasound with Doppler: The gold standard to differentiate torsion (decreased/absent blood flow) from epididymitis/orchitis (increased blood flow).
• Urinalysis: Use to evaluate for concurrent urinary tract infections; however, the absence of pyuria or bacteriuria does not exclude epididymitis or torsion.
• Lactate & Sepsis Labs: Mandatory for any patient with perineal erythema or pain out of proportion to evaluate for Fournier's gangrene.

4. THE VISUAL BOARD (ECG / POCUS / Imaging)

• Point-of-Care Ultrasound (POCUS) - Color Doppler: For torsion, explicitly look for the absence of color flow to the affected testicle. For epididymitis, expect to see an enlarged epididymis (often twice the width of the contralateral side) with greatly increased vascular flow.
• POCUS - Scrotal Trauma: Look for a large, heterogeneous testicle with areas of acute hemorrhage and a visible fracture line extending through the testicular parenchyma and capsule.
• Computed Tomography (CT): A CT scan of the pelvis and perineum can delineate the depth and extent of Fournier's gangrene, but obtaining this imaging must never delay emergent surgical debridement.

5. THE SCORING MATRIX (Risk Stratification & Guidelines)

• Phimosis vs. Paraphimosis Triage Rules: Phimosis (inability to retract the foreskin) is generally physiologic (89% resolve by age 3) and is not an emergency as long as the patient can urinate. Paraphimosis is always an emergency requiring emergent reduction.
• Urologic Consultation Criteria: Emergent consultation with urology is mandated for paraphimosis when manual reduction fails, or when signs of necrosis or urinary outflow obstruction are present.
• The 6-Hour Rule: The salvage rate for testicular torsion is 97% if detorsion is achieved within 6 hours of symptom onset, dropping significantly thereafter.

6. THE DANGER ZONE (Pitfalls & Critical Actions)

• Cognitive Trap (Anchoring on Location): Up to 31% of testicular torsion cases present primarily with abdominal pain, not testicular pain. Failing to perform a genital examination on a male patient with lower abdominal pain, nausea, and vomiting is a classic medical error.
• Cognitive Trap (Delaying Surgery for Imaging): Sending an unstable patient with suspected Fournier's gangrene to the CT scanner.
• Cognitive Trap (The "Clean" Urine): Relying on a normal urinalysis to rule out epididymitis. The absence of pyuria or bacteriuria does not exclude the diagnosis.
• Critical Action: Always evaluate older men presenting with epididymitis for underlying urinary retention, as this is a frequent precipitating cause.

7. MCQ MASTERCLASS (Written Exam Tips)

• Buzzwords:
• "Bell-clapper deformity" = Testicular torsion (testicle lying in a horizontal plane).
• "Prehn sign" = Epididymitis (elevation of the affected hemiscrotum provides relief of symptoms).
• "Eggplant deformity" = Penile fracture.
• "Crepitus" with "pain out of proportion" = Fournier's gangrene.
• Classic Distractor: A board question will present a patient with a prolonged, painful erection and a history of sickle cell anemia, offering "observation" or "warm compresses" as options. Correction: This is ischemic priapism, an acute compartment syndrome. The correct answer is aspiration of the corpora cavernosa and injection of phenylephrine.
• Classic Distractor: Confusing the definitions of foreskin emergencies. Phimosis causes a "balloon appearance" with urination but is rarely an acute emergency. Paraphimosis is the constricting tourniquet behind the glans requiring emergent reduction.

8. THE BOARDROOM SCRIPT (OSCE & Oral Board Tips)

• The Initial Approach (The Acute Scrotum): "The patient presents with acute, sudden-onset testicular pain. My immediate priority is to rule out testicular torsion. I will perform a rapid genital examination looking for a bell-clapper deformity or high-riding testicle, and immediately order a stat scrotal ultrasound with Doppler. Given the 6-hour window for testicular salvage, I will contact urology contemporaneously."
• The Fournier’s Pivot: "On physical exam, I note perineal erythema, extreme tenderness out of proportion to the visual findings, and palpable crepitus. I am highly concerned for Fournier's gangrene. I will forgo CT imaging so as not to delay definitive care, begin aggressive fluid resuscitation, administer broad-spectrum IV antibiotics, and consult surgery immediately for operative debridement."
• The Priapism Procedure: "For this patient's ischemic priapism, I will provide analgesia via a dorsal penile nerve block. I will then use a large-bore needle and a three-way stopcock to aspirate the ischemic blood from the corpora cavernosa, irrigate the area, and inject phenylephrine to reverse the compartment syndrome."