Short answer
Scrotal lumps triage by two questions, painful or painless, testicular or extratesticular, that route to completely different pathways: painless testicular lumps get prompt cancer-rule-out ultrasounds (testicular cancer is highly curable when caught early, with cure rates exceeding 95% for localized disease); painful swelling gets infection or torsion pathways; soft extratesticular lumps get routine urologic characterization.
Most lumps are benign; the evaluation exists to prove it quickly, because the malignant minority rewards speed enormously.
Continue with What to Ask a Urologist About STI Symptoms and Urethritis in Men: Symptoms and Evaluation for the directly connected guidance.
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See Tests & Prices →Lump inventory with distinguishing features
- Testicular tumors: painless, firm, fixed to the testicle, sometimes with heaviness or swelling change. Urgent workup, no watchful waiting.
- Epididymal cysts and spermatoceles: soft, smooth, clearly separate from the testicle body, transilluminating. Benign, observed unless symptomatic.
- Varicoceles: “bag-of-worms” venous tangle, worse standing, better lying down. Achy, fertility-relevant in some cases, urologically managed.
- Hydroceles: fluid collection transilluminating evenly, benign, treated if bothersome.
- Hernias: reducible groin-connected bulge worsening with strain or cough impulse. Surgical referral, not STI testing.
Infection contrasts that change routing
- Epididymitis and orchitis: painful, swollen, warm, often febrile, frequently discharge-associated. Infectious workup with NAAT and urinalysis.
- Abscess: fluctuant, severely tender, febrile. Drainage evaluation urgently.
- Fournier gangrene: rapid painful swelling with fever, crepitus (crackling tissue gas), systemic toxicity. Surgical emergency measured in hours, vanishingly rare but unforgettable.
- Torsion: sudden severe pain, not a lump presentation at all. But included because it tops every scrotal differential for urgency.
Pain plus systemic signs flips every lump pathway to infection or emergency tracks.
Self-exam technique that works
Monthly warm-shower rolling exams: each testicle gently rolled between thumb and fingers, noting size, consistency, and tenderness; the epididymis ridge felt posteriorly (first-timers frequently alarm at this normal structure. Learn its feel once and stop worrying).
Report changes, new firmness, growth, heaviness shifts, rather than self-diagnosing normality.
Familiarity is the whole method; five minutes monthly builds the baseline that makes changes obvious.
Evaluation sequence
Scrotal ultrasound first for lumps (solid versus cystic, vascularity patterns. Solid vascular intratesticular lesions escalate fastest).
Tumor markers (AFP, hCG, LDH) where malignancy is suspected.
STI and urinalysis workups for infectious patterns.
Urologic referral thresholds: any suspicious solid intratesticular lesion goes the same week, not next quarter.
When to seek care
Promptly, within days, for painless lumps (cancer rule-out without delay, the highest-yield urgency in scrotal medicine).
Same-day for painful swelling with infectious signs.
Emergency for sudden severe pain or rapidly progressive swelling with fever.