Lump vs. Bruise: Understanding the Difference

No, a lump and a bruise are distinct entities.

Lump (Mass/Swelling)

• Palpable, discrete 3D structure.
• Can be solid (lipoma, cyst, lymph node, tumor) or fluid-filled (abscess, hematoma, ganglion).
• May be mobile or fixed; tender or painless.
• Persists until resolved/treated.

Bruise (Contusion/Ecchymosis)

• Flat or slightly raised area of skin discoloration.
• Caused by trauma rupturing capillaries → blood extravasation into tissues.
• Color evolution: red/blue → purple → green/yellow → brown (over 1–3 weeks).
• Resolves spontaneously as hemoglobin degrades.
• Typically tender initially.

Key Distinction

A hematoma is a localized blood collection that can feel like a firm lump and show bruising. Any new, persistent, growing, or unexplained lump should be evaluated clinically (ultrasound, biopsy if indicated).