Cyst vs. Polyp: Key Differences, Causes & When to Seek Medical Help
A cyst is a closed, fluid-filled sac that forms beneath the skin or inside organs; a polyp is a small, fleshy growth that projects from a mucous membrane lining the colon, nose, or uterus.
People often confuse the two because both are “lumps” found during scans or scopes, yet they differ in texture and risk: cysts feel squishy and are usually benign, while polyps look like tiny mushrooms and can turn cancerous if left unchecked.
Key Differences
Cysts are smooth sacs filled with fluid, air, or debris; polyps are solid tissue overgrowths. Cysts rarely bleed; polyps often do. Polyps warrant quicker removal, especially in the colon.
Which One Should You Choose?
You don’t choose—you discover. If you feel a painless lump under the skin, suspect a cyst. If your doctor finds growths during a colonoscopy or nasal scope, those are polyps and need removal or biopsy.
Can a cyst turn into cancer?
Most remain benign; only complex or enlarging cysts need imaging and possible removal.
Do all polyps need surgery?
No, but larger or precancerous ones are snared during colonoscopy to prevent malignancy.