A benign (non-cancerous) tumor made of cartilage tissue that grows slowly and usually doesn't cause serious harm.
From Greek 'chondros' (cartilage) + 'oma' (tumor or swelling). The suffix '-oma' was commonly used in medical terminology from ancient Greek medical texts to denote abnormal growths.
Interestingly, chondromas are so common in bones that many people have them without ever knowing—they're often found by accident on X-rays taken for other reasons, like a twisted ankle.
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