Understanding the Suffix '-oma' in Cancer Terminology

The suffix "-oma" means "tumor" or "mass" — not exclusively cancer.

Benign vs. Malignant

• Benign tumors end in -oma: Lipoma (fat), fibroma (fibrous), adenoma (glandular), osteoma (bone), chondroma (cartilage), hemangioma (blood vessels).
• Malignant tumors: Usually use specific suffixes: -carcinoma (epithelial origin), -sarcoma (mesenchymal origin), -blastoma (embryonic), -leukemia/lymphoma (hematopoietic).

Examples

Key Takeaway

-oma = tumor (neoplasm). Benign or malignant depends on prefix and context. Always confirm with pathology. "Carcinoma" = epithelial cancer; "sarcoma" = connective tissue cancer.

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Term	Meaning	Behavior
Adenoma	Glandular tumor	Benign
Adenocarcinoma	Malignant glandular tumor	Malignant
Chondroma	Cartilage tumor	Benign
Chondrosarcoma	Malignant cartilage tumor	Malignant
Melanoma	Melanocyte tumor	Malignant (exception: -oma but malignant)
Lymphoma	Lymphoid malignancy	Malignant
Glioblastoma	Astroglial malignancy (WHO grade 4)	Malignant