Classification + Tumors and cell origin Cell origin Cell type Tumor Endodermal Biliary tree Cholangioma Colon Colonic polyp Glandular Adenoma Papilloma Cystadenoma Liver Liver cell adenoma Placental Hydatiform mole Renal Renal tubular adenoma Squamous Squamous cell papilloma Stomach Gastric polyp Mesenchymal Blood vessel Hemangioma, Cardiac myxoma Bone Osteoma Cartilage Chondroma Fat tissue Lipoma Fibrous tissue Fibroma Lymphatic vessel Lymphangioma Smooth muscle Leiomyoma Striated muscle Rhabdomyoma Ectodermal Glia Astrocytoma, Schwannoma Melanocytes Nevus Meninges Meningioma Nerve cells Ganglioneuroma Reference<unk>  neoplasms are typically but not always composed of cells which bear a strong resemblance to a normal cell type in their organ of origin. These tumors are named for the cell or tissue type from which they originate, followed by the suffix "-oma" (but not -carcinoma, -sarcoma, or -blastoma, which are generally cancers). For example, a lipoma is a common<unk>  of fat cells (lipocytes), and a chondroma is a<unk>  of cartilage-forming cells (chondrocytes). Adenomas are<unk> s of gland-forming cells, and are usually specified further by their cell or organ of origin, as in hepatic adenoma (a<unk>  of hepatocytes, or liver cells). Teratomas contain many cell types such as skin, nerve, brain and thyroid, among others, because they are derived from germ cells. Hamartomas are a group of<unk> s that have relatively normal cellular differentiation but the architecture of the tissue is disorganised. There are a few cancers with<unk> -sounding' names which have been retained for historical reasons, including melanoma (a cancer of pigmented skin cells, or melanocytes) and seminoma (a cancer of male reproductive cells). Skin tags, vocal chord polyps and hyperplastic polyps of the colon are often referred to as<unk>  but they are actually overgrowths of normal tissue rather than neoplasms.
Benign tumor
Vascular tumor
Degenerative disease
Viral disease
Mixed tumor
Cartilage tumor
Precancerous condition
Psychogenic disease