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-oma (singular), -omata (plural) tumor, mass, fluid collection Greek -μα (-ma), suffix added to verbs to form nouns indicating the result of a process or action; cf. English -tion: sarcoma, teratoma, mesothelioma: omphal(o)-of or pertaining to the navel, the umbilicus: Greek ὀμφαλός (omphalós), navel, belly-button omphalotomy: onco-
The suffix "-oma" (but not -carcinoma, -sarcoma, or -blastoma, which are generally cancers) is applied to indicate a benign tumor. For example, a lipoma is a common benign tumor of fat cells ( lipocytes ), and a chondroma is a benign tumor of cartilage-forming cells ( chondrocytes ).
The term is from Latin grānulum 'small grain' and -oma, a suffix used to indicate tumors or masses. The plural is granulomas or granulomata. The adjective granulomatous means "characterized by granulomas".
The term comes from the Greek word for "monster" [15] plus the "-oma" suffix used for tumors. Teratomas can cause an autoimmune illness called Anti-NMDA receptor encephalitis. In this condition, the teratomas may contain B cells with NMDA-receptor specificities. [16]
Leiomyoma enucleated from a uterus. External surface on left; cut surface on right. Micrograph of a small, well-circumscribed colonic leiomyoma arising from the muscularis mucosae and showing fascicles of spindle cells with eosinophilic cytoplasm and elongated, cigar-shaped nuclei Immunohistochemistry for β-catenin in uterine leiomyoma, which is negative as there is only staining of cytoplasm ...
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The stem neuro-originates from the Greek word for nerve (νεῦρον), while the suffix -oma (-ωμα) denotes swelling. [7] The stem does not imply that neuromas necessarily arise from neurons; neuromas generally arise from non-neuronal nerve tissues. The word was originally used to refer to any nerve tumor, but its meaning has evolved. [7]
It is directly derived from Latin: serosus, meaning "watery fluid, whey". [citation needed] It was joined with a word-forming element from Greek: oma, with -o-, lengthened stem vowel + -ma suffix, especially taken in medical use as "tumor" or "morbid growth". [citation needed]