Clinical suffixes in Latin

Suffix -osis: pathologies, infections, and accumulations

The suffix -osis has a very broad range of meanings in clinical terminology. In most cases, it is added to stems to describe various non-inflammatory pathological processes.

• Diseases caused by substances. The term toxicosis comes from the Greek word meaning poison and describes a disease caused by toxic agents.
• Accumulation of substances and metabolic disorders. If iron salts are deposited in tissues, this is called siderosis. Similarly, the term amyloidosis is formed, denoting the pathological deposition of amyloid.
• Infections and parasitic infestations. The suffix often indicates the causative agent of a disease. Thus, ascaridosis is a helminthic infestation caused by ascarids, and actinomycosis is a chronic infection caused by ray fungi (Actinomyces).

Special cases: when the root of the word denotes a blood cell or a tumor, the meaning of the suffix transforms. It begins to indicate an increase in number, multiplicity, or pathological spread. Striking examples are leucocytosis (an increase in the number of leukocytes in peripheral blood) and fibromatosis (the emergence of multiple fibromas).

Suffix -itis: inflammatory processes

The suffix -itis has traditionally, since the eighteenth century, been established in medicine to denote diseases of an inflammatory nature. The motivating stem here is almost always the Greek (and much less frequently Latin) names of specific tissues or anatomical organs.

Classical examples include diagnoses such as gastritis (an inflammatory process in the gastric mucosa) or nephritis (inflammation of the renal tissue).

From a grammatical standpoint, all such clinical diagnoses are third-declension feminine nouns. It is extremely important to remember their form in the genitive singular (Genetivus singularis), where they acquire the characteristic ending -itĭdis.

• bronchitis (bronchitis) changes in the genitive case to bronchitĭdis.
• meningitis (meningitis) transforms into meningitĭdis.

Suffix -oma: neoplasms

In clinical practice, the suffix -oma serves as the main marker of tumor diseases. Terms are constructed by attaching this suffix to stems denoting the type of tissue from which the neoplasm is formed. For example, fibroma is a benign tumor growing from fibrous connective tissue, and osteoma is a benign lesion of bone tissue.

Grammatically, tumor names belong to third-declension neuter nouns. Their distinguishing feature is the ending -ătis in the genitive singular (for example, osteoma — osteomătis, fibroma — fibromătis, where the stem is fibromat-).

One should remember the historically established traditional names of malignant tumors, which do not always directly indicate the tissue in the suffix itself:

1. Carcinoma — a cancerous tumor originating exclusively from epithelial tissue.
2. Sarcoma — a malignant neoplasm of mesenchymal origin.

Note: In Ancient Greek, this suffix simply denoted the "result of an action." Hence come some general terms (e.g., symptoma) and the names of a number of ophthalmological conditions that are not tumors: glaucoma, trachoma, and scotoma (a visual field defect).

Suffix -ismus: conditions and phenomena

The suffix -ismus forms nouns describing a certain pathological condition, phenomenon, or fact characterized by the motivating stem.

Key examples from medical terminology:

• Infantilismus — a pathological condition characterized by delayed development with the preservation of childhood traits.
• Strabismus — strabismus.
• Alcoholismus — alcoholism.
• Virilismus — a group of syndromes in women characterized by the manifestation of male traits.
• Daltonismus — the inability to correctly distinguish colors (formed from the scientist's surname).

Class and exam questions

What else to study on this topic

• Synonyms for the concept of "tumor" (tumor, blastoma, neoplasma, onco-)
• Eye diseases with the suffix -oma (glaucoma, trachoma, scotoma)
• Morphological differences between carcinoma and sarcoma
• Terms in -ismus of eponymic origin (using daltonismus as an example)

Other topics in the section "Single CFs: properties, qualities (table)"

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