| malignant catarrhal fever | A highly fatal, sporadic disease of cattle caused by alcelaphine herpesvirus 1 (a member of the Herpesviridae family) and characterised by inflammation, ulceration, and exudation of the oral and upper respiratory mucous membranes, and sometimes eye lesions and nervous system disturbances. Synonym: malignant catarrh of cattle. (05 Mar 2000) |
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| malignant catarrhal fever virus | A herpesvirus of wide distribution causing malignant catarrhal fever of cattle; sheep and wildebeests harbor inapparent infections and may transmit the virus to cattle. (05 Mar 2000) |
| catarrhal fever | Old term for the group of respiratory tract diseases including the common cold, influenza, and lobular and lobar pneumonia. (05 Mar 2000) |
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| malignant tertian fever | <infectious disease> A tropical parasitic disease caused by one of the genus Plasmodium and carried by infected mosquitoes of the genus Anopheles. This parasite uses red blood cells to complete its reproductive cycle. Common symptoms of an attack include high fever, chills, sweats and body aches. (27 Sep 1997) |
| acute catarrhal conjunctivitis | An obsolete term for conjunctivitis with marked hyperaemia and mucopurulent discharge, with a tendency toward spontaneous recovery. Synonym: mucopurulent conjunctivitis. (05 Mar 2000) |
| catarrhal | Relating to or affected with catarrh. (05 Mar 2000) |
| catarrhal asthma | Asthma precipitated by bronchitis. Synonym: catarrhal asthma. (05 Mar 2000) |
| catarrhal gastritis | Gastritis with excessive secretion of mucus. (05 Mar 2000) |
| catarrhal inflammation | An inflammatory process that is most frequent in the respiratory tract, but may occur in any mucous membrane, and is characterised by hyperaemia of the mucosal vessels, oedema of the interstitial tissue, enlargement of the secretory epithelial cells (which proliferate and form conspicuous globules of mucus), and an irregular layer of viscous, mucinous material on the surface; as exudation progresses, variable numbers of neutrophils migrate into the affected tissue and are included in the exudate, along with fragments of degenerated and necrotic epithelial cells; such an inflammation may frequently become mucopurulent. (05 Mar 2000) |
| catarrhal jaundice | An obsolete term for viral hepatitis type A. (05 Mar 2000) |
| catarrhal ophthalmia | A mild form of conjunctivitis with mucopurulent secretion. (05 Mar 2000) |
| cancer, malignant melanoma | A skin cancer that begins in cells called melanocytes that can grow together to form benign (not cancerous) moles. A change in size, shape, or colour of a mole can be a sign of melanoma. Melanoma can be cured if detected early, before spread (metastasis) to other areas of the body. Diagnosis is confirmed with a biopsy of the abnormal skin. Sun exposure can cause skin damage that can lead to melanoma. (12 Dec 1998) |
| canine malignant lymphoma | <tumour> A progressive fatal disease of dogs characterised by neoplastic transformation and proliferation of lymphoid cells, usually originating in solid lymphoid organs (lymphosarcoma) or bone marrow (lymphocytic leukaemia). (05 Mar 2000) |
| malignant | <oncology> Tending to become progressively worse and to result in death. Having the properties of anaplasia, invasion and metastasis, said of tumours. Origin: L. Malignans = acting maliciously (18 Nov 1997) |
| malignant anaemia | <haematology> A form of anaemia (low red blood cell counts) that results when the bone marrow fails to produce adequate numbers of red blood cells due to a deficiency in vitamin B12. Intrinsic factor, necessary for normal B12 absorption, may be the underlying cause for B12 deficiency if is not produced in the gastric glands (in the stomach). Origin: Gr. Haima = blood (27 Sep 1997) |
| malignant carcinoid syndrome | <syndrome> A symptom complex associated with carcinoid tumour and characterised by attacks of severe flushing of the skin, diarrhoeal watery stools, bronchoconstriction, sudden drops in blood pressure, oedema, and ascites. The carcinoid tumours are usually located in the gastrointestinal tract and metastasize to the liver. Symptoms are caused by tumour secretion of serotonin, prostaglandins, and other biologically active substances. Cardiac manifestations constitute carcinoid heart disease. (12 Dec 1998) |
| malignant catarrh | A herpes virus infection of cattle characterised by catarrhal inflammation of the upper respiratory and alimentary epithelia, keratoconjunctivitis, encephalitis and lymph node enlargement. Syn: bovine epitheliosis, snotsiekte. (12 Dec 1998) |