| midline malignant reticulosis granuloma | Destruction of the nasal septum, hard palate, lateral nasal walls, paranasal sinuses, skin of the face, orbit and nasopharynx by an inflammatory infiltrate with atypical lymphocytic and histiocytic cells; presumably a form of lymphoma in most cases. An obsolete term for polymorphic reticulosis. Synonym: granuloma gangrenescens, malignant granuloma, midline malignant reticulosis granuloma. (05 Mar 2000) |
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| mixed tumour, malignant | A malignant tumour composed of more than one type of neoplastic tissue. (12 Dec 1998) |
| pleural effusion, malignant | Presence of fluid in the pleural cavity as a complication of malignant disease. Malignant pleural effusions often contain actual malignant cells. (12 Dec 1998) |
| histiocytic disorders, malignant | Distinctive neoplastic disorders of histiocytes. Included are acute monocytic leukaemias, malignant histiocytosis (histiocytosis, malignant), and true histiocytic lymphomas. (12 Dec 1998) |
| histiocytosis, malignant | A rare, usually rapidly progressive disorder, characterised by abrupt onset, fever, weight loss, hepato-splenomegaly, pancytopenia, and lymphadenopathy. (12 Dec 1998) |
| hypertension, malignant | Severe hypertension characterised by papilledema and necrosis of small arteries and arterioles. The diastolic pressure is generally greater than 130 mm hg. (12 Dec 1998) |
| neuroleptic malignant syndrome | <syndrome> This describes the combination of catatonic rigidity, stupor, unstable blood pressure, fever, profuse sweating, sweating and incontinence as a reaction to antipsychotic agents (phenothiazines) in therapeutic doses. Origin: Gr. Lepsis = a taking hold (27 Sep 1997) |
| desmoplastic malignant melanoma | <tumour> A melanoma with marked fibrosis surrounding atypical spindle-shaped melanocytes in the dermis. (05 Mar 2000) |
| low malignant potential tumour | A neoplasm of the ovary, usually arising in young women, composed of complex epithelial hyperplasia without stromas invasion; may recur if incompletely removed surgically, but is clinically less aggressive than carcinoma. Synonym: low malignant potential tumour. (05 Mar 2000) |