Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0729233 (Thoracic)
 6,478 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Malignant histiocytosis (MH) is a disease which clinically and histologically resembles non-Hodgkin lymphoma. Tumoural cells appear to be derived from histiomonocytes. Clinical signs commonly include: high fever, sudden onset of extreme fatigue, diffuse painful polyadenopathies and infiltrated cutaneous nodules. This study involved the radiological findings of 23 pediatric cases of MH. Thoracic involvement is very frequent (69%) and most often involves mediastinal lymph nodes. Interstitial (34%) and pleural (38%) lesions are often associated. Nine of 21 (42%) lymphographies showed pathologic changes, the most frequent pattern in retroperitoneal nodes was multilacunar and nodes were moderately enlarged. Some isolated lymph nodes were normal. Bone lesions were rare and were either lytic or sclerotic.
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PMID:Radiological findings in 23 pediatric cases of malignant histiocytosis (MH). 684 Jan 8

Malignant histiocytosis (MH) was diagnosed in a 13-year-old neutered male Domestic Shorthair cat on the basis of light microscopic and immunohistochemical findings. Thoracic fluid analysis showed a modified transudate which contained a very few atypical discrete cells. Cytologic and histologic evaluation of mediastinal and splenic masses revealed a pleomorphic population of large, discrete, round cells 10 to 30 micrometers in diameter with marked cellular atypia. Nuclei were oval to reniform, often with prominent, bizarre nucleoli. Multinucleated cells and mitotic figures were commonly seen. Erythro- and leucocytophagia were noted. Immunohistochemistry indicated a scattered positive staining pattern with the histiocytic antigenic marker Mac387 and a minor population of cells showing positive reactivity for lysozyme. This report describes the characterization of MH in a cat and emphasizes that MH should be considered as a differential diagnosis in proliferative disorders of discrete-cells in this species.
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PMID:Malignant histiocytosis in a domestic cat: cytomorphologic and immunohistochemical features. 1265 95