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Query: UMLS:C0027121 (myositis)
 4,538 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

An immature neonate surviving for 45 minutes showed a generalized hydrops and hepatosplenomegaly unassociated with blood incompatibility. A marked activation of extramedullary haematopoiesis was observed not only in its liver and spleen, but also in the interstitium of the lungs, pancreas, kidneys, and adrenal glands. In addition, extensive necrosis of the brain and diffuse nonsuppurative myositis and myocarditis were found. All the changes were due to congenital toxoplasmosis, which has been confrimed by the findings of occasional pseudocysts within the placenta, by the result of the parasitologic examination of the brain of the autopsied infant and by serological examination of the mother post partum.
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PMID:[Congenital toxoplasmosis with activation of extramedullary hematopoiesis in a premature infant]. 5 26

The ultrastructure of dermal connective tissue in two patients suffering from fibrodysplasia ossificans progressiva (syn myositis o.p.) was studied. The disorder starts with soft tissue swelling which subsequently ossify. The connective tissue of various organs may be affected. No defects in calcium metabolism have been discovered. It was intended to study the primary event which initiates the ossification. The present ultrastructural study demonstrates an accumulation of proteoglycan microfibrils as well as glycoprotein material in dermal connective tissue. Both substances are prerequisites of calcification resulting from the binding of calcium and phosphorus ions. A subsequent release of proteolytic enzymes in the tissues may be set free the bound iones and, thus, initiate mineralization.
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PMID:Ultrastructure of dermal connective tissue in fibrodysplasia ossificians progressiva. 7 20

Naturally occurring bovine sarcocystosis caused death and illness in eight dairy heifers. Clinical disease was characterized by cachexia, peripheral lymph node enlargement, and anemia. Increased amounts of serum enzymes and anti-Sarcocystis antibody titers were present in affected animal. Macroscopic findings in two heifers at necropsy included emaciation and serous atrophy. Necropsied heifers (No. 1 and 2) contained different developmental stages of Sarcocystis cruzi; each stage was characterized by specific histopathologic findings. Heifer 1 had vascular endothelial schizonts in various soft tissues, with mild mononuclear cell infiltration, alveolar capillary fibrinous thrombi, and multifocal splenic necrosis. Heifer 2 had developing young S cruzi cysts, in myofibrils of cardiac and skeletal muscles, with a concurrent multifocal degenerative myositis. Marked lymphoid hyperplasia occurred in both heifers.
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PMID:Bovine saccocystosis: patholgic features of naturally occurring infection with Sarcocystis cruzi. 11 89

Two cases of the so-called fascial analogue of myositis proliferans were investigated by histological and electron microscopic methods. It was found that the structure of the fascial variant corresponds almost completely to the true myositis proliferans localized within the musculature. The electron microscopic observations show a preponderantly histiocytic differentiation of the cells and strongly activated proliferating capillaries, and exclude a myogenic origin of the characteristic ganglion-like giant cells. Ultrastructurally a traumatic genesis appears possibly, the cells of the lesion could derive from multipotent cells of the microvasculature. The relations to myositis ossificans and fascitis nodularis are discussed.
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PMID:The subcutaneous fascial analogue of myositis proliferans: electron microscopic examination of two cases and comparison with myositis ossificans localisata. 12 92

A 28 year old patient complained of sensory disturbances and pain in the right upper arm during pregnancy. During the 32nd week of her pregnancy, a large painful mass developed in the flexor muscles which, radiographically, showed some calcification. A diagnosis of a parosseous sarcoma was made; biopsy, however, indicated a diagnosis of non-traumatic myositis ossificans. Since the histological appearances of active myositis may be vary difficult to distinguish from a juxtacortical sarcoma, a right brachial angiogram and scintiscan were obtained. The angiographic and scintigraphic findings were erroneously considered to suggest malignancy. Following delivery, the tumour was removed. Futher histology confirmed the diagnosis of localised, non-traumatic myositis ossificans. The value of radiology, biopsy, angiography and scintigraphy are discussed with reference to our experience.
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PMID:[Difficulties in the differential diagnosis of a non-traumatic, active myositis ossificans during pregnancy (author's transl)]. 13 67

The pathological features of 14 cases of human African trypanosomiasis (HAT) occurring in Uganda over an 8 year period are described. Three cases were clinically proven and in all 14 cases a chronic meningoencephalitis was found. In 2 cases there was histological evidence of ganglion radiculitis and in one of these chronic choroiditis and peripheral neuritis associated with chronic myositis were present. The cardiac lesions consisted of a chronic pancarditis of varying degree in 8 cases and in 3 a generalized valvulitis was observed. In 2 cases, specially investigated, generalized lesions of the conducting system were noticed. Previous histopathological descriptions of HAT are briefly reviewed. The present findings are compared with some of those recorded in human american trypanosomiasis and experimental African trypanosomiasis.
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PMID:Pathological aspects of human African trypanosomiasis (HAT) in Uganda. A post-mortem survey of fourteen cases. 14 May 6

Muscle changes were studied in biopsy material obtained from 100 patients suffering from classical rheumatoid arthritis. The abnormalities consisted of denervation atrophy of type II muscle fibres, degenerative changes in the sarcoplasm including presence of nemaline rods, and changes within the interstitium: namely perivascular nodular myositis, lymphocytic accumulations, different stages of vasculitis and abnormalities within the intramuscular nerves and muscle spindles. The muscles examined were always severely affected. It is considered that the simultaneous presence of these abnormalities is suggestive of rheumatoid arthritis. The importance of histochemical studies is emphasized. The literature concerning muscle changes in rheumatoid arthritis is reviewed.
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PMID:Muscle changes in rheumatoid arthritis. A review of the literature with a study of 100 cases. 14 May 7

It is contended in this report that the majority of pain syndromes involving the neck, shoulders, and low back are the result of a benign, reversible process in the musculature which is psychosomatic in nature and which has been called tension myositis. The natural history of the disorder, findings on physical examination, and diagnostic studies are briefly described. The theoretical basis for the conclusion that it is psychosomatic is discussed, the therapeutic program is described, and long-term results with a group of treated patients are presented. The results suggest that a program of physician counseling and physical therapy is generally successful. The author believes that the psychosomatic nature of the disorder places it within the purview of the behaviorally oriented specialty of family practice.
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PMID:Psychosomatic backache. 14 7

Idiopathic disseminated pulmonary ossification is a rarely recognised condition in which small pieces of marrow containing bone are found in the interstitial tissues of the lungs. The case reported here is unique in showing combination with myositis ossificans circumscripta. The extent of the lung changes was also unusual. The clinical, radiological and histological findings are compared.
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PMID:[Disseminated branching pulmonary ossification combined with heterotopic bone formation in the muscles (author's transl)]. 14 25

The clinical, pathological and radiological features and the differential diagnosis of the very rare condition of non-traumatic myositis ossificans circumscripta are illustrated by one patient. The characteristic radiological appearances make a correct diagnosis of this localised, non-malignant process possible.
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PMID:[Non-traumatic myositis ossificans circumscripta (author's transl)]. 15 Oct 51


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