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LYMPHOCYTIC INFILTRATES are the USUAL pattern of ALL myocarditis, buteosinophils, giant cells, and even trypanosomes can be seen occasionally
OTHER Myocarditides
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OTHER Myocarditides Adriamycin Cyclophosphamide Catecholamines (Pheochromocytomas)
Amyloid, systemic or primary cardiac Congo red stain: green birefringence withpolarization
Amyloid, aging
Congo red stain: green birefringence withpolarization Hemochromatosis (Prussian Blue) BOTH HYPER-, HYPO- -thyroidism
PERICARDIUM
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PERICARDIUM Normally 30-50 ml clear serous fluid
Visceral (epicardium) Parietal (Fibrous pericardium)
PERICARDIAL EFFUSIONS TAMPONADE Ruptured MI
Traumatic perforation Ruptured aortic dissection
PERICARDITIS
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PERICARDITIS SEROUS : Rheum. Fever (RF), SLE,
scleroderma, tumors, uremia FIBRINOUS : MI (Dressler), uremia, radiation,
RF, SLE, s/p open heart surgery PURULENT : infective, bacterial HEMORRHAGIC : Malignancy, TB
CASEOUS : TB CHRONIC : (ADHESIVE, CONSTRICTIVE)
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TUMORS
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TUMORS 90 % benign mesenchymal, i.e., stromal
MYXOMAS (LEFT ATRIUM MOSTCOMMON)
FIBROMAS LIPOMAS FIBROELASTOMAS (valvular, usually papillary)
RHABDOMYOMA (Most common cardiac tumor inchildren) 10% SARCOMAS
MYXOMA
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MYXOMA
Cardiac effects of NON-cardiac tumors
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Direc t Cons equ enc es o f Tum or Pericardial and myocardial metastases Large vessel obstruction Pulmonary tumor emboli
Ind i rec t Cons equ enc es o f Tum or (Com pl ica t ions o f Ci rcu la t ing Media tors) Nonbacterial thrombotic endocarditis (Trousseau) (NBTE) Carcinoid heart disease Pheochromocytoma-associated heart disease
Myeloma-associated amyloidosis Effec ts o f Tum or Therapy Chemotherapy Radiation therapy
CARDIAC TRANSPLANTO OG
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PATHOLOGY Most patients are on
immunosuppressives 5 year survival >60%
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