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8 Cards in this Set
- Front
- Back
classic finding of throacic actinomycosis
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bacterial pna that crosses nml anatomic barriers (fissures, pleura, chest wall)
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spread of actinomycosis
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starts in mouth and spreads to chest and ab/pelvis via direct extension, swallowing, or aspiration
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ddx for miliary appearance of pulmonary nodules
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tb
histo cryptococcus lymphoma mets sarcoid |
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4 descriptive terms used for aneurysm
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true - media is weak
false - adventitia intact, occurs from bv rupture and hematoma contained by false lumen saccular - affects 1 side of bv fusiform - involves circumference of bv |
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pathology of mature teratoma
location |
derived from more than 1 type of embryonic germ cell, usually fluid filled. fat and calcs usually seen ~85% (fat in ant mediastinal cycstic mass is pathognomonic)
can be seen anywhere from throacic inlet to cardiophrenic angle |
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ddx for anterior mediastinal mass with cystic components
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thymic cyst
cystic thymoma pericardial cyst |
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crazy paving:
describe it when is it seen |
GG opacities with linear opacities superimposed
there is nml lung parenchyma interspersed seen in pulmonary alveolar proteinosis (whihc is usually idiopathic, but can sometimes be associated with silicosis) |
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ddx for crazy paving
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bronchoalveolar ca
lipoid pna |