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Radiology - Thoracic Facts
Facts in Thoracic Imaging
DDX: calcified lymph nodes
silicosis,TB, treated lymphoma, granulomatous- sarcoidosis, histoplasmosis,
Absent lung on V/Q
#1 cause, bronchogenic carcinoma
Left sided SVC drains into:
coronary sinus. Left SVC is a rare anomaly <0.5%, assoc: CHD, absent left brachiocephalic artery
Muscular band of heart tissue in the RIGHT ventricle. Used to ID right side on prenatal US.
Causes of pulmonary arterial hypertension
mitral stenosis, Eisenmenger, centrilobular emphysema, diffuse interstitial fibrosis, chronic PE, schistosomiasis
finding: central enlargement w/periph. pruning
Findings in pulmonary venous hypertension
redistribution / cephalization, Kerley B, peribronchial cuffing
"domed" aortic valve in cardiac MR
indirect sign of bicuspid valve (or at least aortic stenosis)
Causes of aortic stenosis
#1 congenital: bicuspid valve most common; #2 acquired: most common rheumatic heart disease
Isolated acute RUL edema
acute mitral regurgitation from MI
Left Atrial Pressures: 5-10 _____, 10-15 ______, 15-20 ________, >25 _______
Normal 5-10, Cephalization 10-15, Kerley Lines 15-20, Interstitial 20-25, Alveolar >25.
Alveoli development complete at what age?
8 years old.
Most common Pancoast tumor pathology?
Squamous cell carcinoma
Most common metastasis to the pericardium
ddx: melanoma, breast, colon
Hibernating myocardium. Contractility, FDG and Ammonia response
Contractility decreased. FDG same or increased. Ammonia decreased.