9 results
Radiographic appearances of pulmonary diseases in HIV/AIDS Patients
 • Diffuse Interstitial Infiltrates: Pneumocystis jirovecii, M.tuberculosis, Histoplasma
diseases in HIV/AIDS ... toxicity, Pulmonary edema ... ; ARDS, Metastatic ... disease, Pulmonary alveolar ... #chestCT #radiology
ARDS/VALI progression over the course of 1 week 
 (a) Day 1 - No pathological findings.
ARDS/VALI progression ... involvement, with “white lung ... the differential diagnosis ... #Clinical #Radiology ... CXR #ChestXRay #ARDS
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
: Atelectasis, ARDS ... Mismatch: Pulmonary Edema ... , Interstitial Lung ... UnremarkableLab #AA ... #differential #diagnosis
Notice that even within each lobe there is a gravity dependent difference in density.
This is only
capillary leak like in ARDS ... #Clinical #Radiology ... #CTChest #CHF # ... Alveolar #Pulmonary ... #Edema #AlveolarEdema
Crazy Paving on Chest CT
 • Thickened interlobular septa in a background of diffuse GGO's.
 •
DDx: PAP, pulm edema ... pna, pulm hge, ARDS ... Paving #Sign #CT #Lung ... #Pulmonary #diagnosis ... #radiology #clinical
Heart failure with Reduced Ejection Fraction (HFrEF)
Clinical Presentation
1. Typical symptoms: dyspnea, orthopnea paroxysmal noctumal dyspnea, fatigue,
Fraction (HFrEF) Clinical ... : weight gain, lung ... HFrEF may lack lung ... Chest x-ray: signs ... Kerley B lines, alveolar
CT will also demonstrate signs of congestive heart failure.
On the image on the left notice the
dependent part of the lungs ... the differential diagnostic ... presentation of alveolar ... #Clinical #Radiology ... #CTChest #CHF #
Acute interstitial pneumonia (AIP, earlier named Hamman Rich Pneumonitis) is a rare idiopathic lung disease characterized
rare idiopathic lung ... characterized by diffuse alveolar ... distress syndrome (ARDS ... #Clinical #Radiology ... #CTChest #AIP #
Preoperative Risk Evaluation

Major Pre-Op Questions:
1. Does the patient have any modifiable risk factors that could be
Highest metabolic equivalent ... disease b) CHF ... Change in clinical ... unless prior heart/lung ... stratification #diagnosis