141 results
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
Interstitial Lung ... Bird fanciers' lung ... polyangiitis, Eosinophilic ... syndrome) • Eosinophilic ... #diagnosis #differential
Eosinophilia - Differential Diagnosis Algorithm
Idiopathic Eosinophilia
Primary Eosinophilia:
 • Primary hypereosinophilic syndrome
 • Eosinophilic Leukemia
 • MPN/MDS
Diagnosis Algorithm ... Primary Eosinophilia ... GI, lung, skin), ... IBD Stanford Internal ... #Differential #Diagnosis
Approach to Eosinophilic Lung Diseases
 • Acute Eosinophilic Pneumonia (< 1 wk) - ~30yo, M; Recent
Lung Diseases ... • Acute Eosinophilic ... Respiratory sx in 40%, mild ... #Lung #Diseases ... #differential #diagnosis
Cough - Diagnostic Schema

Infectious: URTI, LRTI, Bacterial, Viral
Irritant/Exposure: Allergic, Post-infectious, Pneumonitis, ACEi, PTX, Foreign Body
Airway Disease:
Cough - Diagnostic ... Autoimmune Vasculitis, ILD ... Malignancy: Lung ... mycobacterial), Eosinophilic ... Ndouthit #Cough #Diagnosis
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
can suggest the diagnosis ... densities iin the left lung ... cavitation in the right lung ... #Clinical #Radiology ... #CXR #CTChest #
Feeding Vessel Sign on Chest CT
 • Distinct pulmonary vessel leading into a lung nodule or
Vessel Sign on Chest ... leading into a lung ... doi.org/10.1016/j.chest ... #Pulmonary #diagnosis ... #radiology #clinical
Halo Sign on Chest CT
 • SPN or mass surrounded by a circumferential GGO
 • DDx:
Halo Sign on Chest ... sarcoidosis, mets to the lung ... Halo #Sign #CT #Lung ... #Pulmonary #diagnosis ... #radiology #clinical
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
densities in both lungs ... the differential diagnosis ... There was no eosinophilia ... which excludes eosinophilic ... #Clinical #Radiology
Katayama Fever - Physical examination and diagnostic testing revealed multiple small papules on the trunk (Panel
examination and diagnostic ... values, and several ill-defined ... infiltrates on the chest ... #Clinical #Radiology ... KatayamaFever #Rash #NEJM
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
19 Patterns of Lung ... Findings on Chest ... COVID19 #Patterns #Lung ... Pulmonary #ChestCT #radiology ... #CTChest #diagnosis