10 results
Tree-in-Bud Sign on Chest CT
 • Multiple centrilobular nodules arranged in a linear branching pattern.
 •
Tree-in-Bud Sign ... on Chest CT • ... linear branching pattern ... • DDx: NTM, atypical ... #CT #Lung #Pulmonary
Abnormalities in Rate and Rhythm of Breathing 
Normal 
The respiratory rate is about 14—20 per min
including restrictive lung ... In lung disease ... #Breathing #Patterns ... #Pulmonary #Abnormalities ... Abnormal #Diagnosis #PhysicalExam
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Cause Many Illnesses ... Advanced HIV (CD4 ... • Dyspnea, • Chest ... Imaging, high res CT ... #Infections #differential
Etiologies of pulmonary infections according to CT-scan patterns. 
CMV cytomegalovirus, GM galactomannan, HSV herpes simplex virus,
patterns. ... galactomannan, HSV ... #Patterns #Pulmonary ... #Lung #Infections ... ComputedTomography #Differential
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
Miliary Pattern ... throughout the lungs ... Tuberculosis, NTB ... diagnosis #pulmonary ... CXR #clinical #CT
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Infection: TB, NTM ... in the adjacent lung ... CT) • Broncho-arterial ... , CCP, ANCA • HIV ... #differential #
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
in HIV-AIDS Bacterial ... M.tuberculosis, NTM ... failure, COPD, Lung ... CXR +/- High res CT ... diagnosis #evaluation #differential
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
• Most common cause ... CT Lung Abscess ... Abscess Differential ... #Abscess #pulmonary ... #differential #
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
in HIV - Differential ... • CT: Halo sign ... factor • May cause ... #AIDS #pulmonary ... #differential #
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Other tests: • CT ... Goodpasture's cause ... sparing of the lung ... CT ... • IF staining patterns