21 results
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Miliary TB: random ... Sarcoidosis: nodules ... Sarcoidosis: nodules ... Diagnosis #Radiology #Pulmonary ... #Differential #Comparison
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
centrilobular nodules ... Miliary TB: random ... nodules 3. ... Sarcoidosis: nodules ... Nodular #Pattern #Comparison
Lung Nodules - Differential Diagnosis by Distribution
 • Centrilobular: Hypersensitivity Pneumonitis, RB-ILD, Pneumoconiosis, Infectious Bronchiolitis, Vasculitis,
Lung Nodules - Differential ... Perilymphatic: Sarcoidosis ... Infectious (viral, TB ... BrighamChiefs #Lung #Nodules ... #Distribution #pulmonary
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Sarcoidosis: nodules ... TB: Tree-in-bud ... patient with active TB ... Nodular #Pattern #Comparison
Sarcoidosis 
Non-caseating granulomas (Composed of T-helper & inflammatory cells) 
Clinical:
 • Disease fatal in 10% of
Sarcoidosis Non-caseating ... polyarthritis • Pulmonary ... : Subcutaneous nodules ... Diagnosis #Symptoms #Signs ... #Pulmonary
Pott's Disease in Tuberculosis - Diagnosis and Management Summary
Epidemiology:
 - Typically from TB endemic areas
 -
cases Clinical Signs ... years - May have signs ... symptoms of active pulmonary ... decreased reflexes Pathophysiology ... for concomitant pulmonary
Tree in Bud Sign
The Tree-in-Bud sign represents Endobronchial spread in a linear branching pattern and centrilobular
Tree in Bud Sign ... The Tree-in-Bud sign ... centrilobular nodules ... endobronchial TB ... radiology #ChestCT #pathophysiology
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
tuberculosis (LTBI) Pathophysiology ... regional lymph nodes ... Fungal infection • Sarcoidosis ... • HIV: 2/3 pulmonary ... Pleura • Lymph nodes
Sarcoidosis
Stage 1 - Bilateral LAD without involvement of lung parenchyma
Stage 2 - Bilateral LAD with involvement
Sarcoidosis Stage ... 4 - Fibrosis Pulmonary ... primarily in the upper lobes ... chylothorax, and pulmonary ... Stages #Staging #Signs
Hilar and mediastinal lymphadenopathy
In sarcoidosis the common pattern is right paratracheal and bilateral hilar adenopathy ('1-2-3-sign').
In
lymphadenopathy In sarcoidosis ... adenopathy ('1-2-3-sign ... calcification' in lymph nodes ... sometimes seen in sarcoidosis ... Diagnosis #Radiology #Pulmonary