34 results
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
Perilymphatic nodules ... perilymphatic nodules ... #Diagnosis #Radiology ... Pulmonary #HRCT #CTChest ... #Differential #
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
centrilobular nodules ... Sarcoidosis: nodules ... Clinical #Diagnosis #Radiology ... #Pulmonary #CTChest ... NodularPattern #Differential
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
centrilobular nodules ... and also nodules ... #Diagnosis #Radiology ... Pulmonary #HRCT #CTChest ... #Differential #
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Nodular pattern( ... Sarcoidosis: nodules ... bronchiolitis in infection ... #Clinical #Radiology ... #HRCT #CTChest
Liver Mass Differential Diagnosis
Solid:
 • Benign: Hepatic Hemangioma, Focal nodular hyperplasia, Hepatocellular adenoma, Regenerative nodules
 •
Liver Mass Differential ... Hemangioma, Focal nodular ... , Regenerative nodules ... Cystadenocarcinoma, Primary SCC Infectious ... Diagnosis #hepatology #Radiology
Pulmonary Tuberculosis - Patterns of Involvement
 • Scarring, Nodules and Consolidation
    - Lobar
Involvement • Scarring, Nodules ... distributed small nodules ... spread of MTB infection ... #TB #Patterns #chest ... xray #clinical #radiology
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
Radiology • Miliary ... small (1 -4 mm) nodules ... Opacities: • Infectious ... Nocardia, zoonotic infections ... #Radiology #differential
Tree-in-bud
In centrilobular nodules the recognition of 'tree-in-bud' is of value for narrowing the differential diagnosis.
Tree-in-bud describes
centrilobular nodules ... narrowing the differential ... irregular and often nodular ... Diagnosis #Pathophys #Radiology ... #Pulmonary #CTChest
Etiologies of pulmonary infections according to CT-scan patterns. 
CMV cytomegalovirus, GM galactomannan, HSV herpes simplex virus,
Etiologies of pulmonary infections ... Varicella–Zoster virus NODULAR ... aureus) EXCAVATED NODULES ... ComputedTomography #Differential ... #Diagnosis #Chest
Differential diagnosis of the reversed halo sign (RHS). AIA, angioinvasive aspergillosis; AIS, adenocarcinoma in situ; COP,
centrilobular nodules ... RHS and small nodules ... RHS and small nodules ... lymphadenopathy and small nodules ... Diagnosis #Pulmonary #Radiology