33 results
Halo Sign on Chest CT
 • SPN or mass surrounded by a circumferential GGO
 • DDx:
Halo Sign on Chest ... circumferential GGO ... sarcoidosis, mets to the lung ... #Lung #Pulmonary ... #diagnosis #radiology
Mosaic Attenuation on Chest CT
 • Variable attenuation seen on a chest CT in a lobular
Mosaic Attenuation ... on Chest CT • ... attenuation seen on a chest ... #Lung #Pulmonary ... #diagnosis #radiology
On the left a patient with ground glass pattern in a mosaic distribution.
The clue here is
hyperperfused lung ... caliber due to chronic ... thromboembolic disease ... #Clinical #Radiology ... #CTChest #GGO #
On the left another patient with ground glass pattern in a mosaic distribution.
Again the ground glass
hyperperfused lung ... adjacent to oligemic lung ... thromboembolic disease ... #Clinical #Radiology ... #CTChest #GGO #
Chronic Cough - Differential Diagnosis Algorithm
Red Flags:
 • Fever, night sweats, chills (infection)
 • Weight loss,
Dyspnea (underlying lung ... lymadenopathy, clubbing, chest ... refer + order CT ... History of cancer, lung ... disease #Chronic
COVID-19 Chest CT - Case 4

Main aspects of the image: multiple opacities in the glass and
COVID-19 Chest CT ... periphery of two lungs ... opacities and mosaic ... Radiologia Torácica ... #CTChest #Clinical
Mosaic attenuation
The term 'mosaic attenuation' is used to describe density differences between affected and non-affected lung
Mosaic attenuation ... due to chronic ... thromboembolic disease ... #Diagnosis #Radiology ... #Pulmonary #CTChest
Atoll Sign (Reverse-Halo Sign) on Chest CT
 • Central GGO surrounded by a crescentic or circumferential
Reverse-Halo Sign) on Chest ... CT • Central GGO ... Reverse #Halo #Sign #CT ... #Lung #Pulmonary ... #diagnosis #radiology
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
pneumonia • Chronic ... : Pleuritic chest ... level seen • Chest ... CT Lung Abscess ... treatment until the chest
COVID-19 Chest CT - Case 3

Main aspects of the image: multiple opacities in the glass and
COVID-19 Chest CT ... periphery of two lungs ... opacities and mosaic ... Radiologia Torácica ... #CTChest #Clinical