Many patients show thin or thick curvilinear bands (purple arrows) usually in the lower lobes in the posterior and lateral basal segments. It is not clear what they represent....

Reticular opacities present as thin short lines that are usually peripheral and subpleural. When the reticular lesions are predominant, resembling an NSIP pattern (blue arrow),...

Unlike ground glass attenuation, which is increased attenuation that does not obscure the underlying vessels, consolidation obscures the underlying vessels and usually shows air...

Ground glass (GG) is the commonest sign. This can be subpleural or bronchocentric, with or without prominent vessels (green arrow), with reticular opacities / septal thickening...

In the earlier days of reading CT scans for suspect Covid-19 cases, an image such as this would have been called suspicious for but not definitive for Covid-19 (CO-RADS 3/4) or...

In most CT scan reports of patients suspected to have Covid-19 pneumonia, there will be a mention of a CO-RADS score. This is used to communicate the extent of likelihood of the...

This 6-years old girl presented with pain in the right hip. The radiograph shows an expansile osteolytic lesion involving the medial wall of the right acetabulum - there is a...

This 27-years old man presented with a left hilar mass, 13 years after amputation for a tibial osteosarcoma. The CT scan showed a left hilar mass with encasement of the left...

This is a 74-years old man, smoker, who presented with fever and cough. The CT scan showed a focal lesion in the anterior segment of the left upper lobe with extensive...