393 results
Article
Atoll sign (lungs)
The atoll sign or reversed halo sign refers to focal ground-glass opacity with a peripheral ring of consolidation which may be complete or incomplete. The sign was originally described in organizing pneumonia but can also occur in infections, infarction, granulomatous disease, inflammation and t...
Article
Tuberculosis
Tuberculosis (commonly abbreviated to TB, short for tubercle bacillus) encompasses an enormously wide disease spectrum affecting multiple organs and body systems predominantly caused by Mycobacterium tuberculosis. A small proportion can also be caused by Mycobacterium bovis through drinking unpa...
Article
Viral encephalitides
Viral encephalitides are the result of brain parenchymal infection by a number of different viruses, many of which have similar presentations and imaging features. Specific diagnosis often requires PCR.
For viral infection of the meninges, please refer to the general article on viral meningiti...
Article
Acute encephalopathy with biphasic seizures and late reduced diffusion
Acute encephalopathy with biphasic seizures and late reduced diffusion (AESD), also known as acute encephalopathy with biphasic seizures and late restricted diffusion, is a rare, acute, often parainfectious, pediatric encephalopathy syndrome.
Epidemiology
Acute encephalopathy with biphasic sei...
Article
Bird’s nest sign (lungs)
The bird’s nest sign refers to the appearance created by a reverse halo sign with associated irregular and intersecting areas of stranding or irregular lines within the area of ground-glass opacity 1.
Both bird's nest sign and reverse halo signs are suggestive of invasive pulmonary fungal infec...
Article
Troponin
Troponin is a protein of key importance in the functioning of skeletal and cardiac muscles. It forms part of the contractile mechanism and comprises three main subunits: troponin C, troponin I, and troponin T.
Troponin elevation
Elevation of serum troponin can occur from a number of causes an...
Case
Left upper lobe collapse
Published
24 Oct 2020
75% complete
CT
Case
Celiac trunk occlusion
Published
14 Jun 2022
95% complete
CT
Case
Bell palsy
Published
29 May 2020
80% complete
MRI
Annotated image
Case
Avascular necrosis of hip
Published
16 May 2022
80% complete
MRI
Case
Atrio-esophageal fistula
Published
08 Oct 2021
98% complete
CT
Case
Double aortic arch
Published
04 Aug 2021
80% complete
CT
Case
Dural sinus thrombosis and parenchymal hemorrhage
Published
28 Apr 2021
95% complete
CT
Case
Spontaneous retroperitoneal hemorrhage
Published
15 Jul 2021
95% complete
CT
Case
Thrombosis of adnexal varices
Published
10 Aug 2020
69% complete
Ultrasound
Case
COVID 19 Pneumonia
Published
05 Apr 2020
91% complete
X-ray
Case
COVID pneumonia and barotrauma complications
Published
13 Feb 2021
91% complete
X-ray
Case
Non-invasive thymoma
Published
05 Feb 2023
75% complete
CT
Case
Vaccine-induced lymphadenopathy
Published
01 Sep 2021
74% complete
Photo
Ultrasound
Case
Acute pancreatitis
Published
18 Oct 2021
80% complete
CT
Unable to process the form. Check for errors and try again.