Items tagged “signs”
75 results found
Case
Apple core sign in colon cancer
Published
19 May 2017
53% complete
Photo
Annotated image
CT
Case
Triquetral fracture - pooping duck sign
Published
07 Dec 2017
91% complete
X-ray
Diagram
Article
Pooping duck sign
Pooping duck sign indicates the presence of a triquetral fracture on a lateral wrist radiograph, where an avulsed fracture fragment from the dorsal cortex of the triquetrum projects along the dorsal aspect of the osseous structures of the wrist.
In this sign, the fracture fragment represents th...
Article
Trident acetabulum
Trident acetabulum is an appearance which can be seen in several skeletal dysplasias 1.
It is characterized by small bony spurs at the medial and lateral acetabular margins with a more subtle central spur, resembling a trident, the three-pronged spear of classical Greece 1.
The appearance has...
Article
Gastric bubble
The gastric bubble is a radiolucent rounded area generally nestled under the left hemidiaphragm representing gas in the fundus of the stomach.
On a lateral radiograph, the gastric bubble is usually located between the abdominal wall and spine. It can be seen on chest or abdominal plain films. I...
Article
Liver overlap sign (sigmoid volvulus)
The liver overlap sign can be seen in sigmoid volvulus wherein the sigmoid loop is seen, usually on an abdominal radiograph, ascending to the right upper quadrant and projecting over the liver shadow.
In one study of 21 patients with confirmed sigmoid volvulus, the sign was present in 9 patient...
Case
Thumbprinting sign and its differential diagnosis
Published
31 Jul 2018
44% complete
Diagram
Article
Golden arches sign (knees)
The Golden arches sign is a nuclear medicine sign often seen on bone scan in patients with total knee prosthesis.
The femoral condylar prosthesis results in two central photopenic regions with two 'hot' arches formed around the periprosthetic region.
This finding is non-specific and may sugges...
Case
Eye of the tiger sign
Published
17 Dec 2018
80% complete
MRI
Article
Barbell sign (progressive multifocal leukoencephalopathy)
The barbell sign is a radiological sign present in progressive multifocal leukoencephalopathy (PML) on MRI brain.
This describes confluent T2/FLAIR parieto-occipital abnormalities with a thin continuation of signal abnormality across the splenium 1,2. Given the lack of mass effect typically exh...
Article
Crossover sign (femoroacetabular impingement)
The crossover sign, also known as the 'figure of 8' sign, is a plain film sign that indicates acetabular retroversion 2. Acetabular retroversion is a form of pincer morphology and predisposing factor for femoroacetabular impingement and is thought to promote osteoarthritis of the hip 3.
Radiog...
Article
Cluster sign
The cluster sign is a finding on MRI and CT that is associated with pyogenic hepatic abscesses and can help differentiate pyogenic abscesses from other types of liver lesions.
Radiographic features
The cluster sign is best seen on MRI T2-weighted and postcontrast T1-weighted sequences. Small n...
Article
Astronomical inspired signs
Many signs in radiology have been inspired by astronomical phenomena:
comet tail (disambiguation)
comet tail artifact (ultrasound)
color comet tail artifact
comet tail sign (chest)
comet tail sign (phleboliths)
earth-heart sign
galaxy sign (chest)
loss of half-moon overlap sign
milky wa...
Case
Ears of the lynx sign of hereditary spastic paraplegia
Published
26 Nov 2019
95% complete
MRI
Article
Starry sky appearance (MRI)
Starry sky appearance on MRI refers to the appearance of small innumerable T2 hyperintense bile duct hamartomas and biliary microhamartomas, scattered throughout the T2 hypointense hepatic parenchyma, which resembles a “starry sky”. The high T2 signal lesions represent Von Meyenburg complexes se...
Article
Weight loss
A clinical presentation of weight loss is extremely common and often a source of marked anxiety for the patient. The commonest cause of unintentional weight loss (UWI) is gastrointestinal tract disease, and not malignancy.
Terminology
The published literature lacks a consistent definition of w...
Article
Caput medusae sign (disambiguation)
The caput medusae sign may refer to:
caput medusae sign (portal hypertension)
caput medusae sign (developmental venous anomaly)
History and etymology
Caput is the Latin for head, and the sign literally translates as head of Medusa 3.
The appearance is reminiscent of the hair of Medusa, one ...
Article
Starry sky appearance (disambiguation)
Starry sky appearance is a radiological sign used to describe the appearance of the liver on two different imaging modalities:
starry sky appearance (ultrasound)
starry sky appearance (MRI)
starry sky artifact (MRI)
Article
Cheerio sign (disambiguation)
The Cheerio sign has been described in two different scenarios:
Cheerio sign (pulmonary nodule)
Cheerio sign (shoulder)
Case
Spalding sign
Published
19 Feb 2020
94% complete
Ultrasound