Search results for “also”
24 results found
Article
Lipohemarthrosis
Lipohemarthrosis results from an intra-articular fracture with escape of fat and blood from the bone marrow into the joint, and is most frequently seen in the knee, associated with a tibial plateau fracture or distal femoral fracture; rarely a patellar fracture. They have also been described in ...
Article
Light bulb sign (posterior shoulder dislocation)
The light bulb sign refers to the abnormal AP radiograph appearance of the humeral head in posterior shoulder dislocation.
When the humerus dislocates it also internally rotates such that the head contour projects like a light bulb when viewed from the front 1.
See also
light bulb sign (hepat...
Article
Double-arc sign
The double-arc sign, also known as the McKee double-arc sign, is a radiographic indication of a coronal shear fracture of the distal humerus, which involves the capitellum and extends beyond the lateral trochlear ridge to include a part of the trochlea 1,2.
The double-arc sign is characterized ...
Article
Ulnar bow sign
The ulnar bow sign is a radiographic indication of a plastic deformity of the ulna, its assessment is quite useful in the case of a suspected "isolated" radial head dislocation in the pediatric population 1,3.
"Isolated" dislocation of the radial head is almost always in fact associated with a ...
Article
Sail sign (elbow)
The sail sign on an elbow radiograph, also known as the anterior fat pad sign, describes the elevation of the anterior fat pad to create a silhouette similar to a billowing spinnaker sail from a boat. It indicates the presence of an elbow joint effusion.
The anterior fat pad is usually conceale...
Article
Lead pipe fracture
The term lead pipe fracture is the term for a radiographic appearance given to a simultaneous greenstick fracture of one side of the bone (usually metaphysis) with a buckle fracture of the opposing cortex of the same bone.
There are differing opinions in texts as to whether this term should be...
Article
Fallen lung sign
The fallen lung sign (also known as CT fallen lung sign) describes the appearance of collapsed lung away from the mediastinum encountered with tracheobronchial injury (in particular those >2 cm away from the carina). It is helpful to look for this rare but specific sign, in cases of unexplained ...
Article
Lung point sign
The lung point sign is a highly specific ultrasound sign of pneumothorax. It involves visualizing the point where the visceral pleura (lung) begins to separate from the parietal pleural (chest wall) at the margin of a pneumothorax.
In the absence of pneumothorax, the two pleural layers slide a...
Article
Sandwich sign (disambiguation)
The sandwich sign is used for two different imaging appearances:
sandwich sign (Marchiafava-Bignami disease)
sandwich sign (mesentery)
Sandwich sign has also been coined for the appearance of:
primary pleural lymphoma 1,2
mediastinal lymphoma 3
marrow edema and hemorrhage on MRI of flexion...
Article
Terry-Thomas sign
The Terry-Thomas sign refers to an increase in the scapholunate space on an AP radiograph of the wrist (or coronal CT). The increased distance indicates scapholunate dissociation (often with rotary subluxation of the scaphoid) due to ligamentous injury. There is no consensus as to what measureme...
Article
Anterior humeral line
The anterior humeral line is key to demonstrating normal elbow alignment and should be used whenever reading a pediatric elbow radiograph to exclude a subtle supracondylar fracture.
Measurement
A line drawn down the anterior surface of the humerus should intersect the middle third of the capit...
Article
Seatbelt sign (abdomen)
The seatbelt sign is both a clinical and radiological sign. It is simply the presence of ecchymosis and/or abraded skin in the distribution of a seatbelt (i.e. horizontal and/or diagonal) extending across the abdomen evident after a motor vehicle accident.
Epidemiology
A positive abdominal sea...
Article
Round belly sign (abdominal compartment syndrome)
Round belly sign is a sign of increased abdominal pressure of greater than 20 mmHg in abdominal compartment syndrome where the abdomen has a rounded appearance of transverse section on CT, rather than its typical oval shape.
The sign is positive when the AP to transverse diameter of the abdomen...
Article
Starfield pattern (fat embolism)
A starfield pattern has been described as being typical of DWI of patients with cerebral fat embolism 1,2. Although the term is closely linked to the diagnosis of fat embolism, it should be noted that such an appearance is merely the result of very numerous microemboli. As such, a similar patter...
Article
Orbital emphysema
Orbital emphysema is the presence of gas within the orbital soft tissues. It is usually due to orbital fractures communicating with the paranasal sinuses but can be caused by penetrating trauma and infection. It is a common finding also after orbital or ocular surgery.
Location
preseptal
...
Article
Broken heart sign
The broken heart sign, also known as the Y sign in older otorhinolaryngology literature 2,3, describes the appearances of incudomalleolar disarticulation.
This sign is identified on CT in the coronal plane, being formed by the widening of the incudomalleolar joint and lateral displacement of th...
Article
Deep sulcus sign (chest)
The deep sulcus sign on a supine chest radiograph raises suspicion of a pneumothorax.
On a supine chest radiograph (common in intensive care units or as part of a trauma radiograph series), it may be the only suggestion of a pneumothorax because air collects anteriorly and basally, within the n...
Article
Pronator quadratus sign
The pronator quadratus sign, also known as MacEwan sign, can be an indirect sign of distal forearm trauma. It relies on displacement of the fat pad that lies superficial to the pronator quadratus muscle as seen on a lateral wrist radiograph.
Pathology
Displacement, anterior bowing, or oblitera...
Article
Flat tyre sign (globe rupture)
The flat tyre sign, also known as the mushroom sign, is one of the most specific signs of ruptured eye globe, due to the similarity between the abnormal contour of injured globe and the appearance of a flat tyre 1. It is classically described on CT but may be seen on ultrasound or MRI 2.
The mo...
Article
Tadpole sign
The tadpole sign, also known as the lollipop sign, refers to a characteristic morphology of post-traumatic bridging vein thrombosis with a rounded "head" and a tapering "tail". The finding demonstrates a high specificity for abusive head trauma, a sub-type of non-accidental injury, and should wa...
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