Articles
Articles are a collaborative effort to provide a single canonical page on all topics relevant to the practice of radiology. As such, articles are written and continuously improved upon by countless contributing members. Our dedicated editors oversee each edit for accuracy and style. Find out more about articles.
16,902 results found
Article
Orbital mass
An orbital mass carries a wide differential.
Differential diagnosis
tumors
lymphoma
metastasis
lacrimal gland or duct tumors
rhabdomyosarcoma of the orbit
retinoblastoma
optic nerve meningioma
optic nerve glioma
schwannoma (of trigeminal or other cranial nerves except optic)
neurofibr...
Article
Anterior tibial artery
The anterior tibial artery is the main arterial supply of the anterior compartment of the leg.
Gross anatomy
The anterior tibial artery arises from the popliteal artery in the popliteal fossa and continues distally as the dorsalis pedis artery.
Course
The anterior tibial artery arises as on...
Article
Optic neuritis
Optic neuritis denotes inflammation of the optic nerve and is one of the more common causes of optic neuropathy. It can be thought of as broadly divided into infectious and non-infectious causes, although the latter is far more frequent (including idiopathic cases). On imaging, optic neuritis is...
Article
TNM staging system
The TNM staging system (officially known as the TNM classification system of malignant tumors) is a cancer staging system overseen and published by the Union for International Cancer Control (UICC). The American Joint Committee on Cancer (AJCC) publishes the AJCC Cancer Staging Manual which is b...
Article
Non-puerperal mastitis
Non-puerperal mastitis, also known as Zuska disease, Zuska-Atkins disease or squamous metaplasia of lactiferous ducts (SMOLD), is a rare benign breast condition that is characterized by recurrent subareolar abscess formation, sometimes followed by chronic fistula formation and pus drainage. It i...
Article
Vertebral artery thrombosis
Vertebral artery thrombosis results in complete or partial occlusion of the vertebral artery and alteration of blood flow to the posterior cerebral circulation.
Clinical presentation
Ischemia or infarction to structures supplied by these arteries (e.g. brainstem, cerebellum, occipital lobes) m...
Article
Cystic nephroma
Cystic nephromas, previously known as multilocular cystic nephromas, are rare benign renal neoplasms classically occurring in adult females in the 4th and 5th decades. As of the 2016 WHO classification, they are considered distinct from pediatric cystic nephromas which have associated DICER1 gen...
Article
Rockwood classification of acromioclavicular joint injury
The Rockwood classification (1998) is the most commonly used (c.2024) classification system in use for acromioclavicular joint injuries 3,8,9.
Usage
This well-known 6-type system is a modification of the earlier 3-class classification system described by Allman (1967) 2 and Tossy (1963). The ...
Article
Vagal schwannoma
Vagal schwannomas are uncommon benign masses that can occur anywhere along the course of the vagus nerve but most commonly occur in the cervical region.
Epidemiology
Most commonly occurs in the 3rd to 5th decades. No sex predilection 3.
Clinical presentation
Patients may be asymptomatic. Whe...
Article
Ectopic pancreatic tissue
Ectopic pancreatic tissue, also known as heterotopic pancreatic tissue, refers to the presence of pancreatic tissue in the submucosal, muscularis or subserosal layers of the luminal gastrointestinal tract outside the normal confines of the pancreas and lacking any anatomic or vascular connection...
Article
Hamada classification of massive rotator cuff tears
The Hamada classification divides the x-ray features of massive rotator cuff tears into five grades. Subsequently, Walch subdivided grade 4 into two subtypes 1,2.
Classification
Hamada classification with Walch modification of rotator cuff tear arthropathy 1,3:
grade 1: acromiohumeral interva...
Article
Transverse myelitis
Transverse myelitis, also known as acute transverse myelitis, is an inflammatory condition affecting both halves of the spinal cord and associated with rapidly progressive motor, sensory, and autonomic dysfunction.
MRI is the most useful imaging modality, which generally shows a long segment (3...
Article
Meningioma
Meningiomas are extra-axial tumors and represent the most common tumor of the meninges. They are a non-glial neoplasm that originates from the meningocytes or arachnoid cap cells of the meninges and are located anywhere that meninges are found, and in some places where only rest cells are presum...
Article
Gastrointestinal MRI contrast agents
Gastrointestinal MRI contrast agents may be helpful in certain clinical scenarios in distinguishing bowel from intra-abdominal masses and normal organs. The contrast agents can be divided into positive agents (appearing bright on MRI) or negative agents (appearing dark on MRI).
Positive contras...
Article
RadioGraphics
RadioGraphics is a review journal published by the Radiological Society of North America (RSNA), and its first edition was issued in 1981 1. Radiology is a sister journal. Its current editor is Dr Christine "Cooky" O Menias.
History
In 1980, as the RSNA editor of educational materials, Dr Will...
Article
Liver biopsy (percutaneous)
Percutaneous liver biopsy, utilizing either ultrasound or CT guidance, allows for an accurate and reliable method of acquiring hepatic tissue for histopathological assessment. It is divided into two types:
non-focal or non-targeted liver biopsy (used in the assessment and staging of the parench...
Article
Rituximab-induced interstitial lung disease
Rituximab-induced interstitial lung disease (R-ILD) or rituximab pneumonitis is a rare non-infectious pulmonary side effect of the monoclonal CD20 antibody rituximab used in therapy for certain oncological/hematological and rheumatological disorders.
Epidemiology
Since solely based on casuisti...
Article
Sphincter of Oddi
The sphincter of Oddi (also known as the sphincter of ampulla or choledochal sphincter) is a complex of four smooth muscle sphincters (superior and inferior sphincter choledochus [also known as Sphincter of Boyden], sphincter pancreaticus, and sphincter ampullae) within the duodenal wall. It sur...
Article
Radiology (journal)
Radiology is a peer-reviewed monthly journal published by the Radiological Society of North America (RSNA). Its first edition was issued in September 1923 1.
Impact factor
According to the Radiology website, the journal's impact factor for 2022 is 19.7. Its Eigenfactor score is 0.05185, based ...
Article
Kyoto guidelines
The Kyoto guidelines are a classification system for intraductal papillary mucinous neoplasms (IPMNs) and mucinous cystic neoplasms (MCNs). They were first published in 2006, and revised guidelines were published in 2012 1, 2017 3, and 2024 4. They have been previously known as the Sendai criter...
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