Search results for “multiple sclerosis”
432 results found
Article
Cytotoxic lesions of the corpus callosum (CLOCCs)
Cytotoxic lesions of the corpus callosum (CLOCCs) represent a collection of disparate conditions that can cause signal change in the corpus callosum, usually involving the splenium.
Terminology
The term cytotoxic lesions of the corpus callosum (CLOCCs) has been proposed recently 12 as a more ...
Article
Facial colliculus syndrome
Facial colliculus syndrome refers to a constellation of neurological signs due to a lesion at the facial colliculus, involving:
abducens nerve (CN VI) nucleus
facial nerve (CN VII) fibers at the genu
medial longitudinal fasciculus
Clinical presentation
lower motor neuron facial nerve palsy ...
Case
Acute disseminated encephalomyelitis
Published
09 May 2013
65% complete
MRI
Article
Cystic lung disease
Cystic lung disease is an umbrella term used to group the conditions coursing with multiple lung cysts.
Clinical presentation
The clinical presentation is an important clue to the differential diagnosis of cystic lung diseases 12.
Diseases that present with insidious dyspnea or spontaneous p...
Article
Lymphangioleiomyomatosis
Lymphangioleiomyomatosis (LAM) is a low-grade destructive metastasizing PEComatous tumor 1 resulting from the proliferation of LAM cells in the lung, kidney and axial lymphatics. The disease is caused by mutations of the TSC2 or TSC1 genes and is more commonly sporadic rather than inherited. Cys...
Article
Butterfly glioma
Butterfly gliomas are high-grade astrocytomas, IDH-mutant or glioblastomas, IDH-wildtype that cross the midline via the corpus callosum. Other white matter commissures are also occasionally involved. The term butterfly refers to the symmetric wing-like extensions across the midline.
Butterfly ...
Case
Multiple bone infarcts
Published
23 Apr 2024
73% complete
MRI
Article
Perivascular spaces
Perivascular spaces, also known as Virchow-Robin spaces, are fluid-filled spaces that surround small arterioles, capillaries and venules in the brain. Those that surround perforating vessels are frequently seen on routine MRI imaging.
Despite having been described well over a century ago and se...
Article
Diffuse brainstem glioma (historical)
Diffuse brainstem gliomas or diffuse intrinsic pontine gliomas was a term used to describe infiltrating astrocytomas arising in the brainstem, usually in children. It is no longer recognized as a distinct entity, removed from the 2016 update to the WHO classification of CNS tumors replaced by a ...
Article
CT head (protocol)
CT head, also known as CT brain, refers to a computed tomography (CT) examination of the brain and surrounding cranial structures. It is most commonly performed as a non-contrast study, but the addition of a contrast-enhanced phase is performed for some indications.
This article covers non-cont...
Article
Medical abbreviations and acronyms (N)
This article contains a list of commonly used medical abbreviations and acronyms that start with the letter N and may be encountered in medicine and radiology (please keep the main list and any sublists in alphabetic order).
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R ...
Article
Acute disseminated encephalomyelitis (ADEM)
Acute disseminated encephalomyelitis (ADEM), as the name would suggest, is featured by a monophasic acute inflammation and demyelination of white matter typically following a recent (1-2 weeks prior) viral infection or vaccination 4,6. Grey matter, especially that of the basal ganglia, is also o...
Article
Paget disease (bone)
Paget disease of the bone is a common, chronic metabolic bone disorder characterized by excessive abnormal bone remodeling. The classically described radiological appearances are expanded bone with a coarsened trabecular pattern. The pelvis, spine, skull, and proximal long bones are most frequen...
Case
Multiple sclerosis
Published
10 Aug 2011
95% complete
MRI
Article
Amaurosis fugax
Amaurosis fugax is the transient monocular loss of vision, normally lasting a few seconds to a few minutes, secondary to vascular ischemia or insufficiency.
Epidemiology
It has an incidence of 50,000 per year in the United States.
Clinical presentation
Patients present with transient monoc...
Article
Main differentials in musculoskeletal imaging
Here is a list of some of the most useful differential diagnoses in musculoskeletal imaging.
By process
lucent/lytic bone lesions (FEGNOMASHIC)
multiple lucent/lytic bone lesions
benign lytic bone lesions in patients under 30 years old
diffuse bony sclerosis
permeative process in bone
pse...
Article
Kellgren and Lawrence system for classification of osteoarthritis
The Kellgren and Lawrence system is a common method of classifying the severity of osteoarthritis (OA) using five grades.
The original paper 1 graded OA at the following sites and projections:
hands: posteroanterior
cervical spine: lateral
lumbar spine (facet joints only): lateral
hips: an...
Article
Intraosseous lipoma
Intraosseous lipomas are rare benign lesions that account for about 0.1-2.5% of all bone tumors. They are, however, the most common lipogenic tumors in bone 6.
Intraosseous lipomas account for one of the 'I's in the popular mnemonic for lucent bone lesions FEGNOMASHIC.
Epidemiology
Intraosseo...
Article
Renal angiomyolipoma
Renal angiomyolipomas (AML) are a type of benign renal neoplasm encountered both sporadically and as part of a phakomatosis, most commonly tuberous sclerosis. They are considered one of a number of tumors with perivascular epithelioid cellular differentiation (PEComas) and are composed of vascul...
Case
Tuberous sclerosis
Published
09 Apr 2017
77% complete
CT
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