Search results for “also”
8,621 results found
Article
Pancoast tumor
Pancoast tumor, also known as superior sulcus tumor, refers to a relatively uncommon situation where a primary lung cancer arises in the lung apex and invades the surrounding soft tissues. Classically a Pancoast syndrome results, but in actuality this is only seen in one quarter of cases.
Term...
Article
Scleroderma (musculoskeletal manifestations)
Musculoskeletal manifestations of scleroderma are common and variable.
For a general discussion of scleroderma, please refer to the parent article: scleroderma.
Radiographic features
Plain radiograph
Imaging findings demonstrate bone and soft tissue changes 2-4. The hands are the most common...
Article
Glenohumeral arthrography
Glenohumeral (shoulder) arthrography is an imaging technique used to evaluate the glenohumeral joint to evaluate the joint components. A glenohumeral joint injection is usually performed under fluoroscopic guidance although ultrasound and CT can be also be used. An alternative to direct arthrogr...
Article
Perthes disease
Perthes disease, also known as Legg-Calvé-Perthes disease, refers to idiopathic osteonecrosis of the femoral epiphysis seen in children.
Terminology
Perthes disease should not be confused with Perthes lesion of the shoulder.
Epidemiology
Perthes disease is relatively uncommon and in Western...
Article
Decompressive craniectomy
Decompressive craniectomies are craniectomies performed to relieve raised intracranial pressure, most commonly in the setting of florid cerebral edema following cranial trauma or swelling following infarction 1.
History
Craniectomies for the treatment of cranial trauma date back to at least 10...
Article
Cyclops lesion (knee)
The cyclops lesion, also known as localized anterior arthrofibrosis, is a painful anterior knee mass associated with loss of extension that arises as a complication of anterior cruciate ligament (ACL) reconstruction, although has rarely been reported in patients with ACL injuries that have not b...
Article
Subependymoma
Subependymomas are uncommon, benign (WHO grade 1) tumors which are slow-growing and non-invasive. They tend to occur in middle-aged and older individuals and usually identified as an incidental finding.
Terminology
These tumors were previously also known as subependymal astrocytomas, not to b...
Article
Placental abruption
Placental abruption (or abruptio placentae) refers to a premature separation of the normally implanted placenta after the 20th week of gestation and before the 3rd stage of labor. It is a potentially fatal complication of pregnancy and a significant cause of third-trimester bleeding/antepartum h...
Article
Braxton Hicks contractions
Braxton Hicks contractions, also known as practice contractions or false labor, are physiological contractions of myometrium that occur in pregnancy. They are often sporadic and start by ~6 weeks.
Radiographic features
Antenatal ultrasound
It may be seen as a transient change in myometrial th...
Article
Excessive dynamic airway collapse
Excessive dynamic airway collapse (EDAC) refers to a dynamic form of central airway obstruction characterized by a decrease of ≥50% (some publications suggest >70% ref) in the cross-sectional area of the tracheobronchial lumen.
Terminology
Some authors consider an overlap with tracheomalacia, ...
Article
Tumor pseudoprogression (lung cancer)
Radiologic tumor pseudoprogression on imaging denotes an imaging appearance of tumor response where the tumor first exhibits findings suggestive of progression (i.e. growth, new lesions). However, during sustained therapy, response is eventually demonstrated 1.
Epidemiology
With the advent of ...
Article
Common hepatic duct
The common hepatic duct (CHD) is formed by the right and left hepatic ducts junction. It joins the cystic duct to form the common bile duct (CBD). It is approximately 4 cm long and 4 mm in diameter, typically.
Together with the cystic duct (laterally) and cystic artery (superiorly), they form ...
Article
Osteonecrosis of the femoral head
Osteonecrosis of the femoral head, previously known as avascular necrosis (AVN) of the hip, is the most common site for osteonecrosis, presumably due to a combination of precarious blood supply and high loading when standing.
Idiopathic osteonecrosis of the femoral head epiphysis in children (...
Article
Meningeal hemangiopericytoma (historical)
Hemangiopericytomas of the meninges are rare tumors of the meninges, now considered to be an aggressive form of solitary fibrous tumors of the dura. They often present as large and locally aggressive dural masses, frequently extending through the skull vault. They are difficult to distinguish on...
Article
Systemic lupus erythematosus (CNS manifestations)
Central nervous system manifestations of systemic lupus erythematosus (CNS lupus), also known as neuropsychiatric systemic lupus erythematosus (NPSLE), describe a very diverse range of neuropsychiatric manifestations that are secondary to systemic lupus erythematosus (SLE) in the central nervous...
Article
Anal atresia
Anal atresia, or imperforate anus, refers to a spectrum of anorectal abnormalities ranging from a membranous separation to complete absence of the anus.
Epidemiology
The estimated incidence is 1 in 5000 live births.
Associations
There are frequent associations with other congenital abnormali...
Article
Small bowel mesentery internal hernia
Small bowel mesentery internal hernias (alternative plural: herniae) are a form of internal bowel herniation involving protrusions of viscera through defects in the peritoneum or bowel mesentery.
Epidemiology
This type of internal herniation is more often seen in neonates than in adults ref.
...
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 12 as a more precise d...
Article
External auditory canal cholesteatoma
External auditory canal cholesteatomas are a rare subtype of acquired cholesteatoma.
Epidemiology
The external acoustic canal is a rare location for a cholesteatoma with an estimated incidence of around 1.2 per 1,000 new otological patients ref. The overall incidence rate in one large study wa...
Article
Critical zone in rotator cuff tendons
The critical zone of the rotator cuff is an area approximately 8-15 mm from the insertion of the rotator cuff tendons onto the greater tubercle of the humeral head, mainly within the supraspinatus tendon. This is a watershed zone between the anterior and posterior circumflex humeral, thoracoacro...
Unable to process the form. Check for errors and try again.