Items tagged “stub”

1,127 results found

Supraoptic recess

The supraoptic recess is a small angular recess or diverticulum that sits at the junction of the floor and anterior wall of the third ventricle, immediately above the optic chiasm. Related pathology When the third ventricle is expanded due to hydrocephalus (e.g. aqueduct stenosis) this recess,...

Median aperture (of Magendie)

The median aperture (of Magendie) is one of the foramina in the ventricular system and links the fourth ventricle and the cisterna magna. Along with the lateral apertures (of Luschka) it makes up one of the three ways that CSF can leave the fourth ventricle and enter the subarachnoid space.

Foramen of Magendie

The foramen of Magendie (also called median aperture) is one of the foramina in the ventricular system and links the fourth ventricle and the cisterna magna. It is one of the three ways that cerebrospinal fluid (CSF) can leave the fourth ventricle and enter the subarachnoid space.

Styloid apparatus

The styloid apparatus, found within the parapharyngeal space, refers to the structures derived from the 2nd branchial arch along with associated ligaments and muscles: styloid process of the temporal bone lesser horn of the hyoid bone stylohyoid ligament stylomandibular ligament stylohyoid ...

Liddle syndrome

Liddle's syndrome is an autosomal dominant condition which inhibits the normal degradation of the ENaC sodium channel, resulting in findings that mimic Conn's syndrome (hyperaldosteronism); hypernatraemia, hypokalaemia and elevated serum bicarbonate. Typically patients are asymptomatic other tha...

Pepper syndrome

Pepper syndrome is of interest only (the term is not readily used in day-to-day practice), and refers to primary adrenal neuroblastoma with extensive liver metastases 1. In essence, it refers to stage 4S neuroblastoma (see staging of neuroblastoma). 

Coronal suture

The coronal suture is the cranial suture formed between the two parietal bones and the frontal bone. At the junction of coronal, sagittal and frontal sutures is the anterior fontanelle which is open at birth and usually fuses at around 18-24 months after birth. Fusion of the coronal suture occu...

Indusium griseum

The indusium griseum is a thin layer of grey matter which covers the superior surface of the corpus callosum, extending from the paraterminal gyrus anteriorly to the dentate gyrus and hippocampus posteriorly via the fyrus fasciolaris. It has four longitudinal bundles (medial and lateral longitud...

Extreme capsule

The extreme capsule is a series of white matter tracts in the brain that run between the claustrum and insular cortex.

Forceps major

The forceps major, also known as the posterior forceps, is a fibre bundle which connects the occipital lobes and crosses the midline via the splenium of the corpus callosum. 

Forceps minor

The forceps minor, also known as the anterior forceps, is a fibre bundle which connects the lateral and medial surfaces of the frontal lobes and crosses the midline via the genu of the corpus callosum.

Paraphysis elements

The so-called paraphysis elements are embryonic structures which appears like a thin strand between telencephalon and the anterior portions of diencephalon 1. It is believed to the be structure which results in colloid cysts of the third ventricle. 

Stria medullaris

The stria medullaris is a fiber bundle containing efferent fibers from the septal nuclei, lateral preoptico-hypothalamic region, and anterior thalamic nuclei to the habenula. It forms a horizontal ridge on the medial surface of the thalamus.

Wilson Mikity syndrome

Wilson Mikity syndrome (WMS) refers to chronic lung disease in premature infants, characterized by early development of cystic interstitial emphysema (PIE). This is now sometimes considered as part of the spectrum of bronchopulmonary dysplasia. See also chronic pulmonary insufficiency of prema...

Oro-antral fistula

Oro-antral fistula (OAF) is a pathological communication between the oral cavity and the maxillary sinus (antrum). Epidemiology There is a slightly greater male predilection 2. Pathology Subtypes Oro-antral fistulas may be subtyped by location into: alveolo-sinusal fistula palatal-sinusal...

Doppler shift

Doppler shift or Doppler effect is defined as the change in frequency of sound wave due to a reflector moving towards or away from an object, which in the case of ultrasound is the transducer. Doppler equation  F = 2fo(v/c)cos(Q) where: F is doppler frequency shift fo is transmitted frequen...

Multiple filling defects of the ureter (differential)

Multiple filling defects within a ureter, as seen on conventional IVU or CT IVU, have a relatively small differential including: spreading or multifocal transitional cell carcinoma (TCC) vascular indentations multiple ureteral stones (steinstrasse) blood clots ureteritis cystica Stevens-Jo...

Umbilical cord coiling index

Umbilical cord coiling index is defined as number of coils per one centimeter of length of the cord . Normal index is one coil for a length of five centimeters. If number of coils are more per centimeter it is called as hypercoiled and less than it is called as hypocoiled umbilical cord. This in...

Forked umbilical cord

Forked umbilical cord is rare anomaly of the umbilical cord, which can be detected on antenatal scan. The umbilical cord splits into two cords and contains three vessels in each of the bifurcated cords. This anomaly is seen associated with monochorionic twins. Radiographic features Ultrasound ...

Petromastoid canal

Petromastoid canal or subarcuate canal joins the mastoid antrum to the posterior cranial fossa 1 and contains the subarcuate vein and artery. Classification type I - invisible type II - less than 0.5 mm width type III - 0.5-1 mm width type IV - greater than 1 mm width 1 Radiographic featur...

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