Items tagged “stub”
1,311 results found
Article
Hypertrophy of the caudate lobe
Hypertrophy of the caudate lobe is seen in a number of conditions, including:
cirrhosis: most common
Budd-Chiari syndrome
primary sclerosing cholangitis (end stage)
congenital hepatic fibrosis
cavernous transformation of the portal vein
Radiographic features
The caudate-right lobe ratio m...
Article
Target sign (choledocholithiasis)
The target sign of choledocholithiasis is a finding seen on contrast-enhanced CT and comprises:
central density within the bile duct: stone
surrounding low density: bile or mucosa
Article
Line of Klein
The line of Klein describes an arbitrary line drawn along the superior edge of the femoral neck, which is useful in detecting early slipped upper femoral epiphysis in adolescents.
The line should normally intersect the lateral aspect of the superior femoral epiphysis. Failure of intersection ca...
Article
Drash syndrome
Drash syndrome, also known as the Denys-Drash syndrome, is associated with an abnormal WT1 gene (Wilms tumor gene) and consists of:
Wilms tumor
male pseudohermaphroditism
progressive glomerulonephritis
Article
Harrison sulcus
The Harrison sulcus or Harrison groove refers to a groove at the lower end of the rib cage seen in young children/infants with abnormally weak bones (e.g. rickets) or chronic respiratory disease (e.g. severe asthma). The lower chest is drawn in with flaring of the rib margin. The exact cause is ...
Article
VATER
VATER (equivalent to VACTERL) is the non-random constellation of a number of congenital anomalies.
V: vertebral anomalies
A: anal atresia
TE: tracheo-oesophageal fistulas
R: radial ray hypoplasia, polydactyly, and renal agenesis
Epidemiology
The prevalence of at least 3/5 anomalies occur...
Article
Esophageal atresia (classification)
Esophageal atresia is closely related to tracheo-esophageal fistula and can be divided into1:
type A: isolated esophageal atresia (8%)
type B: proximal fistula with distal atresia (1%)
type C: proximal atresia with distal fistula (85%)
type D: double fistula with intervening...
Article
Feingold syndrome
Feingold syndrome is characterized by the combination of:
microcephaly
digital abnormalities
alimentary tract atresias especially esophageal atresia
Article
Anaplastic rhabdomyosarcoma
Anaplastic rhabdomyosarcomas are a subtype of embryonal rhabdomyosarcoma, characterized by extensive anaplastic cells seen throughout the tumor 1.
Article
Santorinicele
A santorinicele refers to a cystic dilatation of the end of the dorsal pancreatic duct (duct of Santorini) 1,2 and is believed to be analogous to a dilatation of the most distal common bile duct, which is commonly known as a choledochocele 3.
It usually occurs in association with pancreas divis...
Article
Epidermoid cyst
Epidermoid cysts are non-neoplastic inclusion cysts derived from ectoderm that are lined solely by squamous epithelium. These are discussed separately by anatomic location:
epidermal inclusion cyst
intracranial epidermoid cyst
intradiploic epidermoid cyst
splenic epidermoid cyst
spinal epid...
Article
Neonatal appendicitis
Neonatal appendicitis is rare, presumably in part due to the short funnel shape of the appendix at that age. Symptoms are non-specific and may mimic necrotizing enterocolitis.
Article
Rectosigmoid ratio
The rectosigmoid ratio is a measurement of the diameter of the rectum divided by that of the sigmoid colon during contrast enema. It is of particular use in the diagnosis of Hirschsprung disease.
Normal children have a rectum that is larger than the sigmoid (i.e. rectosigmoid ratio >1). In fact...
Article
Pink tetralogy of Fallot
Pink tetralogy of Fallot refers to a tetralogy of Fallot in which the degree of right ventricular outflow obstruction is minimal, resulting no significant right to left shunt, and therefore no cyanosis. Symptoms are mild and presentation may be delayed, even into adulthood.
See also
tetralogy ...
Article
Potts shunt
A Potts shunt is a form of palliative surgery performed in patients with tetralogy of Fallot prior to the ability to repair the defect. It consists of a shunt formed between the descending thoracic aorta and the left pulmonary artery.
This does not relieve the right ventricular outflow obstruct...
Article
Waterston shunt
A Waterston shunt is a form of palliative surgery performed in patients with tetralogy of Fallot prior to the ability to repair the defect. It consists of a shunt formed between the ascending aorta and the right pulmonary artery.
This does not relieve the right ventricular outflow obstruction, ...
Article
Blalock-Taussig shunt
Blalock-Taussig shunt, also known as a BT shunt or Blalock-Thomas-Taussig shunt, is a palliative procedure designed to increase pulmonary arterial blood flow in patients with right ventricular outflow tract obstruction (e.g. tetralogy of Fallot) or during initial staged repair of hypoplastic lef...
Article
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...
Article
Tombstone iliac wings
Tombstone iliac wings, also referred to as Mickey Mouse ears pelvis, is an imaging descriptor for the iliac wings of individuals with achondroplasia 1. These are seen to be small and squared and have been likened to the appearance of tombstones or the ears of Mickey Mouse.
Article
Diffuse tracheal narrowing
Conditions associated with diffuse tracheal narrowing or collapse include (in alphabetical order):
amyloidosis
chronic obstructive pulmonary disease (COPD): saber sheath trachea
granulomatosis with polyangiitis
relapsing polychondritis
sarcoidosis
tracheobronchial tuberculosis 3
tracheoma...
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