Items tagged “variant”

422 results found
Article

Lumbosacral transitional vertebra

Lumbosacral transitional vertebrae (LSTV) are a relatively common variant and can be seen in ~25% (range 15-35%) of the general population 1-3. Non-recognition of this variant and/or poor description in the report can lead to operations or procedures performed at the wrong level.  Depending on ...
Case

Onodi cells

 Diagnosis certain
Dr Roberto Schubert
Published 18 Jun 2011
95% complete
CT
Case

Aortic arch origin of left vertebral artery

 Diagnosis certain
Dr Roberto Schubert
Published 17 Jul 2011
68% complete
MRI
Article

Block vertebra

Block vertebra is a type of vertebral anomaly where there is a failure of separation of two or more adjacent vertebral bodies. It is an anatomic variant. Pathology In a block vertebra, there is partial or complete fusion of adjacent vertebral bodies. Associations hemivertebrae/absent vertebr...
Article

Transverse vaginal septum

Transverse vaginal (transvaginal) septum (TVS) is a type of rare congenital uterovaginal anomaly (class II under the Rock and Adam classification). Epidemiology It is rare with a frequency of 1 in 70,000 females. Clinical presentation In the case of a complete septum, patients commonly prese...
Article

Congenital utero-vaginal anomalies

There are many classification systems for congenital utero-vaginal anomalies. These include: Buttram and Gibbons classification 2 American Fertility Society (AFS) classification Modified Rock and Adam - AFS classification Modified Rock and Adam - AFS classification This classification divid...
Case

Block vertebra C3/4

 Diagnosis certain
Dr Roberto Schubert
Published 24 Nov 2011
57% complete
X-ray
Case

Block vertebra C3/4

 Diagnosis certain
Dr Sajoscha Sorrentino
Published 04 Dec 2011
85% complete
X-ray
Article

Bicuspid aortic valve

Bicuspid aortic valve (BAV) refers to a spectrum of deformed aortic valves with two functional leaflets or cusps which are often unequal in size. They are most often congenital while an acquired bicuspid valve occurs when there is fibrous fusion between the right and left cusps of a pre-existin...
Article

Annular pancreas

Annular pancreas is a morphological anomaly which can cause duodenal obstruction. This condition is important to recognize, as radiologists are frequently the first to make the diagnosis. Epidemiology The incidence is probably 1 in 250, however its incidence is not accurately reported 1. It is...
Article

Mesiodens

A mesiodens (plural: mesiodentes) is the most common supernumerary tooth and is located in the palatal midline between the two maxillary central incisors. Epidemiology It is rare with an estimated prevalence of ~1% (range 0.09 to 2.2%) 3. There is an increased male predilection with a M F rati...
Case

Trapezium exostosis

 Diagnosis certain
Dr Roberto Schubert
Published 22 Feb 2012
78% complete
MRI
Article

Meckel diverticulum

Meckel diverticulum is a congenital intestinal diverticulum due to fibrous degeneration of the umbilical end of the omphalomesenteric (vitelline) duct that occurs around the distal ileum. It is considered the most common structural congenital anomaly of the gastrointestinal tract. Epidemiology ...
Article

Circumaortic left renal vein

Circumaortic left renal vein, also known as circumaortic renal collar is an anomaly of left renal vein when a supernumerary or accessory left renal vein passes posterior to the aorta, apart from the normal renal vein passing anterior to the aorta. This anomaly is potentially hazardous, if unreco...
Case

Bilateral persistent median artery of the forearm with unilateral bifid median nerve

 Diagnosis almost certain
Dr Maulik S Patel
Published 12 Apr 2012
74% complete
Ultrasound
Article

Retroaortic left renal vein

Retroaortic left renal vein (RLRV) is a normal anatomical variant where the left renal vein is located between the aorta and the vertebra and drains into the inferior vena cava. Its recognition is important in order to avoid complications during retroperitoneal surgery or interventional procedu...
Article

Renal vein anomalies

There are several variations in renal venous anatomy. Some of these are specific to the left renal vein. Left renal vein anomalies are generally classified into four types 2: type I  the ventral preaortic limb of the left renal vein is obliterated, but the dorsal retroaortic limb persists and...
Case

Abnormal renal vascular impression on intravenous pyelogram

 Diagnosis possible
Dr Mohammad Osama Yonso
Published 07 May 2012
41% complete
X-ray
Article

Empty sella

An empty sella, also known as an empty pituitary fossa, is a relatively common incidental finding and posed more of a diagnostic problem before modern cross-sectional imaging. In addition to being incidental, a well-established association with idiopathic intracranial hypertension is also recogn...
Article

Empty sella

An empty sella, also known as an empty pituitary fossa, is a relatively common incidental finding and posed more of a diagnostic problem before modern cross-sectional imaging. In addition to being incidental, a well-established association with idiopathic intracranial hypertension is also recogn...

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.