Items tagged “anatomical variant”
63 results found
Article
Accessory fissures of the lung
Accessory fissures of the lung usually occur at the borders of bronchopulmonary segments. They are common normal variants but are less commonly seen on imaging.
Some of the more common accessory fissure include 1:
azygos fissure: most commonly seen accessory fissure
inferior accessory...
Article
Vertical fissure line in the lung
The vertical fissure line commences in or near the costodiaphragmatic recess and heads superomedially towards the hilum and terminates before or at the horizontal fissure. More commonly occurs on the right and may indicate partial volume loss of the lower lobe 1.
Case
Inferior accessory fissure
Published
26 Mar 2013
83% complete
X-ray
Annotated image
Article
Inferior accessory fissure of the lung
The inferior accessory fissure of the lung, also known as Twining's line, divides the medial basal bronchopulmonary segment from the rest of the lower lobe 4.
Epidemiology
This accessory fissure is present in around 12% of people when examined with CT 3and is visible on 8% of PA chest x-rays 4...
Article
Riedel lobe
Riedel lobe is a common anatomical variant of the liver to be aware of because it can simulate a mass. Its misidentification as a pathologic abdominal mass has led to surgery. Pathology can also occur within it (e.g. malignancy or even torsion) and cause atypical hepatic symptoms low in the pelv...
Case
Riedel lobe
Published
28 Mar 2013
91% complete
X-ray
Case
Ossicles of the wrist and hand
Published
28 Jul 2013
16% complete
Annotated image
Case
Aortic arch origin of left vertebral artery
Published
05 Aug 2013
86% complete
CT
Case
Congenital C5-C6 vertebral fusion
Published
08 Aug 2013
69% complete
X-ray
Case
Supra-acetabular fossa
Published
09 Aug 2013
92% complete
Annotated image
MRI
Case
Bilateral congenital radioulnar synostosis
Published
12 Aug 2013
85% complete
Diagram
X-ray
Case
Azygos fissure
Published
16 Jan 2016
85% complete
X-ray
Case
Bilateral cervical ribs (left hypoplastic)
Published
09 Mar 2016
75% complete
X-ray
Annotated image
Case
Sternal foramen
Published
25 Sep 2016
89% complete
CT
Case
Situs inversus totalis with left sided azygos fissure
Published
08 Dec 2016
91% complete
X-ray
Case
Accessory renal artery
Published
04 Apr 2017
95% complete
CT
Case
Os centrale carpi
Published
07 Sep 2017
71% complete
X-ray
Article
Anatomical variants
Anatomical variants represent the deviations from the accepted standard human anatomy as printed in the classic textbooks (e.g. Gray's Anatomy 1), and taught in universities, dissecting rooms and clinical practice.
Terminology
The term "normal anatomical variants" or just "normal variants" is ...
Case
Epiphyseal cortical irregularity
Published
05 Mar 2018
88% complete
X-ray
Article
Anomalous systemic arterial supply to normal lung
Anomalous systemic arterial supply to normal lung is an anatomical variant in which a portion of the lung (usually a basal segment) is supplied by a systemic vessel without a distinct pulmonary sequestration.
Terminology
It was traditionally (perhaps inappropriately since not a true sequestrat...
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