Items tagged “variant”
426 results found
Article
Anomalous insertion of the medial meniscus
Anomalous insertion of the medial meniscus (AIMM) is an anatomical variation of the insertion of the anterior root of the medial meniscus.
Terminology
Defined as a congenital variation in the insertion of the anterior root of the medial meniscus onto the anterior cruciate ligament (ACL). The...
Case
Radial beak
Published
15 Aug 2020
94% complete
X-ray
Case
Talocalcaneal coalition - non-osseous
Published
16 Jun 2020
92% complete
X-ray
MRI
Case
Rhomboid fossa on both clavicles
Published
06 Oct 2020
94% complete
X-ray
Case
Accessory navicular bone - type II
Published
09 Nov 2020
75% complete
X-ray
Case
Arachnoid granulation
Published
15 Dec 2020
89% complete
MRI
CT
Annotated image
Case
Normal both knees x-ray
Published
08 Mar 2021
85% complete
X-ray
Case
Convolutional markings
Published
17 Mar 2021
50% complete
X-ray
Article
Honeycomb sterna
Honeycomb sterna are considered as a rare developmental variant of the sternum, resulting from unfused lateral ossification centers of the sternebrae, which gives a honeycomb configuration of the mesosternum. Usually asymptomatic and discovered incidentally during a routine exam of the chest.
Article
Absent azygos vein
An absent azygos vein is a very uncommon variant in which the azygos vein fails to develop. In cases of agenesis of the azygos vein, the hemiazygos and accessory hemiazygos veins play an important role in venous drainage, accounting for drainage of both the right and left intercostal veins 1-3.
...
Article
Accessory flexor digitorum superficialis indicis muscle
An accessory flexor digitorum superficialis indicis muscle is an unusual accessory muscle of the hand and wrist and a normal anatomical variant.
Summary
origin: flexor digitorum superficialis tendon near the transverse carpal ligament
insertion: metacarpal head of the index finger near the A1...
Case
Hoffa fat pad herniation
Published
06 Sep 2021
77% complete
MRI
Case
Variant trunks of the anterior external carotid artery branches (diagram)
Published
12 Sep 2021
44% complete
Diagram
Case
Accessory hemiazygos vein variant
Published
11 Feb 2022
95% complete
CT
Case
Duplicated inferior vena cava with complex vascular malformation
Published
07 Jul 2022
98% complete
CT
Article
Athelia
Athelia is a rare congenital condition characterized by the absence of the nipple. This may occur unilaterally or bilaterally.
Associations
Poland syndrome
ectodermal dysplasia 2
Case
Extracranial vertebral artery fenestration
Published
16 Oct 2022
92% complete
CT
Case
Oppenheimer ossicle: illustrations
Published
30 Oct 2022
32% complete
Diagram
Article
Accessory transverse foramen
An accessory transverse foramen, also known as a double transverse foramen, are a second, smaller foramen in the transverse process of typical cervical vertebrae 1. They are smaller than the transverse foramen, and may be unilateral or bilateral. Small studies have suggested a prevalence of 8-...
Article
Persistent sciatic vein
Persistent sciatic vein is one of two known embryonic veins in the lower limb which may persist, the other being the lateral marginal vein. Although both are associated with Klippel-Trenaunay syndrome 1-3, only the lateral marginal vein is also referred to as the Klippel-Trenaunay vein.
The sci...