Anatomic variations
Anatomic variations(normal anatomic variations)
목차
[숨기기]Ossicles
Spine
- Lumbosacral transitional vertebra(LSTV)
- Block vertebra
- Atlantoaxial assimilation
- Neural arch cleft
- Os odontoideum, condylus tertius, posterior onticulus
Hip
- Herniation pit: usually bilateral, 5~15mm sized, oval or round shaped, lucent lesion with thin sclerotic rim at the anterosuperior femoral neck.
- supraacetabula fossa(pseudo defect of acetabular cartilage)
Pelvis
- ischiopubic synchondrosis
- a temporary hyaline cartilaginous joint, occurring in childhood prior to fusion of the ischial and pubic bones
Skull
PNS
Sacroiliac joint
Head and neck
- Accessory parotid gland: masseter muscle 옆의 mass 처럼 보일 수 있음. neurogenic tumor 등과 감별 필요.
Brain
- BESS(Benign enlargement of the subarachnoid space): interhemispheric width >5mm
Vessel
- aberrent arteries
- intracranial artery fenestration: segmental duplication
- The artery of Percheron
- posterior cerebral circulation characterized by a solitary arterial trunk
- supplies blood to the paramedian thalami and the rostral midbrain bilaterally.