Normal variant

Human variability, or human variation, is the range of possible values for any characteristic, physical or mental, of human beings. Frequently debated areas of variability include cognitive ability, personality, physical appearance (body shape, skin color, etc.) and immunology. [Source: Wikipedia ]

May Cause
Accessory epiphyses
Anterior beaked vertebrae in a child
Anterior vertebral scalloping
Asymmetrically enlarged lateral ventricles
Basal ganglion calcification
Bilateral large kidneys
Bilateral small kidneys
Biliary dilatation without jaundice or obstruction
Carpal and/or tarsal fusion
Clinodactyly of fifth finger
Congenital prognathism
Coronal cleft vertebrae
Dense epiphyses of hands and feet
Dense vertical metaphyseal lines
Distended gallbladder in a child
Drumstick distal phalanges
Duodenal dilatation without obstruction
Duodenal wall thickening
Elongated sella turcica
Enlarged gallbladder
Enlarged ileocecal valve
Enlarged papilla of vater
Gastric fold thickening
Incomplete ossification of cranial sutures
Increased cranial convolutional markings
Increased presacral space
Increased retrogastric or retroduodenal space
Infundibular narrowing
J-shaped sella turcica
Large fontanelle
Large vascular grooves of skull
Longitudinal metaphyseal-diaphyseal striations
Medial deviation of upper ureter
Medial proximal metaphyseal erosion of the long bones
Mediastinal lipomatosis
Metaphyseal cupping
Multiple abnormal epiphyses
Narrowed superior orbital fissure
Optic nerve tram-track sign
Posterior vertebral scalloping
Presacral mass
Round vertebrae
Sacrococcygeal mass
Short metacarpal
Short metatarsal
Small anterior fontanelle
Small cerebral ventricles
Small parotid gland
Small sella turcica
Solitary intrinsic duodenal mass
Squaring of vertebral body
Superior mesenteric artery syndrome
Symmetrical anterior rib flaring
Thick heel pad
Thick ribs
Thickened placenta
Transverse dense metaphyseal bands
Triphalangeal thumb
Unilateral hyperlucency of chest
Unilateral large kidney
Unilaterally elevated diaphragm
Wedged vertebra
Wide metaphysis
Wide right tracheal stripe
Widening of duodenal C-loop
Wormian bones