[Individual and age-related features of the extrinsic arteries of the adrenal glands in newborn infants].

The origin, form, dimensions and position of the main and accessory adrenal arteries have been investigated in 192 preparations of the adrenals obtained from corpses of newborns with body mass of 2,500-4,800 g. The adrenal vessels are injected with thicken and roentgenocontrast masses, that is followed with roentgenography, photography and preparation. The main adrenal arteries occur: superior--in 100% (from 2 to 19), middle--in 75% (from 1 to 4), inferior--in 66% (from 1 to 6). The accessory arteries are noted in 66%: inferior--in 44%, middle--in 15%, superior--in 6%. The number of the accessory arteries is from 1 to 6. The greatest variability in number demonstrate the main superior (Wn-1323) and the accessory inferior (Wn-900) arteries. There is not any essential difference in the total number of right-sided and left-sided arteries. There are two extreme forms of the organ's blood supply: the aortal (13%) and the renal (3%). A mixed form (84%) is observed more often when all the three groups of the adrenal arteries participate. The diameter of the main adrenal arteries varies: the superior--0.1-0.75, the middle--0.1-1.5, the inferior--0.1-1.5 mm. The summation diameter of all the adrenal arteries that approach the organ is 2.2-6.2 mm. Right-sided and left-sided differences are not significant.