RIU 435 Lecture Notes - Lecture 17: Renal Agenesis, Multicystic Dysplastic Kidney, Horseshoe Kidney
11 Dec 2020
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Infants born with bilateral renal agenesis exhibit potter facies ( flat nose recessed chin, abnormal ears, and wide set eyes) and abnormal of malpositioned limbs: these deformities are caused by lack of amniotic fluid, sono: i) ii) iii) iv) Severe oligohydramnios after 13 to 15 weeks" menstrual age. Persistent absence of urine in fetal bladder (observe for period of 1 hour) Failure to visualize kidneys or renal arteries( use color flow to outline renal arteries) Urogenital abnormalities: incidence of trisomy 18 and 45, x also increased, difficult to diagnosis in utero, bridge of tissue connecting lower poled must be demonstrated for accurate diagnosis, several sonographic clues: i) ii) iii) Transverse images of fetal abdomen demonstrate abnormal lie of kidney. If spine down, connecting isthmus may be seen anterior to aorta. Ipkd may occur as part of a genetic syndrome, such as. Meckel- gruber syndrome or trisomy 13: most severe forms found prenatally and associated with:
