What kinds of disorders are associated with enlarged echogenic kidneys on a fetal ultrasound?My wife is 29 weeks pregnant. At 20 weeks we went for our first ultrasound. Both kidneys were found to be echogenic but of normal size. In addition, the amniotic fluid was normal. We went for a level 2 ultrasound today at 29 weeks pregnant. They found that both kidneys were echogenic and measured about 47mm in length. I believe at 29 weeks they are supposed to be 31mm. Our doctor is suggesting autosomal recessive polycystic kidney disease. As far as my wife and I know, we are not carriers for this disease, but this has not been confirmed. (No one has had any kidney problems in either of our families.) To make things stranger, my wife has polyhydramnios as opposed to oligohydramnios normally associated with ARPKD. I can also tell you that everything on the ultrasound looks great. You would think everything was 100% okay if it weren't for the kidneys and amniotic fluid. So I'm just wondering if anyone has any ideas on what this could be. Of course we will have genetic counseling to see if we acually are carriers for ARPKD but if this turns up negative, does anyone have any thoughts on this? I'd appreciate anyone's input.
Posted by keriw
Your situation seems to be almost identical to mine. At 20 weeks we were told that the baby's kidneys were echogenic and enlarged. We were given an ARPKD diagnosis and we had an amnio so that the baby could be tested for the mutations. At 29 weeks, the kidneys were still enlarged, although they said they were not as echogenic and I was also diagnosed with polyhydramnios so they were stumped. The pediatric nephrologist said that polyhydramnios does occasionally happen in ARPKD, but it's much rarer (he doesn't think this is ARPKD). So now I am 37 weeks pregnant and the Drs are basically telling us that they simply don't know. Our little guy's kidneys never grew as large as they expected so his lungs are not at all compromised and my amniotic fluid is now back to normal. His kidneys are still in the 90th-95th % in terms of size. With regards to the testing, it didn't give many answers. First off, they did the testing backwards where they tested our blood before they tested the amniotic fluid. They didn't find any mutation in me, but they found an incredibly rare mutation in my husband which they aren't sure has any clinical significance whatsoever. Our son also has my husband's mutation.
I wish you and your wife the best and please keep me posted!
Orignal From: Kidney Disease: What kinds of disorders are associated with enlarged echogenic kidneys on a fetal ultrasound?
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