Ch. 64 Test Flashcards
Kidneys should be sonographically documented in all fetuses beginning at _____ weeks’ gestation
18
Protrusion of the posterior wall of the urinary bladder, which contains the trigone of the bladder and the ureteric orifices, is called
exstrophy of the bladder
A condition in which both ovarian and testicular tissues are present is
hermaphroditism
Sonographic findings in complete renal agenesis include
oligohydramnios, absence of urine in the fetal bladder, small thorax
Renal agenesis, oligohydramnios, pulmonary hypoplasia, abnormal facies, and malformed hands and feet may be found in
potter syndrome
Which one of the following characteristics of multicystic dysplastic kidney disease is most common
multiple non communicating cysts of variable size
Which site of hydronephrosis in the neonate is the most common
ureteropelvic junction (UPJ)
What findings are observed in hydronephrosis
anteroposterior (AP) renal pelvic diameter is greater than 5 to 10mm, rim of renal parenchyma is preserved, calyceal distention is seen with central pelvis communication
A dilated bladder with a “keyhole” appearance is most likely which one of the following conditions
posterior urethral valve obstruction
Sonographic findings in prune belly syndrome include
oligohydramnios, pulmonary hypoplasia, fetal ascites
The renal system fails to develop in
renal agenesis
The permanent kidneys arise from the
metanephros
The ureteric bud gives rise to
ureter, renal pelvis, calyces
The kidneys initially lie in what positions
very close together in the pelvis
The normal AP diameter of the renal pelvis at 20 weeks gestation should not exceed ______ mm
4
An anechoic cystic structure within the fetal bladder is most likely a
ureterocele
The most likely cause of bilateral hydronephrosis in the fetus is what
bladder outlet syndrome
Normal amniotic fluid volume cannot exclude renal agenesis before ______ weeks gestation
14 to 16
Sonographic findings in posterior urethral valve obstruction includes
hydroureter, oligohydramnios, hydronephrosis
What is incorrect about a fetal ovarian cyst
a fetal ovarian cyst has no diagnostic significance
When the fetal kidneys appear enlarged and echogenic, the sonographer should suspect what condition
infantile polycystic disease
The testes are not visible within the scrotal sac until approximately ______ weeks gestation
28
The genital and urinary systems are derived from
intermediate mesoderm
______ appears in the thoraco-lumbar region of the embryo at the end of the 4-6th week
mesonephros
______ develops in the cervical region of the embryo in the 4th week
pronephros
Which mesoderm forms the urogenital ridge
intermediate
What is the functional unit of the kidney
nephron
The renal tubules of the ______ never function at all
pronephros
Which type of polycystic disease results in renal failure in adulthood
autosomal dominant
What week does renal function begin
12