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Figure 4.13. Marked abdominal distention in an infant with massive polycystic kidneys. This infant died soon after birth. Infants with polycystic kidneys typically have an autosomal dominant pattern of inheritance in contrast to the autosomal recessive pattern in adult polycystic kidney disease. If little urine is produced, the fetus may exhibit the Potter sequence with fetal compression and pulmonary hypoplasia.

Fetal Polycystic Kidney

Figure 4.14. Radiograph taken 24 hours after contrast medium was given for an intravenous pyelogram. The contrast dye is contained in the hyperplastic dilated tubules without dye noted in the calyces or bladder. The dye was finally excreted several days later.

Figure 4.15. An autopsy specimen of a large infantile polycystic kidney. Note the fetal lobulation of the kidney with the visible cysts.

Figure 4.16. A sagittal section through the same specimen as in Figure 4-15. Cysts are noted throughout the whole kidney with the highest concentration in the medulla. This is the anatomic location of die hyperplastic tubules.

Figure 4.16. A sagittal section through the same specimen as in Figure 4-15. Cysts are noted throughout the whole kidney with the highest concentration in the medulla. This is the anatomic location of die hyperplastic tubules.

Multicystic Kidney Dysplasia

Figure 4.17. Autopsy specimen of an infant showing cystic dysplasia of the kidneys. As compared to multicystic kidneys where there is no renal function, dysplastic kidneys may show some delayed renal function.

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Figure 4.18. This term infant, the product of a breech extraction, presented with marked abdominal distention and respiratory distress. Note the marked hypotonia and "pithed-frog" appearance in a crying infant. Normally, a crying infant does not lie motionless. On examination of the abdomen, a markedly enlarged neurogenic bladder was palpable. This infant had a cervical cord injury at C7 to T1 with associated quadriplegia.

Figure 4.18. This term infant, the product of a breech extraction, presented with marked abdominal distention and respiratory distress. Note the marked hypotonia and "pithed-frog" appearance in a crying infant. Normally, a crying infant does not lie motionless. On examination of the abdomen, a markedly enlarged neurogenic bladder was palpable. This infant had a cervical cord injury at C7 to T1 with associated quadriplegia.

Female Genitalia Deformity

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