Perlman syndrome: four additional cases and review
H T Henneveld1, R A van Lingen, B C Hamel
1Wilhelmina Children's Hospital, Utrecht, The Netherlands.
Insights
Perlman syndrome, a rare genetic disorder, involves kidney abnormalities and Wilms tumor. New cases highlight varied symptoms and suggest early kidney changes may precede tumor development.
Area of Science:
- Genetics
- Pediatrics
- Oncology
Background:
- Perlman syndrome is a rare genetic disorder characterized by nephromegaly, renal dysplasia, Wilms tumor, macrosomia, cryptorchidism, and facial anomalies.
- First described in 1973, it has been observed in twelve children across six families, with autosomal recessive inheritance suggested.
- The condition carries a severe prognosis, often resulting in neonatal death.
Observation:
- This report details four new cases of Perlman syndrome from three families, with non-consanguineous parents.
- Observed manifestations included cardiac defects, hepatic fibrosis, haemangioma, volvulus, intestinal atresia, agenesis of the corpus callosum, and cleft palate.
- Two premature siblings presented with nephromegaly but lacked hamartomas or nephroblastomatosis.
Findings:
- The study expands the known clinical spectrum of Perlman syndrome with novel and rarely reported features.
- The findings support the hypothesis that dysplastic medullary parenchyma in preterm infants may progress to nephroblastomatosis and Wilms tumor.
- All reported children succumbed within their first year of life.
Implications:
- Early identification of renal abnormalities in preterm infants may aid in predicting the risk of developing Perlman syndrome.
- Further research into the genetic and developmental pathways of Perlman syndrome is warranted.
- Understanding the progression from renal dysplasia to Wilms tumor could inform future therapeutic strategies.
Abstract:
Perlman syndrome was first described in 1973 and comprises nephromegaly with renal dysplasia and Wilms tumor, macrosomia, cryptorchidism, and multiple facial anomalies. Polyhydramnios and hypoglycaemia are often found. Twelve children have been described from six different families. Five came from one family whose Yemenite Jewish parents were second cousins. Autosomal recessive inheritance has been suggested. Prognosis is severe with neonatal death in most children. We report on 4 new cases of Perlman syndrome from 3 families; all parents were non-consanguineous. Some of the observed manifestations have been described only once in this syndrome (cardiac defect, hepatic fibrosis with portoportal bridging, haemangioma) or never before (volvulus, intestinal atresia, and agenesis of the corpus callosum in 1 patient, a cleft palate in another). All children died within the first year. The 2 sibs were born prematurely with nephromegaly but without hamartomas or nephroblastomatosis. This is consistent with the hypothesis that dysplastic medullary parenchyma in preterm infants develops into nephroblastomatosis and hamartoma and eventually Wilms tumor.
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