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Nodular renal blastema in trisomy 13.
Archives of Pathology & Laboratory Medicine
|February 1, 1979
Summary
Nodular renal blastema was found in infants with trisomy 13. Its presence correlated with shorter survival, suggesting it may regress with age and is linked to growth regulation disorders.
Area of Science:
- Pediatric Pathology
- Genetics
- Developmental Biology
Background:
- Trisomy 13 is a severe genetic disorder associated with multiple congenital anomalies.
- Nodular renal blastema (NRB) is a pediatric renal tumor precursor.
- The association between trisomy 13 and NRB has not been extensively studied.
Purpose of the Study:
- To investigate the prevalence and clinical significance of nodular renal blastema in trisomy 13.
- To explore the relationship between NRB and survival in trisomy 13 patients.
- To understand the implications of NRB in trisomy 13 for growth regulation disorders.
Main Methods:
- Retrospective review of autopsy records and materials from 14 karyotype-proved trisomy 13 cases.
- Histopathological examination for the presence and extent of nodular renal blastema.
- Correlation analysis of NRB presence with patient survival and other anomalies.
Main Results:
- Nodular renal blastema foci were identified in 6 out of 14 trisomy 13 cases.
- Patients with NRB survived up to 5 days, while those without NRB survived 6 to 37 days.
- NRB presence did not significantly correlate with other renal or extrarenal anomalies.
Conclusions:
- Nodular renal blastema occurs in trisomy 13 and is associated with reduced survival.
- The findings support a link between NRB and disorders of growth regulation.
- NRB lesions in trisomy 13 likely regress with age, as observed only in very young infants.