Congenital renal tract malformations. A comparison of two consecutive autopsy series during an eleven-year period.

In a previous paper, a significant recent increase in the incidence of congenital renal tract malformations discovered in perinatal autopsies at the Royal Women's Hospital, Brisbane, was reported. In an attempt to throw some light on the cause of this increase, both the types of renal tract malformations and the associated abnormalities in other systems observed during the past 15 months were compared with those observed in the same institution during the preceding nine years; no significant differences were detected. However, when these groups were compared with similar studies elsewhere, there were obvious differences in both the type of renal tract lesion discovered and in their associated anomalies.