Multicystic Dysplastic Kidneys; Spontaneous Regression Demonstrated With Ultrasound
Radiology 160(1): Oct 1986; 23-26
View Original Source →Abstract
Two cases of unilateral multicystic kidney followed an atypical course, the non-communicating anechogenic images on ultrasound examination that projected into the renal region disappearing within several months and the infants’ condition appearing satisfactory at 2-year follow-up review. Analysis of the literature showed the increasing frequency of this outcome, but persistence of a multicystic kidney after the first year of life requires its surgical removal because of risk of degenerative changes.
Case Details
Personal Characteristics
Nine neonates
Clinical Characteristics
Spontaneous regression of a multicystic dysplastic kidney (mdck) was witnessed by means of repeated ultrasound (us) examinations
Remission Characteristics
Marked reduction in size or complete disappearance of the mcdk was observed on serial us examinations
Treatment & Mechanisms
Proposed Remission Mechanisms
Not discussed
Clinical Treatment
Three neonates underwent surgical exploration. No trace of a kidney, renal artery, or ureter was found in two. A small mcdk was removed in the third patient.
Additional Notes
Because malignant transformation of an MCDK is rare and because US provides a means of serial assessment, the authors believe a more conservative, nonsurgical approach is appropriate and recommend an observation time of 1 year before deciding on surgical intervention, unless other problems necessitate surgical removal of the MCDK.