Renal dysplasia of the sacral region: metanephric dysplastic hamartoma of the sacral region.
We believe this to be the third reported case of an unusual congenital sacral tumor-like lesion characterized histologically by the presence of dysplastic and immature renal-like tissue with a predominant glomerular and tubular structure. This lesion appears important in the differential diagnosis of extrarenal nephroblastoma, and should be regarded as a dysplastic overgrowth. An origin from mesonephric or metanephric remnants is suggested.
D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006222:Hamartoma / Q000151:congenital* / Q000473:pathology; D006801:Humans; D007668:Kidney / Q000002:abnormalities* / Q000601:surgery; D007680:Kidney Neoplasms / Q000151:congenital* / Q000473:pathology; D012445:Sacrococcygeal Region