title: Primitive neuroectodermal tumour of the central nervous system associated with malignant rhabdoid tumour of the kidney: report of a case.
abstract: Malignant rhabdoid tumour of the kidney is a recently reported tumour presenting in young children. Irrespective of stage and despite intensive chemotherapy these tumours have a poor prognosis, with death usually occurring within a matter of months. A recent report has shown the association of second embryonal tumours of the central nervous system occurring in patients with the renal tumour; most of these second tumours have occurred in the posterior fossa. We report here an infant who presented with a mass in the right groin, showing features of a poorly differentiated sarcoma, possibly rhabdomyosarcoma. Further investigations revealed a tumour in the lower pole of the right kidney which was subsequently shown to be a malignant rhabdoid tumour. The child was given chemotherapy but re-presented at 10 months of age with hydrocephalus, irritability and spasms leading to death. At autopsy a large tumour was found filling the right lateral and third ventricles; histology showed a primitive neuroectodermal tumour with focal astrocytic differentiation. Residual rhabdoid tumour was restricted to a few para-aortic lymph nodes and focal lymphatic micrometastases in lungs. The association of two embryonal neoplasms of possible similar histogenesis is discussed.
mesh_terms: D001932:Brain Neoplasms / Q000473:pathology / Q000556:secondary* / Q000648:ultrastructure; D006801:Humans; D007223:Infant; D007680:Kidney Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D008297:Male; D008854:Microscopy, Electron; D009373:Neoplasms, Germ Cell and Embryonal / Q000473:pathology / Q000556:secondary* / Q000648:ultrastructure; D012208:Rhabdomyosarcoma / Q000473:pathology* / Q000648:ultrastructure