RESUMO
According to the World Health Organization, medulloepithelioma belongs to the embryonal neoplasm entity. It is a very rare, highly malignant tumor typically affecting infants and young children. Usually, the tumor arises in the eye or in the central nervous system; a peripheral location has been rarely reported without an established treatment. The recognition and separation of this neoplasm from other differential tumors are mandatory for better understanding of its biology and determination of optimal treatment. This paper reports a case of an ectopic intrapelvic medulloepithelioma with liver metastasis in a 3-year-old girl.
RESUMO
Karyomegalic interstitial nephritis is a singular type of progressive chronic interstitial nephritis. The pathogenesis of this disease is unknown. The present study reported the case of a 22-year-old man who presented with a long history of recurrent upper respiratory tract infection episodes secondary to bronchiectasis and with progressive renal failure. Renal biopsy revealed chronic tubulointerstitial nephritis and a surprisingly marked karyomegaly specifically of the tubular epithelium.