title: Anaplastic Wilms' tumor. Initial diagnosis by fine needle aspiration.
abstract: The diagnosis of a diffusely anaplastic Wilms' tumor in a ten-month-old child was first suggested by cytologic and histologic study of a fine needle aspirate. The mesenchymal component was predominant (75%) and exhibited some cells with hyaline, periodic acid-Schiff-positive, intracytoplasmic droplets. Foci of clear-cell carcinoma were also present. Only one case showing this histologic pattern in this unusual variant of Wilms' tumor has been reported previously.
authors.affiliation: Department of Pathology, María Ludovica Children's Hospital, La Plata, Argentina.
authors.forename: R
authors.initials: R
authors.lastname: Drut
authors.forename: D
authors.initials: D
authors.lastname: Pollono
mesh_terms: D000708:Anaplasia; D001707:Biopsy, Needle; D006801:Humans; D007223:Infant; D007680:Kidney Neoplasms / Q000473:pathology* / Q000601:surgery; D009396:Wilms Tumor / Q000473:pathology* / Q000601:surgery