Decoy cells confirmed as polyoma virus-infected cells by immunocytochemical study with preserved urine sediments.-report of a case

Abstract

We report a case in which Decoy cells were confirmed as polyoma virus-infected cells by immunocytochemical study with preserved urine sediments. The patient was a 15-year -old female who had received chemotherapy for neuroblas-toma. Her urine sediments revealed atypical cells having hyperchromatic and ground-glass nuclei. For further examination, we preserved the sediment in Yagi's solution. Subsequently we immunocytochemically examined the atypical cells and demomstrated these cells (Decoy cells) to be polyoma virus-infected cells.
We are certain that the preservation of urine sediments is useful for clarifying the nature of unknown atypical cells.