{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,28]],"date-time":"2025-08-28T00:05:22Z","timestamp":1756339522185,"version":"3.44.0"},"reference-count":16,"publisher":"BMJ","issue":"1","license":[{"start":{"date-parts":[[2021,1,5]],"date-time":"2021-01-05T00:00:00Z","timestamp":1609804800000},"content-version":"unspecified","delay-in-days":4,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2020,11,16]]},"published-print":{"date-parts":[[2021,1]]},"abstract":"<jats:p>A 58-year-old woman with chronic lymphocytic leukaemia (CLL) presented with 2\u2009weeks of fever and haematuria following chemo-immunotherapy. CT scan showed thickening of her left urethra and bladder, suggesting pyleo-ureteritis with cystitis. The patient was initially treated for suspected bacterial urinary tract infection although repeated blood and urine cultures remained negative. She then received multiple transfusions for chemotherapy-induced pancytopenia while her urinary symptoms did not improve. Due to her immunocompromised status, she was tested for viral infection, which revealed, BK polyomavirus, adenovirus and cytomegalovirus in serum and urine. Cidofovir was initially administered to treat these infections while ganciclovir was used with filgrastim due to neutropenia. The patient subsequently improved. This case represents a diagnostic and therapeutic challenge due to the multiple concurrent viral infections causing haematuria as well as the combined post-chemo-immunotherapy and antiviral myelotoxicity in a CLL patient.<\/jats:p>","DOI":"10.1136\/bcr-2020-235981","type":"journal-article","created":{"date-parts":[[2021,1,5]],"date-time":"2021-01-05T12:18:50Z","timestamp":1609849130000},"page":"e235981","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["Concurrent BK polyomavirus, adenovirus and cytomegalovirus infections in a patient treated for chronic lymphocytic leukaemia"],"prefix":"10.1136","volume":"14","author":[{"given":"Michelle","family":"Kwok","sequence":"first","affiliation":[{"name":"Division of Internal Medicine, McGill University Health Centre, Montr\u00e9al, Quebec, 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