Abstract

Hemorrhagic cystitis (HC) secondary to BK polyomavirus (BKPyV) is a frequent complication related to allogenic stem cell transplantation. With an important morbidity and mortality, this disease doesn’t have a stablished standard treatment or prophylaxis strategies. At this moment, the supportive therapies approved to treat included hyperhydration, forced diuresis and transfusion support. Cidofovir is a nucleotide analog of deoxycytidine monophosphate against DNA viruses and it has been described for the treatment of BKPyV-HC, but at this moment, is not a front-line therapy. We report a successful case after the use of Cidofovir without Probenecid. No adverse effect was developed under the treatment, and after 4 weeks of treatment, the patient achieved an excellent response.

Highlights

  • BK polyomavirus (BKPyV) is a challengo ing complication in patients with hematoN logic disease undergoing hematopoietic bone marrow aspirate for reevaluation showed positive metabolic residual disease (0.53%) by immunophenotype, and positive mutated NPM1 with 14.7 copies, diagnosing a relapse of his leukemia

  • At day 82 post-transplant, he went to the emergency room with tenesmus and dysuria without fever and macroscopic hematuria

  • Antibiotic treatment was started without improvement and worsening with the presence of macroscopic hematuria

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Summary

Case Report

Hemorrhagic cystitis (HC) secondary to BK polyomavirus (BKPyV) is a frequent complication related to allogenic stem cell ly transplantation. It was decided to perform an allogeneic bone marrow transplantation of identical HLA sister, and he received prophylaxis to graft versus host disease (GVHD) with cyclosporine and short-term methotrexate. He evolved favorably until day 60 post-transplant, when he showed a cutaneous GVHD that it was resolved with corticosteroids and cyclosporine. Stem cell transplant (HSCT), with a variable Urology service ruling out structural patholprevalence depending of several factors ogy of the genitourinary system The such as age, sex and previous treatments.

Discussion
Findings
Hemorrhagic cystitis after allogeneic
HC secondary to BKPyV is a common

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