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Intern Med ; 61(21): 3271-3275, 2022 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-35370238

RESUMEN

Tumor lysis syndrome (TLS) is a metabolic disorder caused by massive tumor lysis. Hypouricemic agents are administered to prevent TLS-related hyperuricemia and renal failure. We experienced three cases of urine xanthine crystals during TLS in patients with hematologic malignancies who received prophylactic febuxostat. Yellowish and pinkish deposits were observed in urinary tract catheters and urinary bags. Urine microscopy revealed that the deposits were xanthine crystals. In rapid tumor lysis, inhibition of xanthine oxidase can cause xanthine accumulation and urine xanthine crystallization. During TLS, urine xanthine crystals may be overlooked, so careful observation and management are required to avoid xanthine nephropathy.


Asunto(s)
Neoplasias Hematológicas , Neoplasias , Nefrolitiasis , Síndrome de Lisis Tumoral , Humanos , Síndrome de Lisis Tumoral/etiología , Xantina , Alopurinol/uso terapéutico , Microscopía , Urinálisis , Neoplasias Hematológicas/complicaciones , Neoplasias/complicaciones
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