title: Severe hyperphosphatemia in a patient with chronic kidney disease and multiple myeloma-to strengthen the case toward renal replacement therapy?
abstract: We report a patient with multiple myeloma and chronic kidney disease who presented with severe hyperphosphatemia in the outpatient clinic without any related symptoms. Initial differential diagnosis: Tumor lysis syndrome or chronic kidney disease. Further work-up revealed pseudohyperphosphatemia. In general, treatment is not necessary if the true phosphate level is within the reference range and the patient is asymptomatic.
authors.affiliation: Division of Nephrology, Department of Internal Medicine, Robert-Bosch-Hospital Stuttgart, Germany.
authors.forename: Joerg
authors.initials: J
authors.lastname: Latus
authors.affiliation: Department of Hematology and Oncology, Robert-Bosch-Hospital Stuttgart, Germany.
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Höring
authors.affiliation: Department of Hematology and Oncology, Robert-Bosch-Hospital Stuttgart, Germany.
authors.forename: Matthias
authors.initials: M
authors.lastname: Voehringer
authors.affiliation: Department of Diagnostic and Laboratory Medicine, Robert-Bosch-Hospital Stuttgart, Germany.
authors.forename: Dieter
authors.initials: D
authors.lastname: Ratge
authors.affiliation: Division of Nephrology, Department of Internal Medicine, Robert-Bosch-Hospital Stuttgart, Germany.
authors.forename: M Dominik
authors.initials: MD
authors.lastname: Alscher
authors.affiliation: Division of Nephrology, Department of Internal Medicine, Robert-Bosch-Hospital Stuttgart, Germany.
authors.forename: Niko
authors.initials: N
authors.lastname: Braun
keywords: Chronic kidney disease; hyperphosphatemia; multiple myeloma; pseudohyperphosphatemia