Nierenerkrankung mit kristallinen Ablagerungen von Leichtketten: Diagnostische Urinmikroskopie als flüssige Nierenbiopsie

Translated title of the contribution: Light chain crystalline kidney disease: Diagnostic urine microscopy as the liquid kidney biopsy

R. L. Luciano, E. Castano, G. B. Fogazzi, M. A. Perazella

Research output: Contribution to journalArticle

Abstract

Multiple myeloma (MM) is a plasma cell disorder, which often causes parenchymal kidney disease. Light chain (LC) cast nephropathy represents the most common renal lesion. In some instances, LC crystals precipitate within renal tubular lumens and deposit within proximal tubular cell cytoplasms. Importantly, urine microscopy in such patients can provide insight into the underlying LC-related lesion. Here we present two patients with MM complicated by acute kidney injury (AKI) where LC crystalline casts were observed on urinary sediment analysis. Kidney biopsy revealed acute tubular injury with LC crystal casts within both tubular lumens and renal tubular epithelial cell cytoplasms. These findings suggest that the urinary sediment may be a non-invasive way to diagnose LC crystalline-induced AKI in patients with MM.

Translated title of the contributionLight chain crystalline kidney disease: Diagnostic urine microscopy as the liquid kidney biopsy
Original languageGerman
Pages (from-to)166-171
Number of pages6
JournalNieren- und Hochdruckkrankheiten
Volume44
Issue number4
DOIs
Publication statusPublished - Apr 1 2015

Keywords

  • Acute kidney injury
  • Crystal casts
  • Light chain cast nephropathy
  • Multiple myeloma

ASJC Scopus subject areas

  • Nephrology
  • Internal Medicine

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