14 November 2025
: Case report 
Daratumumab-Based Regimen Significantly Induced Remission of Crystalline Light Chain Proximal Tubulopathy: A Case Report
Challenging differential diagnosis, Unusual or unexpected effect of treatment, Unexpected drug reaction, Rare coexistence of disease or pathology
Xia Zou BCDE 1,2, Kun Wang ACDE 1, Rui Zeng AEFG 1,3*DOI: 10.12659/AJCR.948890
Am J Case Rep 2025; 26:e948890
Figure 2 (A) Periodic acid-Schiff staining shows open capillary loops in the glomerulus, with mild segmental mesangial cell and matrix proliferation; magnification ×40. (B) One glomerulus showed capsular adhesion; magnification ×40. (C) Hematoxylin and eosin staining reveals “crystal” structures within the renal tubules, as indicated by arrows; magnification ×40.