Light micrograph of kidney biopsy with atazanavir crystals within tubular lumen and renal parenchyma

Renal biopsy from a patient treated with atazanavir demonstrates crystals within the tubular lumen and renal parenchyma.
(A) Needle-shaped atazanavir crystals within the tubular lumen.
(B) Atazanavir crystals within the renal parenchyma associated with granuloma formation.