Cystinuria - Stones and Crystals
Fig. 1. Cystine stones (scale 2cm total) .
Fig. 2. Close-up A.
Fig. 3. Close-up B.
Fig. 4. Cystine crystal in urinary sediment (phase contrast, x400).
Fig. 5. Cystine crystal in polarized light showing medium-intensity birefringence (x400).