cystine calculus

cys·tine cal·cu·lus

a calculus composed of cystine, soft and faintly radiopaque.
Farlex Partner Medical Dictionary © Farlex 2012

cys·tine cal·cu·lus

(sis'tēn kal'kyū-lŭs)
A soft and faintly radiopaque urinary tract stone composed of cystine.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012