​Renal stones

A) ​anuria
B) ​calculi
C) ​calyx
D) ​cystitis
E) ​dysuria
F) ​fistula
G) ​graft
H) ​lithotripsy
I) ​nephron
J) ​oliguria
K) ​peritoneal
L) ​ptosis
M) ​residual
N) ​secretion
O) ​stricture
P) ​ureter
Q) ​urethra
R) ​urinary meatus

Calculi

Hardened deposits of minerals and salts that form in the kidneys or other parts of the urinary tract.

Renal Stones

Hard deposits made of minerals and salts that form inside the kidneys, also known as kidney stones.

Kidney

An organ in vertebrates responsible for filtering waste products from the blood and excreting them as urine.