History of acute renal failure.
 The patient has had kidney damage. 
(ROOT (NP (NP (NP (NN History)) (PP (IN of) (NP (JJ acute) (JJ renal) (NN failure)))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBZ has) (VP (VBN had) (NP (NN kidney) (NN damage)))) (. .)))
( ( History ( of ( acute ( renal failure ) ) ) ) . )
( ( The patient ) ( ( has ( had ( kidney damage ) ) ) . ) )