This pregnancy is remarkable for a maternal past history of Crohn's disease, with two exacerbations during this pregnancy, requiring hospitalization.
 The patient has had a small bowel obstruction. 
(ROOT (S (NP (DT This) (NN pregnancy)) (VP (VBZ is) (ADJP (JJ remarkable)) (PP (IN for) (NP (NP (DT a) (JJ maternal) (JJ past) (NN history)) (PP (IN of) (NP (NN Crohn) (POS 's) (NN disease))))) (, ,) (PP (IN with) (NP (CD two) (NNS exacerbations))) (PP (IN during) (NP (DT this) (NN pregnancy))) (, ,) (S (VP (VBG requiring) (NP (NN hospitalization))))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBZ has) (VP (VBN had) (NP (DT a) (JJ small) (NN bowel) (NN obstruction)))) (. .)))
( ( This pregnancy ) ( ( ( ( ( ( ( ( is remarkable ) ( for ( ( a ( maternal ( past history ) ) ) ( of ( Crohn ( 's disease ) ) ) ) ) ) , ) ( with ( two exacerbations ) ) ) ( during ( this pregnancy ) ) ) , ) ( requiring hospitalization ) ) . ) )
( ( The patient ) ( ( has ( had ( a ( small ( bowel obstruction ) ) ) ) ) . ) )