Assertion: acute pyelonephritis | /r/HasProperty | severe
Facets:
value: extremely
type: DEGREE
value: in the presence of obstruction
type: OTHER
Source sentences:
text: In the presence of obstruction (stone, tumor, bladder neck obstruction, enlarged prostate), acute pyelonephritis can be extremely severe and recalcitrant to treatment, and may progress to renal abscess.