[Significance of simple abdominal radiography in acute appendicitis].
D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D001064:Appendicitis / Q000000981:diagnostic imaging*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011860:Radiography, Abdominal