18.下列關於Acute Appendicitis之敘述，何者正確？ (1) 典型之腹痛是由periumbilical/epigastric region移行至right lower quadrant of abdomen (2) 常有bowel habit change (3) 常有anorexia (4) 身體診察時，在右下腹沒有發現tenderness，即可排除acute appendicitis之診斷 (5) psoas/obturator sign對判斷acute appendicitis之有無極具價值 (6) 使用CT with contrast agent enhancement診斷acute appendicitis之準確率（accuracy）相當高，可達90%
(A)(1)+(2)+(3)
(B)(2)+(3)+(5)
(C)(1)+(3)+(6)
(D)(3)+(4)+(5)
(E)(4)+(5)+(6)