[Ancillary diagnostic imaging is useful if there is atypical evidence of appendicitis].

Patients with an atypical presentation of acute appendicitis may benefit from ancillary diagnostic imaging, especially CT. The literature shows a decrease of the number of negative appendectomies with this approach, and other causes are diagnosed in about one third of the patients. In addition, costs were reduced. Ultrasonography is a good alternative in pregnant women and in women with suspected gynaecological pathology.