text: CT may be helpful in the diagnosis and staging of<unk><unk> .
option_0: Anal cancer CT
option_1: Anal cancer MRI
option_2: Anal cancer ultrasound
option_3: Colon polyps physical examination
option_4: Hemorrhoids physical examination
option_5: Anal fissure physical examination
option_6: Stomatitis physical examination
option_7: Colorectal cancer CT