text: Abdominal<unk>  is helpful in the diagnosis of VIPoma. On abdominal<unk> , VIPoma is characterized by a mass which is hypointense on T1-weighted<unk>  and hyperintense on T2-weighted<unk> .
option_0: VIPoma MRI
option_1: VIPoma CT
option_2: Ependymoma CT
option_3: Ependymoma MRI
option_4: Schwannoma CT
option_5: Neuroblastoma CT
option_6: VIPoma echocardiography or ultrasound
option_7: VIPoma physical examination