iam suffering gastric problem.indigestion.last 3 year.i went asian institute gastroentrology.they suggest ultra sound and endoscope all reports normal.but i feel gas problem and indigestion.i am using omez 20 mg daily morning.recently i went meet another doctor he suggest ultrasound and sgpt sgot,b12,bloodtest.all are normal.in ultrasound test hypoecoic lobuler lesion in the mid mesentery 4.2*1.9 node suggest ct scan.i didnt get any pain in my abdomen,no vomthing.if i press my stomach i listen sounds.no motion problem.only gas and indigestion.why doctor suggest ct scan. is this cancer.2years back i had viral infection.what is the normal size of abdomen nodes.