Worm like filling defect is seen In
Erosive gastritis
Esophageal varices
CA esophagus
Schatzki's ring
On USG Thickened sinus, interrupted mucosal folds (earliest sign) Toous radiolucencies of variable size The "worm-eaten" smooth lobulated filling defects Ref: Wolfgang Radiology 2nd edition Pg no : 509
G.I.T