<prompt> On endoscopy there is Serpiginous Ulcers in Distal Esophagus with otherwise normal mucosa seen- Diagnosis isHerpes SimplexCandidiasisPill inducedCMV  <response>: CMV Esophagitis: - Seen in Graft versus host disease following BM transplantation. Endosocopy shows characteristic - Geographical or Serpentine border. Ref:- Bailey and Love 27th Edition; Pg num:- 1104 