“…Although it has not been supported by serial endoscopic studies in individual patients, this progression of the lesions could explain the variability of the findings [6], as peptic-like inflammation [16], small discrete ulcers [15], volcano ulcers [l, 71, multiple coalescent ulcers, and pseudomembraneous esophagitis have all been described [HI. This variability is compounded by the fact that other opportunistic microorganisms, mostly cytomegalovirus and Cundidu [24], can also cause esophagitis in immunocompromised patients, either alone or in combination [3,51. Biopsies should, therefore, be taken in such cases for histological examination, viral cultures and, ideally, immunohistochemistry.…”