Case Report: A rare case of oesophageal cellulitis caused by Klebsiella pneumoniae: diagnosis, management, and literature review

infection. Following comprehensive treatment, including acid suppression, the administration of effective antibiotics, mucosal repair, nutritional support, and appropriate endoscopic debridement to facilitate drainage, the patient's symptoms and endoscopic findings significantly improved, and the development of severe complications, such as oesophagotracheal or oesophagomediastinal fistulae, was avoided. This case highlights the need to consider bacterial infection in the differential diagnosis of atypical oesophageal lesions in immunocompromised hosts and emphasises the importance of pathogen-directed, precise anti-infective therapy.