Pneumonia in an elderly Tibetan male caused by Shewanella algae: A case report.

Rationale: Shewanella algae are Gram-negative bacteria that are widely found in aquatic habitats and rarely cause lung infections in inland areas.

Patient Concerns: Cough with light-yellow phlegm for 2 weeks.

Diagnoses: The final diagnosis was bacterial pneumonia.

Interventions: The patient was treated with ceftazidime (2 g, every 12 h) for 1 week.

Outcomes: The patient's lung infection improved and he was discharged.

Lessons: This case highlights a rare occurrence of lung infection caused by Shewanella algae in elderly Tibetan men residing in non-marine environments.