'폐렴'을 한자 뜻대로 lung inflammation으로 옮기면 병명으로는 어색해요. 폐렴은 'pneumonia'라고 해요.
잘못된 예: The doctor told me that I have a lung inflammation, so I have to stay in the hospital.
올바른 예: The doctor told me that I have fluid in my lungs, so I have to stay in the hospital.