Is pulmonary edema curable?

Depends: Pulmonary edema is a symptom, not a disease or condition. It all depends on what is causing the pulmonary edema. If, for example, due to heart failure, it may be treatable. If due to metastatic lung cancer, it may not.

Depends...: It depends on the underlying cause. There are many causes for pulmonary edema and treatment as well as prognosis depends on the underlying cause.

Yes, but: It depends on the cause. Most pulmonary edema is from a malfunctioning heart which may be treatable with medicine or sometimes surgery on a malfunctioning valve or arteries. Non cardiac pulmonary edema is very dangerous and may or may not be curable depending on the cause.