It is possible for lung adenocarcinoma to metastasize within five years. Patients with lung adenocarcinoma are considered clinically cured if they do not develop recurrence or metastasis within five years. Although the possibility of metastasis of lung adenocarcinoma after five years is relatively small, it is still possible, and the chance of metastasis and recurrence after five years is about 20%. Therefore, patients should not take it lightly and still pay attention to maintaining a healthy lifestyle and not staying up late. In the diet should pay attention to a balanced diet, try to light and nutritious, do not eat too greasy spicy food. Good dietary habits are very important to prevent recurrence of the disease. You should also pay attention to regular checkups, half a year or once a year, to monitor the health status of the body, and if there are symptoms of discomfort, you should seek medical treatment in a timely manner.