Abnormal return of the pulmonary vein completely is considered as one of the congenital anomalies, accounting for the current average rate, about 1-2%. This type of abnormal pulmonary vein malformation needs to be detected early to have the most effective treatment for the patient.

There are many reasons why you have pain in the back area behind the lungs, this can be related to bone and joint problems or malignant diseases (cancer). According to actual records, there are many patients who go to the hospital because they feel pain in the back area of the lungs and have difficulty breathing, and are diagnosed with lung cancer in surprise and wonder.