A National Registry on Chinese Patients With Lymphangioleiomyomatosis

This study is building a national registry in China to better understand lymphangioleiomyomatosis (LAM) — a rare lung disease that almost exclusively affects women, where abnormal muscle-like cells grow in the lungs and cause progressive breathing problems — by tracking how the disease develops and responds to treatment over time. **You may be eligible if...** - You are female (any age) - You have a confirmed or probable diagnosis of LAM based on established medical criteria, including the presence of cysts in the lungs on imaging - Your doctor has recommended your inclusion in the registry **You may NOT be eligible if...** - Your diagnosis of LAM has not been confirmed - Lung imaging does not show the characteristic cysts associated with LAM - You have bilateral cystic lung disease but LAM cannot be established as the diagnosis - You have not signed informed consent or cannot be followed up Talk to your doctor to see if this trial is right for you.