Cystic Lung Disease
💡TL;DR: Cystic lung disease is a pattern, not one disease; the most common causes are LAM, PLCH, and Birt–Hogg–Dubé. HRCT is the key test to sort causes, with targeted labs like VEGF-D (LAM) or FLCN genetics (BHD) when needed. Treatment depends on the cause: quitting smoking often