Algorithm for Diagnosis of Diffuse Cystic Lung Disease (DCLD) Round, smooth cysts with normal lung parenchyma in a diffuse distribution - LAM Lentiform/elliptical cysts abutting pleura & vessels in a basilar predominant distribution - BHD Bizarre/irregular cysts along with nodules & cavities in an upper zone predominant distribution - PLCH Round cysts of varying size. May have associated ground glass attenuation, septal thickening & nodules. Diffuse distribution - LIP/FB, LCDD, SS Cyst pattern not consistent with previous presentations - ILD, trauma, metastatic neoplasm, smoking related #Diffuse #Cystic #Lung #Disease #DCLD #pulmonary #Algorithm #Diagnosis #differential
