The video elaborates three pulmonary diseases which are berylliosis, silicosis and farmer's lung. The video explains the pathology of the mentioned diseases in a well-described way. TIMELINE: 0:00 Introduction 1:30 Coal worker pneumoconiosis 2:14 Difference between the two types of Coal worker pneumoconiosis 3:42 Silicosis 4:11 Pathophysiology 4:38 Types 5:15 Clinically 5:18 Complications 6:14 Diagnosis 6:58 Management 7:50 Berylliosis 4:32 Sources 8:42 Pathogenesis 9:34 Diagnosis 10:17 Complications 11:08 Management 11:48 Clinical pearls 12:19 Mnemonics 12:31 Risk factors 12:50 Disease that affect the upper lung