Part 1: Serosal Surface -- The Pleura -- Part 2: The Mediastinum -- Normal thymus -- Thymoma -- Thymic Carcinoma -- Neuroendocrine Neoplasms -- Mediastinal Germ Cell Tumors -- Mesenchymal Tumor of the Mediastinum -- Mediastinal Lymphoproliferative Disorders -- Miscellaneous Conditions -- Part 3: LUNG: Neoplastic conditions -- Non-small Cell Carcinomas -- Neuroendocrine Neoplasms of the Lung -- Salivary Gland Type Tumors of the Lung -- Biphasic Neoplasms of the Lung -- Benign and Malignant Mesenchymal Tumors of the Lung -- Pulmonary Lymphoproliferative Disorders -- Tumors of Uncertain Histogenesis -- Uncommon Tumors of the Lung -- Part 4: LUNG: Non-neoplastic Conditions -- Interstitial Lung Diseases -- Connective Tissue Diseases Associated Interstitial Lung Disease -- Pneumoconiosis -- Pulmonary Vasculitides -- Emphysema and Cystic Lung Disease -- Airspace Diseases and Pulmonary Nodules -- Infectious Diseases That May Mimic Lung Cancer -- Miscellaneous Conditions -- Iatrogenic Conditions -- Pathology of the lung allograft.