Lung, Pleura and Thymus Normal Histology Normal bronchial pattern Embryonal lung Pseudoglandular phase Canalicular phase Terminal sac phase Adult lung Normal bronchial epithelium Normal bronchus (child) Normal bronchiole Obstructive Lung Disease Asthma Charcot-Leyden Crystals Emphysema Bullous emphysema Bronchiectasis Infectious Lung Diseases Cryptococcosis Aspergillosis Schistosomiasis Blastomycosis Rocky mountain spotted fever Actinomycosis Nocardiosis Candidiasis Histoplasmosis Sporotrichosis Toxoplasmosis Measles (Rubeola) pneumonia Pneumonia (Incomplete resolution) Klebsiella pneumoniae Pneumocystis pneumonia Adenoviral pneumonia Cytomegalovirus Bronchopneumonia Interstitial Lung Diseases Honeycomb lung Nonspecific interstitial lung disease (NSIP) Cryptogenic organizing pneumonia Desquamative interstitial pneumonia Usual interstitial pneumonia (UIP) Rheumatoid arthritis Sarcoidosis Goodpasture syndrome Hypersensitivity pneumonitis Vascular Diseases Plexiform lesion Hemorrhagic infarct Thromboembolus Amniotic fluid embolism Tumor embolism Idiopathic pulmonary hemosiderosis Arteriole in septum Wegener Granulomatosis Pediatric Diseases Congentital cystic adenomatoid malformation Pulmonary hypoplasia Congenital pulmonary lymphangiectasis Bronchial pattern in situs inversus Bronchopulmonary disease Hyaline membrane disease Pulmonary interstitial emphysema Chronic Granulomatous Disease (CGD) Peripartum aspiration of maternal blood Meconium aspiration Neoplasia Adenocarcinoma Bronchiolar carcinoma Carcinoid tumor Mesothelioma Squamous cell carcinoma (cytology) Bronchogenic carcinoma with lung abscess Endolymphatic stromal myosis (from uterus) Basaloid carcinoma Small cell neuroendocine carcinoma (Thymus) Thymoma Miscellaneous Aspiration pneumonia Lymphangioleiomyomatosis Foreign body Hamartoma Eosinophilic granuloma Pulmonary Alveolar Proteinosis (PAP)