pneumoconioses - types
pneumoconioses (except berylliosi) - increased risk for
Caplan syndrome
rheumatoid arthritis and pneumoconiases (coal, asbestosis, silicosis) with intrapulmonary nodules
Asbestosis is associated with (exposure)
pathognomonic lesions of asbestosis (gross)
Ivory white, calcified supreadiaphragmatic and pleural plaques
areas of asbestos plaques
2. pleural plaques
carcinomas associated with asbestosis
2. mesothelioma
asbestosis - bronchogenic ca vs mesothelioma
bronchogenic ca > mesothelioma
asbestosis affect (area)
lower lobes
berylliosis associated with (exposure)
berryllium in
lung Asbestosis - histology
ferruginous (asbestos) bodies: golden-brown fusiform rods resembling dumbbells, found in alveolar septum (visulized using PAS stain), often obtain by branchoalveolar lavage)
ferruginous bodies are found in
alveolar septum
berylliosis affects (area)
upper lobes
berrylliosis histology
noncaseating granoulomas in lung, hilar lymph nodes and systemic organs
berrylliosis treatment
occasionally responsive to steroids
Coal workers’ pneumoconiosis is also known s
black lung disease
Coal workers’ pneumoconiosis affects (area)
upper lobes
Coal workers’ pneumoconiosis - pathophysiology
prolonged coal dust exposure –> macrophages laden with carbon –> inflammation and fibrosis
Anthracosis is caused by
mild exposure to carbon (collection of macrophages laden with carbon)
Anthracosis - symptoms/dound in
asymptomatic condition found in many urban dwellers exposed to sooty air
Anthracosis - occupation
found in many urban dwellers exposed to sooty air
Silicosis is associated with ….(occupation)
Silicosis - pathophysiology
Macrophages respond to silica and release fibrogenic factors, leading to fibrosis. it is thought that silica may disrupt phagolysosomes and impair macrophages
silicosis - increased risk for
2. bronchogenic carcinoma