Splenosis Andras Khoor Pulmonary parenchymal (thoracic) splenosis is a rare condition resulting from seeding of splenic tissue in the pleura and/or pulmonary parenchyma after lacerating trauma to the spleen. The…

Endometriosis Rodolfo Laucirica Endometriosis is defined as extrauterine growth of endometrial tissue. It usually is confined to the pelvic cavity but can occur elsewhere, including the pleura. It usually causes…

Specific Forms of Pleuritis Alvaro C. Laga Timothy C. Allen Philip T. Cagle Eosinophilic pleuritis is characterized by abundant eosinophils in the pleural tissue and fluid. Eosinophilic pleuritis occurs as…

Reactive Mesothelial Hyperplasia Alvaro C. Laga Timothy C. Allen Carlos Bedrossian Rodolfo Laucirica Philip T. Cagle Reactive mesothelial cell hyperplasia is often seen in association with pleural effusion, including infections,…

Fibrinous and Fibrous Pleuritis Alvaro C. Laga Timothy C. Allen Philip T. Cagle Pleuritis may exhibit fibrinous exudates on the visceral and/or parietal pleural surfaces. Over time, the fibrinous exudates…

Storage Diseases Alvaro C. Laga Timothy C. Allen Megan K. Dishop Philip T. Cagle Several storage diseases may involve the lungs, and some of these diseases cause significant pulmonary disease….

Metastatic Calcification or Calcinosis Alvaro C. Laga Roberto Barrios Timothy C. Allen Abida K. Haque Metastatic calcification or calcinosis is caused by the deposition of calcium salts in the lung…

Pulmonary Alveolar Microlithiasis Roberto Barrios Alveolar microlithiasis is a rare idiopathic alveolar filling disorder. It is characterized by intra-alveolar accumulation of calcium phosphate, which forms laminated concretions. Microscopically there are…

Cocaine Abuse Alvaro C. Laga Timothy C. Allen Carlos Bedrossian Philip T. Cagle Patients who abuse cocaine, either intravenously or by smoking it (crack cocaine), may have pulmonary disease. Pulmonary…

Intravenous Drug Abuse Alvaro C. Laga Timothy C. Allen Philip T. Cagle Drug abusers may inject drugs intended for oral use. The drugs often contain filler substances such as talc,…