title: [Pulmonary nodular amyloidosis].
abstract: Amyloidosis is a systemic disease caused by extracellular accumulation of amyloid in different parts of the body. Pulmonary involvement is infrequent and nodular amyloidosis is extremely rare. We present the case of a 72-year-old man with chronic obstructive pulmonary disease in whom a 3-cm pulmonary nodule was discovered during routine radiological follow-up. After various complementary investigations failed to identify the etiology of the nodule, surgical excision was performed. Subsequent histopathological study revealed the presence of amyloid deposits with characteristic apple-green birefringence when stained with Congo-red under polarized light microscopy.
authors.affiliation: Servicio de Cirugía General y del Aparato Digestivo, Servicio de Cirugía Torácica, Consorcio Hospital General Universitario de Valencia, Valencia, España. drbruna@comv.es
authors.forename: Marcos Bruna
authors.initials: MB
authors.lastname: Esteban
authors.forename: Antonio Arnau
authors.initials: AA
authors.lastname: Obrer
authors.forename: Antonio Honguero
authors.initials: AH
authors.lastname: Martínez
authors.forename: Míriam Estors
authors.initials: ME
authors.lastname: Guerrero
authors.forename: Antonio Cantó
authors.initials: AC
authors.lastname: Armengod
mesh_terms: D000368:Aged; D000686:Amyloidosis / Q000175:diagnosis; D017809:Fatal Outcome; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis; D008297:Male