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  • Title: Feather duvet lung.
    Author: Inase N, Ohtani Y, Endo J, Miyake S, Yoshizawa Y.
    Journal: Med Sci Monit; 2003 May; 9(5):CS37-40. PubMed ID: 12761461.
    Abstract:
    BACKGROUND: Bird fancier's lung (BFL) is a type of hypersensitivity pneumonitis, which is induced by inhalation of bird related antigens. The diagnosis of BFL induced by feathers is difficult because feathers are generally not recognized as a causative antigen of BFL. We report a female case of chronic BFL presumably due to a feather duvet, which presents as pulmonary fibrosis. CASE REPORT: A 73 year-old woman presented with exertional dyspnea for the last three years. She had raised two pigeons for three years (1971-1973) in her forties and had been using a feather duvet for the last eight years (1992-2000). A chest X-ray showed reticular infiltrates in the both peripheral lung field and an HRCT scan showed scattered consolidation, micronodules, and peribronchial ground-glass opacities. Lymphocyte proliferation to the feather antigen was positive and inhalation provocation test using a bird antigen was also positive. Thoracoscopic biopsy specimens showed organization, cholesterol clefts, alveolitis around terminal and respiratory bronchioles--all of which are consistent with chronic hypersensitivity pneumonitis. Clinical findings have spontaneously improved after she stopped using her feather duvet. CONCLUSIONS: Feather beds including duvets, pillows, and cushions are now popular all over the world. Physicians should be aware of feathers as a cause of BFL since this induction seems to be more prevalent.
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