A Case of Primary Solitary Nodular Amyloidosis of the Lung.

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A 62-year-old asymptomatic man underwent examination of a pulmonary nodule detected by a mass screening. His chest X-ray film, examined at the age of 58 years, showed no abnormal shadows. Chest X-ray film and chest CT showed a solitary nodule without calcification in the right upper lobe (S<SUP>3</SUP><SUB>b</SUB>). On dynamic CT, the nodule showed no evidence of obvious enhancement. On T2-weighted MRI, the nodule showed hypointensity. The nodule was diagnosed pathologically as amyloidosis by CT-guided biopsy, and thoracoscopic surgery was performed. Pathologically the nodule was diagnosed as solitary nodular amyloidosis, and an immunohistochemical study revealed AL λ. type protein. There was no sign of amyloid deposit in other organs, so this case was diagnosed as primary solitary amyloidosis of the lung.
特定非営利活動法人日本肺癌学会の論文