肺癌と鑑別困難であった肺放線菌症の１例

DOI 被引用文献1件 参考文献14件

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  • Pulmonary actinomycosis; difficult to differentiate from lung cancer.

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A 47-year-old man was admitted because of a tumor shadow on chest X-ray films. Transbronchial lung biopsy specimen showed papillary proliferation of atypical cells. As lung cancer was strongly suspected, a right lower lobecotmy was performed. The histological diagnosis was pulmonary acinomycosis. Actinomycosis is a chronic infectious disease usually caused by Actinomyces israelii. The frequency of pulmonary actinomycosis has been reported to be very low since this disease is often very similar to lung cancer on pathological and radiological findings. As it is also difficult to take biopsy materials by bronchoscopic biopsy, the exact diagnosis of this disease is not easy. In conclusion, proliferation of lymphocytes in pathological findings of pulmonary mass region is suggestive of pulmonary actinomycosis.

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