A Case of Bronchial Carcinoid Tumor Showing Bronchial Cast Shadow Due to Endobronchial Growth

DOI 14 References
  • Fukumoto Shin-ichi
    Department of Pulmonary Disease, National Hospital Organization Hokkaido Cancer Center
  • Sugawara Aya
    Department of Pulmonary Disease, National Hospital Organization Hokkaido Cancer Center
  • Sukoh Noriaki
    Department of Pulmonary Disease, National Hospital Organization Hokkaido Cancer Center
  • Harada Masao
    Department of Pulmonary Disease, National Hospital Organization Hokkaido Cancer Center

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  • 気管支内腔の長軸進展により樹枝状陰影を呈した気管支カルチノイドの1例

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Case. An 80-year-old man presented with productive cough. Chest CT scan showed a tree branchlike shadow (bronchial cast shadow) in the apical posterior segment of the left upper lobe. The entire bronchial cast shadow showed hypermetabolism on ^<18>F-fluorodeoxyglucose positron emission tomography(FDG-PET) images. Bronchoscopic examination revealed a smooth polypoid tumor obliterating the left B^<1+2>, which was diagnosed histologically as carcinoid. A left upper lobectomy was performed and pathological examination revealed that the tumor grew in a polypoid manner in the left B^<1+2>, proliferating intraluminally in a peripheral direction along the bronchial branches. In parts, it invaded the pulmonary parenchyma beyond the bronchial wall. Conclusion. It is interesting to note that the entire bronchial cast shadow showed hypermetabolism on FDG-PET images. We reported a comparatively rare case of bronchial carcinoid tumor showing bronchial cast shadow due to endobronchial growth.

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