Invasive Mucinous Adenocarcinoma Exhibiting Cavitary Nodular Shadow Scattering to Adjacent Areas: a Case Report

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  • 空洞性結節と周囲への散布陰影を呈した浸潤性粘液性腺癌の1例

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<p>Background. We herein report a case of invasive mucinous adenocarcinoma (IMA) that displayed cavitary nodular shadow scattering to the adjacent areas in the right lower lobe S6. As differentiation from inflammatory lesions was required, the tumor was diagnosed by surgical resection. Case. A 71-year-old man was referred to our hospital for a comprehensive examination of abnormal shadows detected at a lung cancer screening. Computed tomography (CT) revealed a nodular shadow with cavity scattering to the adjacent areas in the right S6. Furthermore, CT images obtained about a year later revealed a growing trend in the cavity nodule in the right S6. Bronchoscopy was performed; however, no definitive diagnosis was obtained. Although inflammatory lesions were suggested, malignancy could not be denied. Finally, IMA was diagnosed by a surgical biopsy. Accordingly, right lower lobectomy was performed. All shadows scattered to the adjacent areas were metastatic lesions within the same lobe of the primary tumor. Conclusions. Imaging findings of IMA are widely known to be similar to those of pneumonia; however, clinicians should be cautious when making a diagnosis based on imaging, as IMA can exhibit cavity nodules, as in the present case. </p>

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  • Haigan

    Haigan 59 (4), 390-394, 2019-08-20

    The Japan Lung Cancer Society

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