• Internal medicine · Feb 2021

    Case Reports

    A Case of Pulmonary Sparganosis: Tunnel Sign and Migrating Sign on Computed Tomography.

    • Mitsuru Matsuki and Akira Higashiyama.
    • Department of Radiology, Kindai University Faculty of Medicine, Japan.
    • Intern. Med. 2021 Feb 15; 60 (4): 601-604.

    AbstractA 77-year-old woman presented at our hospital to undergo a close examination of an abnormal shadow which was observed on a chest radiograph. Contrast-enhanced computed tomography (CT) images in the lung window revealed a tortuous tunnel structure (tunnel sign), which was suspected to be the migration path of a parasite. Furthermore, CT images in the mediastinal window showed a linear filling defect from the right inferior pulmonary vein to the venous ostium in the left atrium (migrating sign), which was suspected to be a migrating parasite in the pulmonary vein. Tunnel and migrating signs on chest CT images were helpful in diagnosing pulmonary sparganosis.

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