Two synchronous solid pseudopapillary neoplasms detected only by EUS

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  • EUSが診断に有用であった多発膵solid-pseudopapillary neoplasmの1例

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Abstract

<p>A 74-year-male was seen for detailed examination of a gallbladder tumor. We diagnosed the tumor as adenomyomatosis. Coincidentally, contrast-enhanced computed tomography (CT) scan showed a 20mm mass with poor enhancement in the pancreatic tail. The tumor showed high intensity on T1 and T2-weighted MRI images. EUS showed a hypoechoic solid tumor with calcifications in the pancreatic tail. A 6mm hypoechoic solid tumor not detected by CT scan or MRI was found by EUS. We performed EUS-FNA using a Franseen needle for both lesions. Pathological findings including immunohistochemistry suggested the tumors were solid-pseudopapillary neoplasms (SPN). Cholecystectomy and distal pancreatectomy were performed. Pathological findings of the resected pancreatic lesions showed SPN. Some cases of metachronous multiple or recurrent SPNs have been reported, but multiple synchronous SPNs are rare. Since one of the two lesions was detected only by EUS in this patient, EUS is a useful modality for the preoperative diagnosis of SPN.</p>

Journal

  • Suizo

    Suizo 36 (6), 394-403, 2021-12-28

    Japan Pancreas Society

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