A case of primary lung metastatic pancreatic tumor resected following chemoradiotherapy

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  • 化学放射線治療後に切除した肺原発転移性膵腫瘍の1例

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Abstract

<p>We observed a case of pancreatic metastasis of lung cancer being resected following chemoradiotherapy and reported with a review of the literature. The patient was a 60-year-old man and previously underwent an upper lobectomy of the right lung for the primary lesion and chemoradiotherapy for the metastatic lesion in the lower lobe of the right lung. During the follow-up period, positron emission tomography-computed tomography scan revealed a tumor in the pancreatic body, which was a hyperechoic mass on endoscopic ultrasonography (EUS) and hypervascularity on Sonazoid angiography. Fine needle aspiration cytology under EUS revealed dense growth of tumor cells with increased nuclear chromatin, markedly atypical nuclei, and eosinophilic sporangia. Immunostaining showed CK7 (+), CK20 (−), TTF-1 (+), and napsin A (+). He was diagnosed with pancreatic metastasis of lung cancer, underwent preoperative chemoradiotherapy followed by distal pancreatectomy and splenectomy, and discharged without perioperative complications. The right lower lobe metastasis of lung cancer was detected during an outpatient visit following chemoradiotherapy. However, he was found rectal cancer and considered a scheduled surgery. Forty-two months postoperatively, he was found dead at home;the cause of death was shock due to extreme dehydration.</p>

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