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要旨●患者は70歳代後半,男性.臍部腫瘤の精査にて皮膚科を紹介され受診した.臍部に大きさ約20mm,暗赤色,弾性硬の結節状腫瘤を認めた.臍部皮膚生検を施行し,粘液産生を伴う高分化腺癌組織を認めた.サイトケラチンおよび粘液形質の免疫組織化学的検索に基づき,消化器癌の臍部転移を考え,腹部造影CTと上部消化管内視鏡を施行したところ,胃体上部大彎に1型進行胃癌を認めた.胃生検では臍部腫瘍と同様の高分化腺癌を認め,免疫組織化学染色の特徴も類似していたことより,進行胃癌の臍部転移(Sister Mary Joseph's Nodule)と最終診断した.約2年の比較的長期にわたり全身化学療法を継続し,診断から約25か月後に原病死した.
A 70-year-old man was admitted to the department of dermatology in our hospital with an umbilical tumor. Biopsy of the lesion revealed a well-differentiated adenocarcinoma including mucinous components, with immunohistochemical findings of cytokeratin and mucin. Contrast-enhanced abdominal computed tomography and gastrointestinal endoscopy were performed to examine the primary tumor. Finally, gastrointestinal endoscopy revealed advanced gastric cancer. The umbilical metastasis in such a case is referred to as a Sister Mary Joseph's nodule. The patient underwent several combination chemotherapies for 24 months but died 25 months after presentation.
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