| Japanese |
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| Title | 67Ga-scan, 18F-FDG-PETが有用であった稀な後腹膜腔原発yolk sac tumorの腹膜播種の一例 |
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| Subtitle | 症例報告 |
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| Authors | 岡村光英*, 河辺譲治**, 小橋肇子**, 細川知紗**, 下西祥裕*, 越智宏暢*, 和田誠次***, 岩田裕之**** |
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| Authors(kana) | |
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| Organization | *大阪市立大学医学部核医学研究室, **放射線科, ***泌尿器科, ****第一病理 |
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| Journal | 核医学 |
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| Volume | 32 |
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| Number | 5 |
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| Page | 495-499 |
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| Year/Month | 1995/5 |
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| Article | 報告 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」後腹膜腔原発germ cell tumorなかでもyolk sac tumorはきわめて稀とされている. 今回, われわれは26歳男性の後腹膜腔原発yolk sac tumor手術後の腹膜転移例を経験したので報告する. 原発巣手術後α-fetoprotein上昇時, 転移部位の検索目的で67Ga-scanを施行したところ, 骨盤部を中心に腹部まで異常集積が認められ, 67Ga-scanが転移巣の検出に有用であった. さらに18F-FDGによるPET検査を施行し, 病巣の拡がりを的確に把握できた. 「I. はじめに」生殖腺外germ cell tumorの発生部位としては縦隔についで後腹膜が挙げられるがその発生頻度は低い. α-fetoprotein(以下AFPと略す)はgerm cell tumorの一種であるyolk sac tumorの存在, 転移巣の存在の判定, 治療効果判定のよい指標とされている. |
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| Practice | 臨床医学：一般 |
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| Keywords | Retroperitoneal germ cell tumor, Yolk sac tumor, 67Ga-scan, 18F-FDG PET, Peritoneal dissemination. |
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| English |
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| Title | A Case of Peritoneal Metastasis from Retroperitoneal Yolk Sac Tumor Diagnosed by 67Ga-scan and 18F-FDG-PET |
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| Subtitle | Case Report |
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| Authors | Terue OKAMURA*, Joji KAWABE**, Toshiko KOBASHI**, Chisa HOSOKAWA**, Yoshihiro SHIMONISHI*, Hironobu OCHI*, Seiji WADA***, Hiroyuki IWATA**** |
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| Authors(kana) | |
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| Organization | *Division of Nuclear Medicine, **Department of Radiology, ***Department of Urology, ****Department of Pathology, Osaka City University Medical School |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 32 |
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| Number | 5 |
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| Page | 495-499 |
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| Year/Month | 1995/5 |
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| Article | Report |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | Yolk sac tumor is one of the histological types of germ cell tumors. Primary retroperitoneal germ cell tumors are extremely rare neoplasms. We report a case of peritoneal metastasis after resection of a primary retroperitoneal germ cell tumor. The peritoneal metastases were detected by 67Ga-scan when CT did not suggest metastatic lesions while the level of alphafetoprotein was still elevated. The 67Ga-scan showed multiple hot spots in the abdomen and pelvis 72 hours after intravenous injection of the tracer and no changes were observed in serial scan taken 6 hours after the first scan. These findings were strongly suggested the dissemination of the malignant tumors. A PET study with 18F-fluorodeoxyglucose was performed and showed extensive uptake in the intraabdominal and intrapelvic cavity. It was also useful for understanding the extension and distribution of the peritoneal metastatic lesions. The sites of the accumulation of 18F-fluorodeoxyglucose corresponded to the results found in postmortem. |
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| Practice | Clinical medicine |
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| Keywords | Retroperitoneal germ cell tumor, Yolk sac tumor, 67Ga-scan, 18F-FDG PET, Peritoneal dissemination. |
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