Detection of a metastatic lesion and tiny yolk sac tumors in two teenage patients by FDG-PET: report of two cases

作者：Takahashi Masataka; Kanamori Yutaka^*; Takahashi Miwako; Momose Toshimitsu; Iwanaka Tadashi

来源：Surgery Today, 2014, 44(10): 1962-1965.

DOI：10.1007/s00595-013-0656-8

• FDG-PET
• Yolk sac tumors
• Alpha-fetoprotein

We herein report the efficacy of FDG-PET for detecting yolk sac tumors in two teenage patients. One patient had a rare bone metastasis and the other had tiny recurrent lesions at the mediastinum. Both lesions were difficult to detect by conventional diagnostic modalities. In contrast, FDG-PET was very effective for detecting these lesions. Furthermore, the SUVmax of the lesion reflected the tumor activity, which was also suggested by the fluctuating values of serum alpha-fetoprotein (AFP), an established marker of yolk sac tumors. FDG-PET may be a useful procedure to detect tiny and metastatic, pediatric yolk sac tumors.

• 出版日期2014-10