Case Reports in Oncology (Jan 2018)

Tiny Obturator Node Metastasis from Prostate Cancer Not Shown by FDG-PET/CT, CT, or MRI Detected by 11C-Choline PET/CT

  • Kazuhiro Kitajima,
  • Shingo Yamamoto,
  • Soichi Odawara,
  • Yusuke Kawanaka,
  • Yukako Nakanishi,
  • Takahiko Hashimoto,
  • Yusuke Yamada,
  • Toru Suzuki,
  • Akihiro Kanematsu,
  • Michio Nojima,
  • Neinei Kimura,
  • Masataka Zouzumi,
  • Seiichi Hirota,
  • Koichiro Yamakado

DOI
https://doi.org/10.1159/000486365
Journal volume & issue
Vol. 11, no. 1
pp. 33 – 37

Abstract

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We report a 65-year-old male with histopathologically proven prostate cancer and multiple pelvic node metastases using a robotic-assisted radical prostatectomy procedure plus extended pelvic lymph node dissection. Positron emission tomography (PET) scan findings demonstrated a moderate accumulation of 11C-choline in a metastatic left obturator node sized 8 × 8 mm, though only a faint uptake of fluorodeoxyglucose (FDG) was noted. 11C-choline PET/computed tomography (CT) may be useful for the diagnosis of a tiny metastatic lymph node not demonstrated by CT, magnetic resonance imaging, or FDG-PET/CT and to determine the need for an extended pelvic lymph node dissection.

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