Case Reports in Gastroenterology (Dec 2017)

Hepatic Pseudolymphoma with Fluorodeoxyglucose Uptake on Positron Emission Tomography

  • Kazuhiro Suzumura,
  • Etsuro Hatano,
  • Toshihiro Okada,
  • Yasukane Asano,
  • Naoki Uyama,
  • Seikan Hai,
  • Ami Kurimoto,
  • Kentaro Nonaka,
  • Tohru Tsujimura,
  • Jiro Fujimoto

DOI
https://doi.org/10.1159/000481936
Journal volume & issue
Vol. 10, no. 3
pp. 826 – 835

Abstract

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A 69-year-old woman with chronic hepatitis B was admitted to our hospital with a hepatic tumor. The levels of 2 tumor markers, carcinoembryonic antigen and carbohydrate antigen 19-9, were slightly elevated; however, the α-fetoprotein and protein levels induced by vitamin K antagonist II were within the normal limits. Abdominal ultrasonography showed a well-defined peripheral hypoechoic mass that was isoechoic and homogeneous on the inside. Computed tomography showed a poorly enhanced tumor of 13 mm in diameter in the 5th segment of the liver. Fluorodeoxyglucose positron emission tomography showed a slight uptake (maximum standard uptake value 3.4) by the hepatic tumor. These findings suggested cholangiocellular carcinoma, and we performed anterior segmentectomy of the liver. A histopathological examination showed a hepatic pseudolymphoma. The patient’s postoperative course was uneventful, and she remains alive without recurrence 5 months after undergoing surgery. In most cases, hepatic pseudolymphoma is preoperatively diagnosed as a malignant tumor and a definite diagnosis is made after resection. It is therefore necessary to consider hepatic pseudolymphoma as a differential diagnosis in patients with hepatic tumors.

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