A Case of Splenic Inflammatory Pseudotumor with High FDG Accumulation on FDG-PET

Hijiri Takeuchi, Hirotaka Kashiwagi, Hirotaka Fujita, Akihiro Kondo and Setsuo Okada

Department of Surgery, Sakaide City Hospital

No case has, to our knowledge, been reported in the Japanese literature of FDG-PET findings for splenic inflammatory pseudotumor, which we report here with a review of the literature. A 38-year old woman admitted for a high fever and left omalgia was found in blood tests to have elevated CRP and soluble IL-2 receptor. Abdominal contrast-enhanced computed tomography showed a low-density mass with a clear margin in the spleen. FDG-PET showed high FDG accumulation in the spleen, with a standardized early-phase uptake of 4.0 and late-phase 4.1, necessitating splenectomy for a splenic tumor. The surgical specimen showed a mixed red-brown and whitish solid tumor 78 mm×76 mm with a clear margin. Histopathologically, it was diagnosed as splenic inflammatory pseudotumor.

Key words
inflammatory pseudotumor, splenic tumor, inflammatory myofibroblastic tumor

Reprint requests
Hijiri Takeuchi Department of Surgery, Sakaide City Hospital
1-6-43 Bunkyo-cho, Sakaide, 762-0031 JAPAN

Accepted
May 30, 2007

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