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Hinyokika Kiyo. 2013 May;59(5):293-6.

[A case of malignant lymphoma in the pelvis suspected to be a neurogenic tumor].

[Article in Japanese]

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  • 1The Department of Urology, Osaka University Graduate School of Medicine.


A 70-year-old man visited a urological clinic with a chief complaint of pollakiuria, which was refractory to various medications. Pelvic magnetic resonance imaging (MRI) revealed a mass 6 cm in diameter immediately next to the left side of the bladder. The patient was referred to our hospital for further examination. Since he had a past history of neurofibroma of cauda equina, we suspected neurofibromatosis type 1. (18)Fluorodeoxyglucose (FDG)-positron emission tomography (PET) demonstrated a high accumulation of FDG in the pelvic mass. Under a diagnosis of neurogenic tumor, surgery was performed. As an examination of frozen section during the surgery led us to suspect a sarcoma, the tumor was excised radically. The pathological examination demonstrated diffuse large B cell lymphoma.

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