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Acute Mastoiditis and Cerebellar Capillary Hemangioblastoma Demonstrated by FDG PET/CT Images

FDG PET/CT影像顯示的急性乳突炎及小腦血管母細胞瘤

摘要


A 64-year-old man with known diabetes mellitus and uremia was under regular hemodialysis. He complained recent dizziness, vomiting, and gait disturbance. Right side hearing impairment, right side earache, and leukocytosis were noted. He went for a head magnetic resonance imaging scan which revealed a tumor in the right paramedian cerebellum and the right mastoiditis. The cerebellum tumor was suspected of metastasis of unknown origin. Then he was referred for a whole-body ^(18)F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography. The result showed increased FDG uptake in the right mastoid and faint tracer uptake in the right cerebellum region. The mastoiditis subsided after antibiotic treatment, and pain was relieved, white blood cell and differential count returned to normal range soon after. He received suboccipital craniotomy and removal of tumor. Histopathology revealed cerebellar capillary hemangioblastoma. The tumor is usually well-circumscribed with a highly vascular mural nodule almost always abutting pial layer and a peripheral cyst which has similar contents as blood plasma.

並列摘要


一位64歲男性,有糖尿病與尿毒症的病史,規律地接受血液透析。他的主訴是最近有頭暈、嘔吐與步態不穩的症狀。另外也發現右側聽力受損、右側耳痛與白血球上升。他接受核磁共振影像檢查,影像顯示有個腫瘤位於右中線旁小腦與右側乳突炎。小腦腫瘤被認為是未知來源的轉移。接著他接受全身氟-18去氧葡萄糖正子攝影斷層掃描/電腦斷層掃描。結果顯示右乳突增加的氟-18去氧葡萄糖攝取與右小腦區域未攝取。乳突炎經過抗生素治療好轉,疼痛緩解,並且白血球與白血球分類計數回到正常值。他接受枕下開顱術並切除腫瘤。病理組織報告顯示小腦血管母細胞瘤。通常腫瘤的邊界清晰,血管壁結節度高,幾乎總是鄰接著皮層和與血漿含量相似的周圍囊腫。

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