Pineal Region Metastasis Appearing as Hypointensity on T_2-Weighted Magnetic Resonance Imaging
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概要
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A 48-year-old female presented with headache and limitation of upward gaze. She had a history of total gastrectomy for gastric adenocarcinoma 2 years previously. Computed tomography with contrast medium and T_1-weighted magnetic resonance(MR)imaging with gadolinium showed ring-like enhancement of a solitary mass in the pineal region with obstructive hydrocephalus. T_2-weighted MR imaging showed the tumor as hypointense. This MR imaging finding complicated the preoperative diagnosis, but malignancy was suspected from the medical history. The tumor was subtotally resected via the occipital transtentorial approach with a rigid endoscope. Histological examination of the surgical specimen revealed adenocarcinoma cells with extensive coagulation necrosis, which might have contributed to the hypointensity on T_2-weighted MR imaging. Correct diagnosis of metastatic adenocarcinoma based only on MR imaging may be difficult in such cases, but metastatic adenocarcinoma of the pineal region must be considered in the differential diagnosis of pineal tumors.
- 日本脳神経外科学会の論文
- 2000-05-15
著者
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Watanabe Kenichi
Department Of Clinical Pharmacology Faculty Of Pharmaceutical Sciences Niigata University Of Pharmac
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Kanai Hideki
Department Of Neurosurgery Kakegawa City General Hospital Kakegawa Shizuoka.
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Aihara Noritaka
Departments Of Neurosurgery And Radiology Nagoya City University Medical School Nagoya
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Aihara Noritaka
Department Of Neurosurgery And Restorative Neuroscience Nagoya City University Graduate School Of Me
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Yamada Kazuo
Departments Of Neurosurgery And Radiology Nagoya City University Medical School Nagoya
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Yamada Kazuo
Department Of Architecture Faculty Of Engineering Aichi Institute Of Technoligy
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Watanabe Kenichi
Departments Of Neurosurgery And Radiology Nagoya City University Medical School Nagoya
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Yamada Kazuo
Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University
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