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Case #34

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患者信息: 19 岁, 男性
检查指征: Seizure

Case #34

影像所见

CT

  • Hypoattenuating mass in the medial right temporal lobe, which bulges inferiorly through the tentorial notch
  • No corresponding calcification

MRI

  • Lobular T1 hypointense, T2 hyperintense mass centered in the medial right temporal lobe (with involvement of the hippocampus and parahippocampal gyrus) measuring 4.5 x 4.3 x 3 cm
  • The mass bulges inferiorly through the tentorial notch and contacts the superior margin of the cerebellum
  • Incomplete internal signal suppression on FLAIR
  • No corresponding restricted diffusion or enhancement
  • No surrounding parenchymal edema
  • Associated local mass effect without evidence for hydrocephalus
  • 1.4 cm pineal cyst

诊断

IDH-mutant astrocytoma

鉴别诊断

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要点

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参考文献

  • Larsen J, Wharton SB, McKevitt F, Romanowski C, Bridgewater, C, Zaki H, Hoggard N. ‘Low grade glioma’: an update for radiologists. Br J Radiol 2017; 90: 20160600.

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