Grade I of the WHO classification of brain tumours and, generally, has a good prognosis.
* DNET is a benign tumor arising from the cortical or deep gray matter. * Almost always manifest in patients with medically refractory partial seizures. * Majority of patients are younger than 20 years. * Males are more commonly affected. * The temporal lobe is the most common site (62%) followed by the frontal lobe (31%). * Remarkably stable in terms of biologic behavior. o Despite only partial resection, complete cessation of all seizure activity is a common. o Recurrence is also very rare.
Imaging Findings for Dysembryoplastic neuroepithelial tumor
* CT: The tumor manifests as a hypoattenuating mass. * Calcification may be seen. * Remodeling of the adjacent inner table of the skull may also be seen.
* MRI: The tumors most commonly manifest as cortical masses that are hypointense on T1-weighted images and hyperintense on T2-weighted images without surrounding vasogenic edema. * Some lesions may appear as an enlarged gyrus, producing a soap bubble appearance at the cortical margin. * Approximately one-third of the tumors enhance following intravenous administration of contrast material.
1 件のコメント:
1）上岡先生
症例1 サルコイドーシス
症例2 SFT
2）武藤先生
症例 脂肪塞栓症
3）森先生
症例 食道破裂の2症例
4）浅井先生
症例 肺癌の髄膜播種
5）渡辺
症例1
29歳 女性
就寝中に舌を噛んだ。
Dysembryoplastic Neuroepithelial Tumor (DNT)
Grade I of the WHO classification of brain tumours and, generally, has a good prognosis.
* DNET is a benign tumor arising from the cortical or deep gray matter.
* Almost always manifest in patients with medically refractory partial seizures.
* Majority of patients are younger than 20 years.
* Males are more commonly affected.
* The temporal lobe is the most common site (62%) followed by the frontal lobe (31%).
* Remarkably stable in terms of biologic behavior.
o Despite only partial resection, complete cessation of all seizure activity is a common.
o Recurrence is also very rare.
Imaging Findings for Dysembryoplastic neuroepithelial tumor
* CT: The tumor manifests as a hypoattenuating mass.
* Calcification may be seen.
* Remodeling of the adjacent inner table of the skull may also be seen.
* MRI: The tumors most commonly manifest as cortical masses that are hypointense on T1-weighted images and hyperintense on T2-weighted images without surrounding vasogenic edema.
* Some lesions may appear as an enlarged gyrus, producing a soap bubble appearance at the cortical margin.
* Approximately one-third of the tumors enhance following intravenous administration of contrast material.
症例2
74歳 男性
数カ月前に入れ歯の処置をした。
2週間前に四肢の浮腫を生じた。
39度の発熱があった。翌日から呼吸困難を生じた。
感染性心内膜炎、起因菌は黄色ブドウ球菌であった。
経過中に多発する脳出血を認めた。
コメントを投稿