2024年11月19日 · Dysembryoplastic neuroepithelial tumors (DNET) are benign (WHO Grade 1) slow growing glioneuronal tumors arising from either cortical or deep grey matter. They are considered part of the heterogeneous group of tumors known as long-term epilepsy-associated tumors (LEATs) .

MRI is the mainstay of diagnostic modality for DNET. DNETs typically have a bubble-like, or popcorn-like multinodular shape with low signal intensity in T1-weighted images and high signal intensity in T2-weighted and fluid-attenuated inversion recovery (FLAIR) images ( Fig. 1 ).

2019年11月4日 · mri分型的临床意义. dnet作为癫痫相关性肿瘤，常伴发局灶性皮质发育不良，因而发展为药物难治性癫痫。外科手术是治愈肿瘤以及控制癫痫的主要手段，但前提是必须明确dnet的致痫范围。

2016年4月16日 · 胚胎发育不良性神经上皮瘤 （Dysembryoplastic Neuroepithelial tumor，DNET）是一种不常见的良性皮质内病变，WHO 将其分类为「神经元和混合性神经胶质肿瘤」，该病常常伴有皮质发育不良。

MRI through the temporal lobes of a patient with seizures demonstrates a high T2, low T1 region within the anterior mesial temporal lobe on the right. The central high T2 region does not attenuate on FLAIR. In cystic cortical tumors involving the temporal lobe, the general differential diagnosis includes: The patient went on to have a resection.

We report the neuroimaging findings of a 26-year-old female patient with a biopsy-proven dysembryoplastic neuroepithelial tumor (DNET). DNETs are an uncommon, usually benign, glial-neural cortical neoplasm of children and young adults who …

DNET is a benign mixed neuronal-glial tumor causing drug-resistant epilepsy primarily in children and young adults. The typical radiological pattern is a magnetic resonance imaging (MRI) T1-hypointense, T2-, and fluid-attenuated inversion-recovery hyperintense multicystic lesion involving the cerebral cortex with no edema.

2021年12月9日 · 胚胎发育不良性神经上皮肿瘤（dysembryoplastic neuroepithelial tumor,DNET）是一种少见的良性脑肿瘤，2016 版 WHO 中枢神经系统肿瘤分类将其归入神经元-混合神经元肿瘤，WHO I 级，生长缓慢，临床上以复杂的、难治性癫痫为主要特点，手术治疗是其有效的治疗手段，预后 ...

"倒三角征"和t2flair"环征"、微囊性信号是dnet特征性mri表现。结论 dnet临床特点和mri影像表现具有一定的特征性,熟悉dnet的临床特征及mri影像学表现有助于提高对该病的诊断水平。

Dysembryoplastic neuroepithelial tumor (DNET) A benign, focal, intra cortical mass superimposed on background of cortical dysplasia. Imaging wise diagnostic clue is a well-demarcated, wedge-shaped "bubbly" intra cortical mass in young patient with longstanding partial seizures.