分析：从MR上看，肿瘤起源于脑干背侧，髓母细胞瘤可能性较小。故病理性质上多考虑胶质瘤可能性大（弥漫中线胶质瘤，室管膜瘤等）。考虑到该占位已对脑干产生明显压迫，同时导致脑积水，故手术切除为优先选择；替代方案为脑室腹腔分流同时行肿瘤活检。

with either a BRAF fusion or rearrangement or BRAF V600 mutation based on the results of the FIREFLY-1 study. Ipsen's deal includes $71 million in cash and another $40 million in equity and comes ...

Vaccines have had a major impact on the control of infectious disease, most recently by helping to combat the COVID-19 ...

The LKB1 tumour suppressor is a serine/threonine kinase that functions as master regulator of cell growth, metabolism, survival and polarity. LKB1 is frequently mutated in human cancers and ...