Fig. 2: The radiological characteristics of patients with brainstem tumors.

The 3D-T1 weighted MRI images show the imaging in axial, coronal, and sagittal positions of the primary tumors located in the medulla oblongata (A), pons (B), and midbrain (C). The red arrow highlights the tumor tissue, characterized by an uneven low signal. The yellow contoured regions, arranged from top to bottom, correspond to the medulla oblongata, pons, and midbrain regions, respectively.