Detailed Treatment Process
An 8-month-old boy was diagnosed with an intracranial malignant tumor. No written imaging report was available, so only a general recall-based description of the images can be provided: Imaging showed that the lesion occupied most of the brain parenchymal space and had a clear tendency toward supratentorial origin. The massive mass effect directly caused extreme dilation of the ventricular system, which meant that the cerebrospinal fluid circulation pathways (such as the interventricular foramen or the cerebral aqueduct) might have been obstructed or compressed and deformed by the lesion. Because the lesion occupied such a large space, it was closely related to the structures of the cerebral hemispheres. Imaging signal characteristics (clues to the nature of the lesion): On these sequences, the lesion showed mixed signals. Some areas appeared as low signal (possibly corresponding to cystic changes, necrosis, or cerebrospinal fluid-like fluid), while other areas might have had solid components. This mixed cystic-solid appearance is relatively common in intracranial tumors in infants and young children and is sometimes possibly associated with choroid plexus papilloma, ependymoma, or other embryonal tumors. The child was hospitalized and underwent surgery. He died three months later.