Gangliogliomas are central nervous system (CNS) tumors with a neuronal and glial component considered grade 1 according to the World Health Organization (WHO) classification. On the other hand, oligodendrogliomas are diffuse infiltrating gliomas (CNS WHO grade 2 or 3) characterized by both an isocitrate dehydrogenase mutation and 1p/19q co-deletion. There have been some cases with the coexistence of these two tumors. Here, we present the case of a low-growing left frontoparietal brain tumor with a definite diagnosis of ganglioglioma (CNS WHO grade 1) and oligodendroglioma (CNS WHO grade 2) with areas of anaplastic oligodendroglioma (CNS WHO grade 3) in a patient with long-standing epilepsy.

Purpose Show the MRI findings in a rare case of Acute Necrotizing Encephalopathy Post SARS-CoV-2 Infection in an Adult PatientIntroduction Acute necrotizing encephalopathy is a rare condition characterized by the presence of symmetrical multifocal lesions with predominantly thalamic involvement, as well as involvement of the brainstem, white matter of the brain, and cerebellum.Case Presentation We describe a case of a 26-year-old male, with a medical history of medulloblastoma that was disease-free after treatment, and who tested positive in a PCR for SARS-CoV-2 in cerebrospinal fluid. Upon evaluation at the emergency department one week later, the patient was found to be awake, oriented, and focused, and could maintain attention for periods. Mixed dysarthria persisted, characterized by being flaccid and hypokinetic. On magnetic resonance imaging, there were multiple hemorrhagic lesions with surrounding edema in the right thalamus with an extension to the posterior arm of the internal capsule, a smaller one, in the left thalamus, and another expanded to the ipsilateral peduncle.Conclusion Acute necrotizing encephalopathy presents a great clinical and diagnostic challenge, Close clinical and radiological follow-up is essential, and magnetic susceptibility sequences (T2 or SWI) should be included in the diagnosis protocol.

To show the MRI findings in a rare case of acute necrotizing encephalopathy following SARS-CoV-2 infection in an adult patient. Acute necrotizing encephalopathy is a rare condition characterized by the presence of symmetrical multifocal lesions with predominantly thalamic involvement, as well as the brainstem and cerebellum. We describe the case of a 26-year-old male with a medical history of medulloblastoma that was disease-free after treatment and who tested positive in a PCR for SARS-CoV-2 in cerebrospinal fluid. Upon evaluation at the emergency department one week later, the patient was found to be awake, oriented, and focused and could maintain attention for periods of time. Mixed dysarthria persisted, characterized by being flaccid and hypokinetic. On magnetic resonance imaging, there were multiple hemorrhagic lesions with surrounding edema in the right thalamus with an extension to the posterior arm of the internal capsule, a smaller one in the left thalamus, and another expanded to the ipsilateral peduncle. Acute necrotizing encephalopathy presents a great clinical and diagnostic challenge, close clinical and radiological follow-up is essential, and magnetic susceptibility sequences (T2 or SWI) should be included in the diagnosis protocol.

Dandy-Walker Malformation (DWM) and Pilocytic Astrocitoma are both rare disease entities that typically manifest early in life are associated with congenital etiological factors. DWM is a cerebellar malformation associated with a series of anatomical changes.The disease onset is usually at bith or during infancy. Late onset in adulthood is uncommon., Pilocytic astrocytoma is a tumor that arises from glial cells, primarily astrocytes, and is classified as grade I by the WHO. It is typically diagnosed in children and is frequently found in the posterior fossa. Concomitant occurrence of DWM and Pilocytic Astrocytoma there are very few reported cases.

Psychiatric symptoms caused by brain lesions are not uncommon nowadays, caused by several different pathologies such as Alzheimer's, dementia, vascular and oncological diseases, etc. and they are known as neuropsychiatric or neurobehavioral symptoms, overlapping as mental health disorders. The most common primary brain tumors are gliomas, and the most common neuropsychiatric symptoms caused by them are depression, anxiety disorder, schizophrenia-like psychosis, anorexia nervosa, or cognitive dysfunction. We present a case of a 46-year-old male with no psychiatric familial history who started with a schizophrenialike psychosis with hallucinations and, in consequence, killed his mother, symptoms which, after almost eight years, were known to be caused by a brain tumor.