Jan 21, 2025 · Presentation is commonly with headache as mass expansion of the tectum causes narrowing at the cerebral aqueduct and associated obstructive hydrocephalus 3,4. Additional symptoms, secondary to compression of the medial longitudinal fasciculus, may include upward gaze palsy and diplopia (Parinaud syndrome), although this is less common 3,4 ...

Tectal glioma is a slow-growing brain tumor in the tectum (or roof of the brain stem), which controls vital body functions such as breathing, heart rate, and blood pressure. Tectal glioma is a low-grade glioma .

What is a tectal glioma? A tectal glioma is a low-grade, slow-growing brain tumor in the tectum, the roof of the brain stem. The brain stem controls vital body functions such as breathing, heart rate, and blood pressure.

Mar 1, 2024 · The tectum is the dorsal portion of the midbrain (brainstem), located posteriorly to the mesencephalic aqueduct. It derives from the alar plate of the neural tube during embryonic development. Masses in the region of the tectum can obstruct the cerebral aqueduct resulting in obstructive hydrocephalus.

MRI of these tumors reveals tectal distortion or thickening caused by a localized mass, leading to aqueductal compression and hydrocephalus; characteristic T1 hypointensity and T2 hyperintensity.

Tectal glioma (TG) is a rare lower grade glioma (LrGG) that occurs in the tectum, mainly affecting children. TG shares pathological similarities with pilocytic astrocytoma (PA), but recent genetic analyses have revealed distinct features, such as alterations in KRAS and BRAF.

Introduction: Tectal plate gliomas are generally benign neoplastic lesions arising in the brainstem which can, with local extension, obstruct the aqueduct of Sylvius and lead to hydrocephalus.

Sagittal T1 MRI without contrast of the brain (above left) shows an isointense lesion in the tectum and in the pineal gland which on sagittal FLAIR (above right) appears to shows low signal intensity representing perhaps calcification in its pineal component.

Jan 1, 2017 · We conclude that mass lesions originating in the upper midbrain are a subset of intrinsic brainstem tumors with a relatively benign course, usually presenting with hydrocephalus after infancy.

Jan 21, 2025 · Presentation is commonly with headache as mass expansion of the tectum causes narrowing at the cerebral aqueduct and associated obstructive hydrocephalus 3,4. Additional symptoms, secondary to compression of the medial longitudinal fasciculus, may include upward gaze palsy and diplopia (Parinaud syndrome), although this is less common 3,4.