How a resected meningioma tumor looks like скачать в хорошем качестве

How a resected meningioma tumor looks like

meningioma is a type of tumor that arises from the meninges—the protective membranes that surround the brain and spinal cord. Although it's not a brain tumor in the strictest sense, it can press against brain tissue, nerves, and blood vessels, causing significant symptoms depending on its size and location. 🧠 Key Features of Meningioma Origin: Arises from arachnoid cap cells in the meninges Nature: Most are benign and slow-growing, but some can be atypical or malignant Prevalence: Most common primary CNS tumor; more frequent in women and older adults Location: Often found on the outer surface of the brain, skull base, or spinal cord 🔍 Symptoms Symptoms depend on the tumor’s location and size. Common signs include: Headaches (often worse in the morning) Vision changes (blurring or double vision) Hearing loss or ringing in the ears Seizures Memory loss Weakness in limbs Loss of smell Speech difficulties Some meningiomas are discovered incidentally during imaging for unrelated issues, as they may grow silently over years. 🧪 Classification Meningiomas are graded by the World Health Organization (WHO): Grade Description Behavior Grade I Typical meningioma Benign, slow-growing Grade II Atypical meningioma Faster growth, higher recurrence risk Grade III Anaplastic meningioma Malignant, aggressive, may invade brain tissue 🩺 Diagnosis & Treatment Imaging: MRI is the gold standard; CT may also be used Biopsy: Confirms tumor type and grade Treatment Options: Observation: For small, asymptomatic tumors Surgery: Main treatment for accessible tumors Radiation therapy: Used for residual or inoperable tumors Advanced therapies: May include stereotactic radiosurgery or targeted treatments ⚠️ Risk Factors Prior radiation exposure (especially in childhood) Female hormones (possible link with hormone therapy or birth control) Genetic conditions like Neurofibromatosis Type 2 Obesity (linked to higher risk in some studies) #Meningioma