Meningioma Differential Diagnoses
- Author: Georges Haddad, MD; Chief Editor: Tarakad S Ramachandran, MBBS, FRCP(C), FACP more...
Differential Diagnoses
- Brainstem Gliomas
- Cavernous Sinus Syndromes
- Complex Partial Seizures
- Craniopharyngioma
- Frontal Lobe Syndromes
- Glioblastoma Multiforme
- Low-Grade Astrocytoma
- Neurofibromatosis, Type 1
- Neurofibromatosis, Type 2
- Oligodendroglioma
- Persistent Idiopathic Facial Pain
- Pituitary Tumors
- Primary CNS Lymphoma
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| Location | Symptoms |
| Parasagittal | Monoparesis of the contralateral leg |
| Subfrontal | Change in mentation, apathy or disinhibited behavior, urinary incontinence |
| Olfactory groove | Anosmia with possible ipsilateral optic atrophy and contralateral papilledema (this triad termed Kennedy-Foster syndrome) |
| Cavernous sinus | Multiple cranial nerve deficits (II, III, IV, V, VI), leading to decreased vision and diplopia with associated facial numbness |
| Occipital lobe | Contralateral hemianopsia |
| Cerebellopontine angle | Decreased hearing with possible facial weakness and facial numbness |
| Spinal cord | Localized spinal pain, Brown-Sequard (hemispinal cord) syndrome |
| Optic nerve | Exophthalmos, monocular loss of vision or blindness, ipsilateral dilated pupil that does not react to direct light stimulation but might contract on consensual light stimulation; often, monocular optic nerve swelling with optociliary shunt vessels |
| Sphenoid wing | Seizures; multiple cranial nerve palsies if the superior orbital fissure involved |
| Tentorial | May protrude within supratentorial and infratentorial compartments, producing symptoms by compressing specific structures within these 2 compartments[4] |
| Foramen magnum | Paraparesis, sphincteric troubles, tongue atrophy associated with fasciculation |
| WHO Grade | Histological Subtype | Histological Features |
| I | Meningothelial, fibroblastic, transitional, angiomatous, microcystic, secretory, lymphoplasmacytic metaplastic, psammomatous | Does not fulfill criteria for grade II or III |
| II (Atypical) | Chordoid, clear cell | 4 or more mitotic cells per 10 hpf and/or 3 or more of the following: increased cellularity, small cells, necrosis, prominent nucleoli, sheeting, and/or brain invasion in an otherwise Grade I tumor |
| III (Anaplastic) | Papillary, rhabdoid[15] | 20 or more mitoses per 10 hpf and/or obviously malignant cytological characteristics such that tumor cell resembles carcinoma, sarcoma, or melanoma |

