Clinical Presentation & Radiographic Appearance (by location)

Meningioma may cause varying symptoms, mainly dictated by (1) the tumor location and (2) the extent of the “mass effect” or pressure exerted on the surrounding anatomic structures by the tumor itself and/or the “edema” (i.e. brain swelling) caused by the tumor when present.  Small tumors, in the absence of any severe surrounding edema, usually do not cause any significant symptoms because of the negligible “mass effect”.  Sometimes, even large tumors may not cause any significant symptoms mainly because the tumor grew slowly and the surrounding brain accommodated well the gradually progressing mass effect.

Symptoms (“clinical presentation”) caused by meningiomas are direct reflection on the particular function of the brain/cranial nerve(s) affected by the tumor’s mass effect:

Any forebrain areas (i.e. the frontal, temporal, parietal and occipital lobes) – Seizures   and headache when large

Frontal lobe – Personality changes

Left temporal lobe – Memory and/or speech problems

Frontoparietal lobe – Focal seziures, focal weakness/numbness on the opposite side

Optic nerve (CN II) – Visual deterioration

Occipital lobe – Visual field deficit

Cerebellum (the “hind brain”) – Balance and coordination problems, walking difficulty

Other cranial nerves – Loss of smell (CN I), facial pain/numbness (CN V), double vision (CN III, IV, VI), hearing loss (CN VIII), swallowing difficulty and/or hoarseness (CN X)

The following images are selected, and not comprehensive, examples of meningiomas.  Common symptoms caused by these meningiomas according to their locations are presented.

Clinical Presentation & Radiographic Appearance

Frontotemporal Convexity Meningioma

Parasagittal Meningioma

Middle Sphenoid Wing Meningioma

Olfactory Groove Meningioma

Clinoidal Meningioma

Medial Tentorial Meningioma

Petroclival Meningioma

Ventral Petrous Meningioma

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