My mom 52 yrs of age with no underlying condition has been diagnosed with meningioma in left parietal lobe along the falx of the size 4.6 x 4.5 x 4 cm?

May need tx: Does your mom have symptom? Symptomatic meningioma >4cm generally requires tx. Asymptomatic meningioma > 4cm usually will be treated, or observed occationally according to the NCCN. Tx will involve surgery if accessible, followed by radiation depending on the pathology or may be radiation alone. You should see an oncologist to have a thorough review of the case and then decide.