You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A 45-yr-old female complains of progressive lower limb weakness, spasticity, urinary hesitancy. MRI shows intradural enhancing mass lesion. Most likely diagnosis is - and explain in detail?
Among the given options, the only meningioma shows enhancement on contrast scans. "The radiologic image of a dural-based, extra-axial mass with dense, uniform contrast enhancement is essentially diagnostic, although a dural metastasis must also be considered. A meningioma may have a 'dural tail' a streak of dural enhancement flanking the main tumor mass, however, the finding may also be present with other dural tumors." Ref : Harrison, 17/e p2605