A well-defined right parietotemporal meningioma usually means a benign tumor. Meningiomas may be found within the meningeal tissue. If a right parietal-temporal meningioma is found to have clear borders, it means that the meningioma tissue is relatively well differentiated, and most of the time it is a benign lesion. If the right parietal-temporal meningioma has a clear boundary, it may have a relatively slow growth rate, and sometimes does not have obvious discomfort symptoms, then it can be regularly reviewed and actively observed, if the tumor tissue is found to continue to grow, it is best to carry out craniotomy to remove the diseased tissue as soon as possible. If the right parietal-temporal meningioma has a clear boundary, the possibility of malignant transformation cannot be ruled out completely, so it is necessary to consult a doctor as soon as possible for examination and treatment, and the condition must not be delayed.