An extra-axial mass in the left frontal region with perilesional edema compatible with a meningioma.

Meningioma is the most common extra-axial tumors, representing 38% in women and 20% in men; however, other masses can mimic their characteristics, including primary neoplasms, infections, metastases, findings that increase the probability that an If the lesion is meningioma, mention is made of skull hyperostosis, dural tail sign, and homogeneous enhancement to the administration of contrast medium. Among the central differential is the hemangiopericytoma, considered malignant, a large, lobular mass that often causes hydrocephalus, edema, and mass effect; in tomography without contrast, a hyperdense lesion is shown that enhances when contrast, hyperostosis is not frequent, these extra-axial tumors affect men more than women.