Spontaneous regression of peritumoral brain edema in an asymptomatic meningioma: A radiological case report

Peritumoral brain edema (PTBE) is a common radiologic finding in meningiomas and often influences clinical decision-making. However, spontaneous regression of PTBE without intervention is rare. We report a 74-year-old man with an incidentally detected right middle cranial fossa meningioma accompanied by marked PTBE following minor head trauma. The patient remained asymptomatic and was managed conservatively without steroids or surgery. Over a 3-year follow-up period, the tumor size remained stable, whereas the extensive PTBE regressed almost completely on serial MRI. This case suggests that even substantial PTBE may resolve spontaneously and highlights the importance of individualized management strategies in asymptomatic meningioma patients.