REOCCURANCE OF A CYSTIC MASS LESION IN AN OLD AGE PATIENT OF INTRAOSSEOUS MENINGIOMA AFTER GAMMA KNIFE RADIOSURGERY. A RARE CASE REPORT

Background: Intraosseous meningiomas are the rare type of skull tumors that can occur at any of the skull bone. They can grow as silent and asymptomatic but can cause serious neurological symptoms including dementia, ataxia, disoriented, confused, seizures and harm to the adjacent facial structures. GKRS is thought to be the non-invasive therapeutic procedure for meningiomas. Presentation of case: A 40 years old man with on and off headaches for a very long time when became severe along with nausea and vomiting was admitted to the hospital. First CT scan showed a benign cyst in left frontal region of brain. With the passage of time patient was diagnosed with intraosseous meningiomas of fronto-parietal region. GKRS was performed for intraosseous meningiomas after which the follow up scans showed residual meningiomas and re-occurrence of cystic mass lesion on right frontal region of brain. Discussion: Primary Intraosseous meningiomas of skull are the rare entities of extra-Dural meningiomas. EBRT is thought to be the non-invasive and safe therapeutic method to resolve any type of meningiomas but this case study represents a rare cystic mass lesion along with intraosseous meningiomas. Also in literature the incidence of cystic meningiomas is rare and our case has reported both the characteristics that are cystic and Intraosseous which makes this case study exceptional Conclusion: This study has represented an exceptional case report by which a point towards the gamma knife radiation exposure side effects and outcomes has been raised. This case study will be helpful for further researches.