Intraosseous arachnoid cyst of the skull. Clinical case

The objective is to describe the clinical case of arachnoid cyst of occipital bone. Case report . Patient with arachnoid cyst of occipital bone was treated in the clinic of the A.I. Evdokimov Moscow State University of Medicine and Dentistry. The patient had severe pain in the occipital region for several years, conservative treatment was ineffective. Neuroimaging revealed an unusual intraosseous defect in the occipital bone. A partial resection of the occipital bone was performed and cranioplasty was made. During operation it was discovered that the patient had an intraosseous arachnoid cyst, the diagnosis was further confirmed by histological examination. After surgery, regression of pain in the occipital region was noted. Conclusion . The intraosseous arachnoid cyst of the skull is an extremely rare and can cause a severe local headache. Surgery is an effective treatment of this pathology.