Rock bone meningioma

Anatomically, the rock bone slope area refers to the area surrounded by the sphenoid bone, temporal bone and occipital bone. These bones constitute the middle and posterior cranial fossa of the skull base. Meningiomas that occur in this area are divided into cavernous sinus meningiomas, middle cranial meningiomas, pontine cerebellar meningiomas, petrous apical meningiomas, slope meningiomas, and occipital foramen meningiomas. Wait. The tumors located on the 2/3 slope of the posterior cranial fossa and the rock bone epiphysis within the inner auditory canal, because of their deep location, often accumulate multiple cerebral nerves and vascular structures, which is difficult to operate. In recent years, more and more scholars have paid more attention. . Therefore, some scholars divide tumors in this area into three types according to the location, growth direction, clinical manifestations, and surgical approach of the tumor: the slope type grows from the arachnoid cell clusters that are clustered in the rock-bone slope dura mater. Develop to the opposite side to the center line. The tumor is mainly located in the upper and middle slopes, which compresses the midbrain and pontine backward. The meningeal pituitary stem, the meningeal branch of the middle meningeal artery, and the vertebral artery slope branch participate in the blood supply. Rock oblique tumors grow from the cracks of the rock bone to the side and spread to one side. The tumors are mainly located in the middle slope and the cerebellar pontine angle. The tumor is mainly supplied by the meningeal pituitary trunk, vertebral occipital branch and slope branch, and occipital artery rock bone branch. The sphenoid slope tumor grows from the sphenoid slope, and extends laterally to the side of the sphenoid saddle, the middle cranial fossa, and the tip of the rock bone, and develops through the cerebellar fissure to the back of the saddle. Cerebral angiography showed that the meningeal pituitary stem, the meningeal branch of the middle meningeal artery, and the ascending branch of the ascending pharyngeal artery participated in the blood supply.