A suboccipital craniotomy is a surgical approach that allows a surgeon to access a specific area within the base of the skull. A person may have this surgery if they have a tumor or another issue ...

Retrosigmoid craniotomy is a surgical approach that can treat brain tumors, lesions, and other health conditions that affect the posterior fossa, an area at the back of the skull. Approaches like this ...

Chiari malformation, an anomaly of the posterior cranial fossa, also known as Arnold–Chiari malformation, was described in autopsies by Hans Chiari, an Austrian pathologist, in 1891. He defined four ...

Pembrolizumab in Patients With Advanced Triple-Negative Breast Cancer: Phase Ib KEYNOTE-012 Study Four independent nonoverlapping retrospective cohorts of posterior fossa ependymomas (n = 820) were ...