RESUMO
Vestibular schwannomas are common, and gamma knife radiosurgery is a treatment option of symptomatic tumors. Hydrocephalus may be a complication of gamma knife treatment of vestibular schwannoma, though the cause-and-effect relationship can be debated because tumors can cause hydrocephalus without treatment. We present an MR imaging study of an unusual case of communicating hydrocephalus after gamma knife radiosurgery of a vestibular schwannoma in which the timeline of events strongly suggests that gamma knife played a contributory role in the development of hydrocephalus. We discuss risk factors for the development of hydrocephalus after radiation therapy and the role of MR CSF cine-flow study in the evaluation of treatment options for hydrocephalus in this setting.
Assuntos
Hidrocefalia/etiologia , Hidrocefalia/patologia , Imageamento por Ressonância Magnética/métodos , Neuroma Acústico/patologia , Neuroma Acústico/cirurgia , Radiocirurgia/efeitos adversos , Feminino , Humanos , Neuroma Acústico/complicações , Adulto JovemRESUMO
The author reviews the development of contact lenses in the period 1930 to 1950. Based on personal knowledge and involvement the author describes the ideas, the problems, and the people who combined to advance this aspect of optometry.
