Pineal ganglioneuroblastoma in an adult.

A 57-year-old male with pineal ganglioneuroblastoma was reported. The tumor was composed of a predominant ganglioneuromatous component and a small neuroblastic component. Primary ganglioneuroblastoma of the pineal region is extremely rare. To our knowledge, only three cases have been documented. This case may have a good prognosis because there is a predominant ganglioneuromatous component defined by both neurofilament triplet proteins and synaptophysin. The clinical significance of the neuronal differentiation in the present case and pathological considerations are discussed.