adult pineal parenchymal tumor (MONDO_0003248) is a pineal parenchymal cell neoplasm (pineocytoma or pineoblastoma) occurring in adults. Also known as: adult pineal gland neoplasm, adult pineal gland tumor, adult pineal gland tumour, adult pineal parenchymal cell neoplasm, adult pineal parenchymal cell tumor, adult pineal parenchymal cell tumour, adult pineal parenchymal neoplasm, parenchymal neoplasm of adult pineal gland.