"The clinical presentation, pathology and radiographic appearances are those of retinoblastomas and pineoblastomas. The pineoblastoma is usually located in the pineal gland but can on occasion be seen in the suprasellar region."
"It affects only a minority of patients with retinoblastoma (1.5-5%) and is almost always seen in children with bilateral retinoblastoma; in this subset of patients, the rate may be as high as 25%."