Pinealoma
Synonyms
Mixed Pineocytoma Pineoblastoma
Mixed Pineocytoma-Pineoblastoma
Mixed Pineocytoma-Pineoblastomas
Neoplasm, Pineal
Neoplasms, Pineal
Pineal Gland Tumor
Pineal Gland Tumors
Pineal Neoplasm
Pineal Neoplasms
Pineal Parenchymal Tumor
Pineal Parenchymal Tumors
Pineal Tumor
Pineal Tumors
Pinealocytoma
Pinealocytomas
Pinealomas
Pineoblastoma
Pineoblastomas
Pineocytoma
Pineocytoma-Pineoblastoma, Mixed
Pineocytoma-Pineoblastomas, Mixed
Pineocytomas
Tumor, Pineal
Tumor, Pineal Gland
Tumor, Pineal Parenchymal
Tumors, Pineal
Tumors, Pineal Gland
Tumors, Pineal Parenchymal
Neoplasms which originate from pineal parenchymal cells that tend to enlarge the gland and be locally invasive. The two major forms are pineocytoma and the more malignant pineoblastoma. Pineocytomas have moderate cellularity and tend to form rosette patterns. Pineoblastomas are highly cellular tumors containing small, poorly differentiated cells. These tumors occasionally seed the neuroaxis or cause obstructive HYDROCEPHALUS or Parinaud's syndrome. GERMINOMA; CARCINOMA, EMBRYONAL; GLIOMA; and other neoplasms may arise in the pineal region with germinoma being the most common pineal region tumor. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, p2064; Adams et al., Principles of Neurology, 6th ed, p670)