Name | Pinealoma |
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Synonyms | Mixed Pineocytoma Pineoblastoma | Mixed Pineocytoma-Pineoblastoma | Mixed Pineocytoma-Pineoblastomas | Neoplasm, Pineal | Neoplasms, Pineal | Pineal Gland Tumor | Pineal Gland Tumors | Pineal Neoplasm | Pineal Neoplasms | Pinealocytoma | Pinealocytomas | Pinealomas | Pineal Parenchymal Tumor | Pineal Parenchymal Tumors | Pineal Tumor | Pineal Tumors | 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 |
Definition | 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) |
Categories | Cancer | Nervous system disease |
MeSH® ID | D010871 |
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Pinealoma | |
Pineal Teratoma |