pinealoma /pin·e·a·lo·ma/ (pin″e-ah-lo´mah) a tumor of the pineal body composed of neoplastic nests of large epithelial cells; it may cause hydrocephalus, precocious puberty, and gait disturbances.
pinealoma
pin·e·a·lo·ma (p n  - -l  m, p n-)n. pl. pin·e·a·lo·mas or pin·e·a·lo·ma·ta (-m -t) A neoplasm derived from the pineal body and characterized by large, round, or polygonal cells with large nuclei and small cells that resemble lymphocytes. |
pinealoma
[pin′ē·əlō′mə] pl. pinealomas, pinealomata
Etymology: L, pineas + Gk, oma, tumor
a rare neoplasm of the pineal body in the brain, characterized by hydrocephalus, pupillary changes, gait disturbances, headache, nausea, and vomiting.
pinealoma
a rare tumor of the pineal body composed of neoplastic nests of large epithelial cells; it may cause hydrocephalus, precocious puberty and gait disturbances.
pinealoma
A tumour of the pineal body, a small glandular structure that lies between the two superior colliculi in a depression below the splenium of the corpus callosum. It may result in a loss of the pupil light reflex, vertical gaze palsy (especially in children), hydrocephalus, as well as a disturbance of the secretion of melatonin, which is related to the diurnal dark-light cycles. Syn. pineoblastoma. See convergence-retraction nystagmus.
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