Pineocytoma is the least aggressive form of pineal parenchymal tumors, manifesting with symptoms such as Parinaud's syndrome (a group of eye movement abnormalities and pupil dysfunction, including deficiency in upward-gaze and convergence-retraction nystagmus), headaches, balance impairment, urinary incontinence, and changes in mood and that are not known to disseminate in a diffuse manner. They are usually associated with a good prognosis. The disease is MONDO_0016723 (pineocytoma). Also known as: Pineocytoma (WHO grade I), benign pinealoma, pinealocytoma, pineocytoma (disease), pineocytoma, benign.