Hello, As per my clinical experience, the tumor between cella and brain stem can be presenting with various clinical features as: - Focal neurologic signs - Limb weakness, paresthesia - Balance issues - Vertigo and tinnitus sensation - Abnoramlities of pupillary reflex - Ischemia of the part of brain tissue as there may be vascular compromise through tumor suppression of intracranial blood vessels - Convulsions or seizures in many cases - Memory issues if involving hippocampus region Treatment depends upon the lesion location, whether it is involving major brain structures or not. The stereotactic surgical intervention, laser ablation, focused radiotherapy, chemotherapy, immunotherapy in case of palliative care are various available options for the case. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Bhagyesh V. Patel, General Surgeon