PubMed · 14394319
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R L DRAKE, B E STOFER, L V ZANT. 1955. Ectopic pinealoma.. https://doi.org/10.1212/wnl.5.7.518
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Colloid cysts of the third ventricle are rare intracranial tumors, accounting for 0.5% of intracranial tumors. Colloid cysts represent 2% of gliomas, are more common in men than women, and usually are diagnosed between the third and fifth decades of life. The primary presenting complaint of this disorder is headache. The headaches are described as intermittent, severe and intense, and of short duration and usually are located frontally. The main associated features are nausea and vomiting. The headache can be relieved by lying down, which is unusual for headaches secondary to intracranial tumors. Colloid cysts of the third ventricle are diagnosed by computed tomography or magnetic resonance imaging and treatment is surgical. This rare type of headache disorder is significant because it is associated with sudden death. Recognition of the unusual features of colloid cyst headache may result in decreased mortality in this disorder.
We report a case of malignant intraventricular meningioma with CSF drop metastases and an implantation metastatic subgaleal nodule in a 53-year-old woman. Malignant intraventricular meningiomas are rare with only seven cases being reported in the literature. These tumours can be very aggressive and one should consider immediate postoperative radiotherapy.
We present the case of a 1-year-old girl with persistent vomiting who was found to have a disproportionately large immature teratoma in the third ventricle. Magnetic resonance imaging demonstrated a heterogeneous intracranial mass in the third ventricle, with a compressed left cerebral hemisphere and hydrocephalus. Bifrontal craniotomy via a transchiasmatic approach achieved total resection of the tumor. No significant neurologic deficit was seen except for double vision and disturbances in eye movement. Third ventricle immature teratoma, although extremely rare, may present as a suprasellar mass lesion and hydrocephalus. The prognosis after gross total resection is favorable; however, radiotherapy is usually postponed until 36 to 48 months of age in order to avoid complications such as stunted growth, endocrine disturbances and neuropsychologic problems.