What is a cerebellopontine angle tumor?
Cerebellopontine angle (CPA) tumors are the most common neoplasms in the posterior fossa, accounting for 5-10% of intracranial tumors. Most CPA tumors are benign, with over 85% being vestibular schwannomas (acoustic neuromas), lipomas, vascular malformations, and hemangiomas.
Can Stomach Cancer travel to the brain?
Background. Brain metastases from gastric cancer are rare and late manifestation of the disease, occurring in less than 1% of gastric cancer patients. The prognosis is poor and median overall survival is 1.3–2.4 months.
What is gastric metastasis?
Gastric metastases are mostly singular but can be disseminated over the stomach, as in the case of malignant melanoma. Since gastric metastases appear in the late stage of a malignant disease, the therapy generally consists of systemic chemotherapy for the primary tumor rather than surgery.
What is a Cerebellopontine?
The cerebellopontine angle (CPA) is a triangular space located posterior to the pyramid, inferior to the tentorium, lateral to the pons, and ventral to the cerebellum.
What causes chemo belly?
Chemotherapy and radiation can prevent the small intestine from producing enough of the body’s required enzyme lactase, which can lead to bloating, gassiness, cramping or diarrhea when foods with lactose are eaten.
What is the second most common lesion of the cerebellopontine angle after vestibular schwannoma?
Arachnoid Cysts They compose ~1% of all intracranial lesions and the CPA is the second most common location, second to the sylvian fissure. Strangely, only ~50 cases of CPA arachnoid cysts have been reported in the literature and the average age at diagnosis is ~30 to 40 years.
What are the signs and symptoms of cerebellopontine angle tumor (CPA)?
Unilateral progressive sensorineural loss with retrocochlear signs is the most common first symptom in tumors of the cerebellopontine angle. However, tumors may reach diameters of several centimeters without any substantial hearing loss.
What are the possible masses at the cerebellopontine angle?
Other masses occurring in the cerebellopontine angle include meningiomas, epidermoid tumors, and metastases, which may cause similar symptoms, although the time scale of symptomatology is typically more rapid with metastatic lesions in this area. Figure 23-5. Magnetic resonance imaging (MRI) of a large acoustic neuroma with brainstem compression.
What is the cerebellopontine angle (CPA)?
The cerebellopontine angle (CPA) is the most common location of posterior fossa tumors. Common pathologic entities in the CPA include vestibular schwannomas, which account for 10% of all primary brain neoplasms, meningiomas, and arachnoid cysts.
What is a cerebellopontine cistern?
The cerebellopontine angle (CPA) cistern is a subarachnoid space within the posterior cranial fossa. About 6%–10% of all intracranial masses are found in this location.1–6 Vestibular schwannomas (VSs) are the most commonly encountered lesion in the CPA, followed by meningiomas. Together these masses account for 85%–90% of all CPA tumors.