CP Angle Tumours or Cerebellopontine Angle (CPA) Tumours
Cerebellopontine Angle Tumours account for almost 5-10% of the intracranial tumours and most of them are benign. They are the most common neoplasm in the posterior fossa. The cerebellopontine angle is a space filled with spinal fluid. Common pathologies in the CPA include vestibular schwannomas, which account for 10% of all primary brain neoplasms, meningiomas, and arachnoid cysts
Treatment Options
Treatment for CPA tumours depend upon the patient’s age, their medical condition, the growth rate of tumour, and the pathologic behaviour of the tumour. Some cases may be treated with diuretic therapy.
But the main options for CPA tumour management include:
- Surgical resection
- Radiation therapy
- Observation with serial imaging
Chemotherapy is very rarely considered for occasional malignant lesions.
What are the symptoms of CPA tumour?
The symptoms of this tumour vary according to the size and location of the lesion. Some general symptoms include
Extra axial tumours
- Acoustic tumours (vestibular schwannomas)
- Meningioma
- Epidermoid
- Arachnoid
Intra – axial tumours
- Parenchymal lesions
- Extradural tumours
- Glomus tumours
- Bone lesions
- Petrous apex lesions
- Cholesterol granulomas
- Epidermoid cysts
- Mucoceles
CPA tumours are diagnosed after complete physical examination of the patient, including an examination of the ear and an assessment of the patient’s hearing, the cranial nerve, oculomotor, and cerebellar function. Diagnostic tests like CT scan and MRI are required to confirm the diagnosis and to evaluate the prognosis for the disease.
