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  • CP Angle tumors or Cerebellopontine angle (CPA) tumors


    CPA tumors accounts for almost 5-10% of the intracranial tumors and most of them are benign. They are the most common neoplasms in the posterior fossa.

    Cerebellopontine angle (CPA) tumours can be divided into following types:

    Extra-axial tumours
  • Acoustic tumors or more precisely vestibular schwannomas
  • Meningioma
  • Epidermoid
  • Arachnoid
  • Intra-axial tumours
  • Parenchymal lesions such as
    • Astrocytoma
    • Ependymoma
    • Papilloma
    • Haemangioblastoma
    Extradural tumours
  • Glomus tumors
  • Bone lesions
  • Petrous apex lesions
  • Cholesterol granulomas
  • Epidermoid cysts
  • Mucoceles
  • Symptoms of CPA tumor
    The symptoms of CPA tumor vary according to the size and location of the lesion and may include some or all of the following:

  • Hearing loss
  • Tinnitus
  • Vertigo/unsteadiness
  • Disequilibrium
  • Headache
  • Facial hypesthesia
  • Diplopia
  • Vision loss/Blurring vision
  • Diagnosis of CPA tumors:

    Diagnosis of CPA tumors requires complete physical examination of the patient including an examination of the ear and assessment of hearing, cranial nerve, oculomotor and cerebellar function. In addition to these, diagnostic tests like CT scan and MRI are required to confirm the diagnosis and evaluate the prognosis of disease.

    Treatment of CPA tumors:

    Treatment depends upon the patient age, his medical condition, growth rate of tumor, and its pathologic behaviour. Some cases may get relief from diuretic therapy. But the main options for CPA tumor management include surgical resection, radiation therapy or observation by serial imaging. Very rarely, chemotherapy is considered for occasional malignant lesions.

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    Dr Shyam Sundar K

    MBBS , MS (Gen Surg), M.Ch. (Neuro) ReadMore

    Dr.Shyam Sundar Krishnan
    MBBS (Chennai), MS (Gen Surg), M.Ch. (Neuro)

    New No. 10, Old no 11, Parameswari Nagar,
    3rd Street, ADYAR,CHENNAI- 600 020,
    Tamil Nadu, India.

    +91 9952072279,+91 9962072279 shyamsundar_krishnan@yahoo.com
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