Cerebellopontine (CP) Angle Tumor: What is in a Name?

Tumors involving the Cerebellopontine (CP) angle region are quite common, representing 6 to 10% of all intracranial tumors. The most frequent type of tumor in this region is the acoustic neuroma, also known as a vestibular schwannoma. Following closely is the meningioma, and together these two types account for almost 85-90% of lesions in the CP angle region. Often, these tumors are benign, meaning they are non-cancerous and non-malignant. However, in rare cases, skull base sarcomas, carcinomas, and metastases can present in this region, with less than 2% being malignant.

At Hannah Joseph Hospital, we specialize in diagnosing and treating CP angle tumors with the latest medical advancements and a compassionate approach.

Symptoms and Signs

Hearing loss is the most common symptom, present in 95% of CP angle tumor cases. Tinnitus, or ringing in the ears, affects more than 70% of patients. Other symptoms include:

  • – Unsteadiness while walking
  • – Headache
  • – Facial numbness
  • – Double vision
  • – Decrease in taste sensation

These symptoms usually have an insidious onset, progressing gradually over time as these tumors are generally slow-growing. Symptoms and signs arise due to direct compression of neural structures such as cranial nerves, the brainstem, and the cerebellum. Sometimes, the tumor becomes large enough to obstruct cerebrospinal fluid (CSF) pathways, leading to hydrocephalus and raised intracranial tension. If unchecked, this progression can lead to coma, respiratory depression, and even death.

Diagnosis and Treatment

At Hannah Joseph Hospital, we prioritize accurate diagnosis and effective treatment for CP angle tumors.

Diagnosis

MRI with Gadolinium Contrast: This is the diagnostic procedure of choice, providing clear demarcation of the tumor from normal brain structures with a sensitivity or tumor pickup rate close to 98%.

MR-Angiogram: This shows displacement of the blood vessels and the vascularity of the tumor, particularly useful for meningiomas and other skull base tumors.

CT Scan: This reveals any widening of the bony canal or erosions caused by the tumor in the CP angle region.

Treatment

Microsurgical Resection: This is recommended for large tumors occupying the CP angle. Factors such as the age and medical condition of the patient and the pathological behavior of the tumor are considered before planning the type of surgery. Due to the presence of many vital neurological structures closely associated with these tumors, excision is undertaken with utmost care. We use high magnification microscopes, ultrasonic surgical aspirators (CUSA or SONOCA), and intraoperative neurophysiological monitoring for the facial nerve and brainstem.

Radiation Therapy: Small tumors and residual lesions can be treated with radiation therapy. Techniques like X knife, Gamma knife, or Cyber knife radiosurgery are ideal for this location.

Hydrocephalus Management: If hydrocephalus is present, a ventriculoperitoneal shunt or endoscopic ventriculostomy may be required in addition to tumor surgery.

Advanced Care at Hannah Joseph Hospital

At Hannah Joseph Hospital, we pride ourselves on providing comprehensive and advanced care for patients with CP angle tumors. Our team of skilled neurosurgeons, radiologists, and support staff work together to ensure the best possible outcomes for our patients.

Why Choose Hannah Joseph Hospital?

  • – Expertise: Our neurosurgeons are highly trained and experienced in treating CP angle tumors using the latest techniques and technologies.
  • – Comprehensive Care: From diagnosis to post-operative care, we offer a holistic approach to treatment.
  • – State-of-the-Art Equipment: We use advanced diagnostic tools and surgical equipment to ensure precision and safety in all procedures.
  • – Patient-Centered Approach: We prioritize our patients’ comfort and well-being, providing personalized care tailored to their unique needs.

Trust Hannah Joseph Hospital for Expert Neurosurgical Care

When facing a CP angle tumor diagnosis, trust Hannah Joseph Hospital for expert, compassionate care. Our dedicated team is here to guide you through every step of the journey, from accurate diagnosis to advanced treatment options. With our state-of-the-art facilities and patient-centered approach, we are committed to achieving the best outcomes for our patients.

If you or a loved one is experiencing symptoms of a CP angle tumor, contact Hannah Joseph Hospital today. Let us help you navigate your healthcare journey with confidence and care. Your health is our priority.

Author:

Dr. M. J. Arunkumar, M. Ch., DNB
Senior Consultant Neurosurgeon
Hannah Joseph Hospital
Madurai