The cerebellopontine (CP) angle is the CSF-filled space at the junction of the cerebellum and pons, seen on axial brain MRI. It contains cranial nerves VII and VIII and nearby vessels. MRI evaluates this angle for asymmetry or masses—classically vestibular schwannomas, meningiomas, and epidermoids—which can compress nerves and brainstem, causing hearing loss, tinnitus, or ataxia.

On a chest X‑ray, the normal costophrenic (CP) angles are sharp, acute recesses at the lung bases seen on upright films. They should appear well defined; blunting or loss of sharpness suggests pleural fluid (effusion), pleural thickening, or consolidation. Small effusions can cause subtle blunting, while complete obliteration indicates a larger fluid collection or other pathology needing further evaluation.

MRI is a non‑invasive scan using magnetic fields and radio waves to image anatomy and disease without injections. MRI CP commonly means contrast‑enhanced MRI (often C/P = plain and post‑contrast), where a gadolinium dye is given to better show blood vessels, inflammation, infections and tumours. Contrast improves lesion detection but has small risks (allergic reaction, kidney-related cautions).

A left CP angle tumor is a mass in the left cerebellopontine angle — the space between the cerebellum and pons near cranial nerves VII and VIII. Common types include vestibular schwannoma and meningioma. Symptoms: hearing loss, tinnitus, vertigo, facial numbness/weakness and balance problems. Diagnosis is by MRI with contrast; treatment ranges from monitoring to microsurgery or stereotactic radiosurgery depending on size and symptoms.

Cerebellopontine (CP) angle lesions often cause progressive unilateral sensorineural hearing loss and persistent tinnitus. Patients may have balance problems, dizziness or vertigo, and gait unsteadiness. Facial numbness, tingling or weakness from trigeminal or facial nerve involvement can occur, sometimes with swallowing or speech changes. Large lesions may cause headache, nausea, vomiting or signs of raised intracranial pressure.

A CP MRI is an MRI scan done to evaluate the brain in someone with cerebral palsy. It uses magnetic fields and radio waves to create detailed images that can show typical causes—such as periventricular white‑matter injury, cortical malformations, or hypoxic‑ischemic damage. The test is noninvasive, may need sedation for young children, and helps with diagnosis, prognosis, and treatment planning.