Short answer · Medically reviewed summary · Last updated: 2026-04-07
A colloid cyst of the third ventricle is most commonly referred to by that name, though it is sometimes identified in clinical literature as a neuroepithelial cyst or a paraventricular cyst. While these terms are used interchangeably, colloid cyst remains the standard diagnostic term used by neurosurgeons and radiologists to describe this specific, benign, gelatinous-filled growth located in the brain. What are the alternative names for a colloid cyst? While colloid cyst is the nomenclature preferred by contemporary medical professionals, you may encounter several synonyms in older medical records or research papers.
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A colloid cyst of the third ventricle is most commonly referred to by that name, though it is sometimes identified in clinical literature as a neuroepithelial cyst or a paraventricular cyst. While these terms are used interchangeably, colloid cyst remains the standard diagnostic term used by neurosurgeons and radiologists to describe this specific, benign, gelatinous-filled growth located in the brain.
While colloid cyst is the nomenclature preferred by contemporary medical professionals, you may encounter several synonyms in older medical records or research papers. Historically, these lesions were sometimes described based on their location or their histological appearance. Common alternative names and descriptive terms include:
The term "colloid" refers to the thick, glue-like fluid found inside the cyst, which is distinct from the clear cerebrospinal fluid (CSF) found elsewhere in the brain. Because there is no major conflict in terminology, most physicians will readily understand these synonyms, though they will typically document the diagnosis officially as a colloid cyst.
The variation in naming often stems from the progression of diagnostic imaging. Before the advent of high-resolution MRI, clinicians often used broader terms like "intraventricular mass" or "paraventricular cyst" until the specific nature of the lesion could be confirmed. Furthermore, because a colloid cyst is a specific subtype of neuroepithelial cyst, some pathologists may use the broader category in their reports. In major classification systems, you will find it indexed as follows:
In current clinical practice, colloid cyst is the gold-standard term. Using this specific name is vital for clear communication between neurologists, neurosurgeons, and radiologists. If you see terms like "neuroepithelial cyst" on your medical chart, it is likely being used as a descriptive synonym. 292 people in the DiseaseMaps community have shared their journeys with a colloid cyst, and we encourage you to use the standard term when seeking support or discussing your treatment plan with your healthcare team to ensure you are accessing the most relevant research and community experiences.
Medical disclaimer: This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment; always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition.