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Living with Pineal parenchymal tumor of intermediate differentiation

A rare tumor of the pineal gland in the brain, of intermediate grade, that can affect people of any age.

Understanding Pineal parenchymal tumor of intermediate differentiation

Pineal parenchymal tumor of intermediate differentiation is a rare tumor of the pineal gland in the brain.

GARD describes it as a WHO grade II or III tumor of intermediate grade that can affect all ages. Under the microscope it is made of sheets or large lobules of similar cells. The cells show mild to moderate changes and low to moderate rates of cell division.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet.

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include brain and nervous system specialists and cancer specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Cancer specialists (oncologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with National Brain Tumor Society
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
What grade is my tumor, and what does that mean for treatment?
Which specialists should be on my care team?
How will the tumor be monitored after treatment?

Quick facts

GARD doesn't describe a cause for this condition yet.

Neurological

Also known as: pineal parenchymal tumor of intermediate differentiation (morphologic abnormality); pineal parenchymal tumour of intermediate differentiation (morphologic abnormality)

Patient organizations

Source: NIH GARD · Pineal parenchymal tumor of intermediate differentiationGARD ID 10644 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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Explore actively recruiting Pineal parenchymal tumor of intermediate differentiation studies with HealthSpark.

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