Craniopharyngioma: Symptoms, Causes, and Treatment Guide
Updated: 2 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: November 2026
Quick Answer
A craniopharyngioma is a rare, non-cancerous, slow-growing tumor near the pituitary gland that can affect vision, hormones and growth [1]. Treatment centers on brain surgery, often followed by radiation therapy [1]. More than 90% of people are alive five years after diagnosis [1], but tumors recur in 17% to 63% of cases [1], so lifelong monitoring with annual MRI scans is standard [1].
What the research says
Complete removal lowers the chance of recurrence in adults. A systematic review and meta-analysis of 21 studies plus a single-center case series found recurrence rates of 17% after gross total resection, 27% after subtotal resection with radiotherapy, and 45% after subtotal resection alone. Recurrence risk was significantly lower with gross total resection than with subtotal resection alone (odds ratio 0.24, 95% CI 0.15 to 0.38) and with subtotal resection plus radiotherapy than with subtotal resection alone (odds ratio 0.20, 95% CI 0.10 to 0.41), but gross total resection versus subtotal resection plus radiotherapy did not differ significantly (odds ratio 0.63, 95% CI 0.33 to 1.24) (PubMed: Dandurand et al., Neurosurgery, 2018 [2]).
Proton beam radiation showed high tumor control in a pooled analysis. A meta-analysis of 8 studies covering 393 patients treated with proton beam therapy reported local control rates of 99% at 3 years and 93% at 5 years, with overall survival of 100% at both time points. Most side effects were mild (grade 1-2), but late effects included vascular and visual problems, hypothalamic obesity, hormone deficiencies, and panhypopituitarism (PubMed: Li et al., Radiat Oncol, 2024 [3]).
Vision most often stays the same after treatment in children, but outcomes differ by treatment. A systematic review of 59 studies covering 2,655 children found that overall visual status improved in 27.6% of outcomes after surgery alone, stayed unchanged in 50.3%, and deteriorated in 22.1%. With surgery plus adjuvant radiotherapy, vision improved in 27.4%, was unchanged in 63.2%, and deteriorated in 9.4%, while radiation alone had the highest rate of deterioration (36.8%). The authors call for larger standardized studies (PubMed: Colliander et al., Childs Nerv Syst, 2024 [4]).
What Is a Craniopharyngioma?
A craniopharyngioma is a rare, benign (non-cancerous) tumor that develops near the pituitary gland [1]. It grows slowly, but its location makes it far from harmless. As it expands, it can press on the cranial nerves responsible for vision and on the endocrine system that controls your body's hormonal function [1].
The main treatments are surgery and radiation therapy. For a special papillary subtype, chemotherapy has also emerged as an option [1]. More than 90% of people with this tumor are alive five years after diagnosis [1]. Even so, providers treat craniopharyngiomas as a chronic condition. That is because treatment does not always cure the conditions the tumors cause, and because this kind of tumor often comes back after treatment [1].
Key Fact | Detail |
Full name | Craniopharyngioma |
Tumor type | Rare, benign, slow-growing |
Location | Near the pituitary gland |
Who it affects | Children aged 5–14 and adults aged 50–74 [1] |
Incidence | About 2 people per 1 million per year [1] |
Main treatments | Surgery and radiation therapy; chemotherapy for one subtype |
Five-year survival | More than 90% of people [1] |
Recurrence | 17% if fully removed; 25–63% if partially removed [1] |
Who Is Affected and How Serious Is It?
Each year, approximately 2 people per 1 million are diagnosed with one of the two types of craniopharyngioma: the adamantinomatous type and the papillary type [1]. These tumors typically surface in two age groups — children aged 5 to 14 and adults aged 50 to 74 [1]. The adamantinomatous type can appear in all age groups, whereas papillary subtypes are almost always found in adults [1].
This is a serious medical condition that may require life-long treatment [1]. Roughly half of all surgically removed tumors come back over time, and the tumors cause several medical conditions that remain even after removal [1].
How Is It Different from a Pituitary Adenoma?
These two tumors are easy to confuse, but they are distinct. The table below summarizes the key differences.
What are the symptoms and warning signs of craniopharyngioma?
Craniopharyngioma symptoms are linked to conditions that develop when the tumor presses on the pituitary gland, the hypothalamus, the optic nerves, and the brain. Symptoms can take years to surface, and because they mimic many other conditions, they can make a quick diagnosis difficult [1]. In children, effects on growth and development are often more obvious than in adults. In both children and adults, vision can be affected, particularly parts of the peripheral vision [1].
Conditions Caused by Pressure on the Pituitary Gland
Your pituitary gland manages many hormonal functions. Pressure from a craniopharyngioma can cause a set of specific hormone-related conditions.
Condition | What Happens |
Growth hormone (GH) deficiency | Affects children's growth rates; in adults it may cause low energy, osteoporosis, weak muscles, higher LDL cholesterol, and heart problems [1] |
Gonadotropin deficiency | Often causes delayed puberty; women may stop having periods (amenorrhea) [1] |
ACTH deficiency | Weakness, tiredness, weight loss, loss of appetite, nausea, vomiting, and low blood pressure [1] |
Thyroid stimulating hormone (TSH) deficiency | Fatigue, irregular periods, and forgetfulness [1] |
Central diabetes insipidus (CDI) | Extreme thirst and frequent urination; can lead to dehydration, irregular heartbeats, fever, confusion, and seizures [1] |
Conditions Caused by Pressure on the Hypothalamus
Your hypothalamus controls body processes such as mood, hunger, thirst, sleep patterns, and sexual function [1]. Pressure on this structure sets the stage for its own set of conditions.
Condition | What Happens |
Hypothalamic obesity | Obesity that persists even after changing eating and exercise habits [1] |
Froehlich's syndrome | Constant hunger leading to obesity; children may develop more slowly, and some have poor vision and intellectual disabilities [1] |
Non-24-hour sleep-wake syndrome | A sleep disorder that prevents following a typical schedule and can cause severe sleep deprivation [1] |
How the Tumor Affects Vision
Craniopharyngiomas often develop very close to the optic nerves. Pressure on those nerves may cause blurred vision or peripheral vision problems [1]. In both children and adults, parts of the peripheral vision are particularly likely to be affected.
What causes craniopharyngioma and who is at risk?
Researchers have not pinpointed a cause for craniopharyngiomas. They believe these tumors develop from cells that helped to form the pituitary gland during development. Something causes these cells to transform into abnormal cells that multiply and grow [1]. Because the cellular changes happen while the body is being formed, these tumors cannot be prevented [1].
How is craniopharyngioma diagnosed?
Diagnosis starts with a careful conversation. Your healthcare provider may ask about your medical history and physical development. If a child is being evaluated, the provider may also ask about cognitive development, vision, unusual thirst, and how often the child urinates [1].
Several tests then confirm or rule out the tumor.
Test | What It Does |
Blood tests | Measure certain hormone levels [1] |
Urinalysis | Checks for signs of kidney problems [1] |
CT scan | Uses a series of X-rays and a computer to create three-dimensional images of soft tissues and bones [1] |
MRI | A painless test using a large magnet, radio waves, and a computer to produce very clear images of organs and structures [1] |
Biopsy | Takes tissue samples for examination under a microscope [1] |
What are the treatment options for craniopharyngioma?
Craniopharyngiomas are typically treated with brain surgery, performed either through the nose using a small scope or through an opening in the skull called a craniotomy [1]. The goal is to remove as much of the tumor as possible while minimizing damage to the pituitary gland, hypothalamus, and optic nerves [1].
Even so, some people need hormonal medications afterward [1]. Post-surgery radiation therapy may also be recommended, especially if the entire tumor could not be safely removed [1]. For a special papillary subtype, chemotherapy has emerged as a treatment option [1].
Treatment | How It Works |
Transnasal surgery | The tumor is removed through the nose using a small scope [1] |
Craniotomy | The tumor is removed through an opening in the head [1] |
Radiation therapy | Often used after surgery, especially when the whole tumor could not be safely removed [1] |
Chemotherapy | An option for a special papillary subtype [1] |
Hormone medications | Replace hormones the damaged pituitary can no longer supply [1] |
Why the Surgery Is So Challenging
Surgery to remove a craniopharyngioma is demanding, for two main reasons. First, these tumors develop near delicate nerves and the pituitary gland, which are at risk of damage during the operation. Second, these tumors cling to the pituitary gland and the nerves that control vision — removing one has been compared to pulling a sticky label off an envelope without tearing the envelope [1].
Some providers believe the surgery may cause as much damage as the tumor itself [1]. That is why it matters to understand the goal of surgery and the side effects you may expect before the procedure.
What is the outlook for craniopharyngioma?
Many people live for years after treatment, and more than 90% of patients are alive five years after diagnosis [1]. The main challenge is recurrence. As many as 17% of tumors that are completely removed during surgery come back, and that number rises to 25% to 63% for partially removed tumors [1]. Most craniopharyngiomas that return do so within three years after surgery [1].
How can people live with craniopharyngioma as a chronic condition?
Many healthcare providers consider a craniopharyngioma a chronic condition that needs long-term care and monitoring. Three reasons stand out. You may need additional surgery to remove a recurring tumor. If the tumor or the surgery caused problems with the pituitary or hypothalamus, hormone replacement therapy may be needed. And children with tumor-related hypothalamic obesity have an increased risk for other health problems, so families may need support and guidance on food choices and regular exercise [1].
Here is what long-term care typically looks like.
Prevention: Can Craniopharyngiomas Be Prevented?
No. These tumors cannot be prevented. They develop from changes in cells that occurred while the body was being formed [1], so there are no known lifestyle steps or habits that reduce the risk.
When should you see a healthcare provider about craniopharyngioma?
If you or your child show signs such as unexplained vision changes, slow growth or delayed puberty, extreme thirst with frequent urination, or persistent headaches, schedule an evaluation with a healthcare provider. Because craniopharyngioma symptoms can mimic other conditions and take years to surface [1], early assessment of persistent symptoms is your best defense.
What questions should you ask your provider about craniopharyngioma?
Craniopharyngiomas are rare and can cause several challenging medical conditions that may require long-term care. If you or your child has been diagnosed, consider bringing these questions to your appointment: What is this tumor and how does it work? Can it cause more serious medical problems? Why did I (or my child) develop it? What are the treatment options, and what are the chances of success? Will treatment make symptoms go away? What short-term and long-term side effects should we expect? And what happens if the tumor comes back [1]?
Conclusion
A craniopharyngioma is a rare, benign, slow-growing tumor near the pituitary gland that most often appears in children aged 5–14 and adults aged 50–74 [1]. Although it is not cancerous, it can disrupt vision, hormones, growth, sleep, and weight, and about half of surgically removed tumors recur [1]. Surgery through the nose or via craniotomy — often followed by radiation therapy — is the standard treatment, and more than 90% of patients are alive five years after diagnosis [1]. Because recurrence is common, lifelong follow-up with annual MRI scans [1] is essential.
When to Seek an Evaluation
If you or your child has persistent vision changes, unexplained growth delays, extreme thirst with frequent urination, or hormone-related symptoms, schedule an evaluation with a healthcare provider.
Related reading: brain tumor guide
Frequently Asked Questions
1. What is a craniopharyngioma?
A craniopharyngioma is a rare, benign (non-cancerous), slow-growing tumor that develops near the pituitary gland. It can affect the cranial nerves responsible for vision and the endocrine system, which controls hormonal function. Main treatments are surgery and radiation therapy.
2. Who is most likely to get a craniopharyngioma?
A craniopharyngioma affects about 2 people per 1 million each year and typically appears in two age groups: children aged 5 to 14 and adults aged 50 to 74. The adamantinomatous type occurs in all ages, while the papillary type is almost always found in adults.
3. Is a craniopharyngioma cancer?
No. It is a benign (non-cancerous) tumor. However, it is treated as a serious, chronic condition because it can damage nearby structures, often recurs after surgery, and may cause lifelong hormone problems.
4. What are the symptoms of a craniopharyngioma?
Symptoms include vision or peripheral vision problems, growth delays in children, delayed puberty, extreme thirst with frequent urination, fatigue, and sleep disturbances. They result from pressure on the pituitary gland, hypothalamus, and optic nerves, and can take years to appear.
5. What conditions does it cause through pituitary pressure?
A craniopharyngioma can cause growth hormone deficiency, gonadotropin deficiency (delayed puberty or amenorrhea), ACTH deficiency (weakness, nausea, low blood pressure), TSH deficiency (fatigue, irregular periods), and central diabetes insipidus (extreme thirst and urination).
6. How is a craniopharyngioma diagnosed?
Diagnosis combines a medical history review with blood tests for hormone levels, urinalysis, CT scans, MRI scans, and sometimes a biopsy. In children, providers also assess cognitive development, vision, thirst, and urination frequency.
7. How is a craniopharyngioma treated?
Treatment typically involves brain surgery — through the nose with a small scope or via craniotomy — to remove as much of the tumor as possible. Radiation therapy often follows, chemotherapy is an option for a papillary subtype, and hormone medications may be needed afterward.
8. Why is the surgery so challenging?
Craniopharyngiomas cling to the pituitary gland and vision-controlling nerves, like a sticky label on an envelope. Removing them risks damaging delicate structures, so some providers believe surgery may cause as much damage as the tumor itself.
9. What is the survival rate for craniopharyngioma?
More than 90% of people with a craniopharyngioma are alive five years after diagnosis. Many people live for years after treatment, though ongoing monitoring is required.
10. How often does a craniopharyngioma come back?
Up to 17% of completely removed tumors recur, and 25% to 63% of partially removed tumors do. Most recurrences happen within three years after surgery, and about half of all surgically removed tumors eventually come back.
11. Can craniopharyngiomas be prevented?
No. Researchers believe these tumors develop from cells involved in forming the pituitary gland that transform and multiply during body formation, so no prevention is known.
12. What long-term care is needed after treatment?
Annual check-ups, annual MRI scans to check for recurrence, hormone replacement therapy if the pituitary was damaged, and help managing vision problems and conditions like hypothalamic obesity.
References
Cleveland Clinic. Craniopharyngioma. Cleveland Clinic. May 9, 2022. https://my.clevelandclinic.org/health/diseases/22989-craniopharyngioma
Dandurand C, Sepehry AA, Asadi Lari MH, Akagami R, Gooderham P. Adult craniopharyngioma: case series, systematic review, and meta-analysis. Neurosurgery. 2018;83(4):631-641. doi:10.1093/neuros/nyx570. PMID: 29267973.
Li Z, Li Q, Tian H, et al. Proton beam therapy for craniopharyngioma: a systematic review and meta-analysis. Radiat Oncol. 2024;19(1):161. doi:10.1186/s13014-024-02556-w. PMID: 39543740.
Colliander R, Sharma S, Shlobin NA, et al. Visual outcomes after treatment of craniopharyngioma in children: a systematic review. Childs Nerv Syst. 2024;40(6):1641-1659. doi:10.1007/s00381-024-06328-5. PMID: 38416204.
Medical Disclaimer
This article is for informational purposes only and does not constitute medical advice. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read here.
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