What is Glucagonoma? Let's talk about this rare condition!

The pancreas is a small but very important organ in your body. It produces several hormones that our body needs. So, sometimes, a rare type of cancer that develops in the pancreas can cause problems. That's what this condition is called Glucagonoma . Maybe you've suddenly developed diabetes, or you've developed something like a strange rash on your skin, it's very important to be aware of this.

What is a glucagonoma? Simply put...

Glucagonoma is a very rare cancerous tumor that develops in your pancreas. This tumor produces too much of a hormone called glucagon. Now you may be wondering what this glucagon is.

Glucagon is a very important hormone that helps control our body's sugar level, that is, blood glucose level. It is made by alpha cells, a special type of cell in your pancreas. Imagine if you haven't eaten for a while, if you exercise really hard, or if you eat a protein-rich meal, your blood sugar level can drop, right? That's when this glucagon comes in, releases the sugar stored in your liver, that is, glycogen , and brings the blood sugar level back up. It's like someone who helps maintain the sugar balance in our body.

However, when there is a glucagonoma, this glucagon hormone is produced in excess. Then our body cannot handle it. The combination of symptoms that occur due to this is called Glucagonoma Syndrome . This can lead to many complications such as skin problems and diabetes.

This type of cancer, called glucagonoma, belongs to the category of pancreatic neuroendocrine tumors , or islet cell tumors . Most often, these tumors develop in the tail or middle part of the pancreas.

Is this really cancer?

Yes, most of the time, glucagonoma is cancer . The sad thing is, even when it is diagnosed, in about 50% of cases, that is, about one in two, this cancer may have spread (metastasized) to other parts of the body, especially the liver .

How common is this condition?

Glucagonoma is actually a very rare condition. Less than one in a million new cases are diagnosed each year. It most often affects people between the ages of 50 and 70 .

What are the symptoms of this?

Glucagonomas often grow slowly . So, unless your body produces enough glucagon to cause problems, you may not have any symptoms.

However, when a glucagonoma produces too much glucagon and the body cannot handle it, the previously mentioned glucagonoma syndrome occurs.It occurs. Then, you will see clear symptoms. If you have these symptoms, it is very important to see a doctor as soon as possible.

Skin rash (Necrolytic Migratory Erythema - NME)

This is the main and most common symptom of glucagonoma syndrome. About 90% of people with this syndrome develop this skin problem. It is called necrolytic migratory erythema (NME) .

Imagine, your skin, especially in the private parts, buttocks, and lower legs, starts to develop red, itchy, and sometimes painful spots. These later turn into blisters, crack, and crust over. Even after they heal, a brown spot may remain. This can form in one place, heal, and then reappear in another place. It's like a rash that moves from place to place.

Other features of NME:

• This can come and go, and it can move around the body .
• It can be very itchy and painful at first.
• The rash turns red and then blisters and forms a crust. After healing, a brown spot may remain.
• This can lead to things like tongue sores (glossitis ), mouth sores, chapped lips, and angular cheilitis .
• Swelling of the eyelids ( blepharitis ), hair loss, and nail problems may also occur.

Diabetes symptoms

This syndrome causes high blood sugar levels ( hyperglycemia ), which can lead to diabetes. Symptoms of diabetes include:

• Being thin for no reason.
• Frequent excessive thirst (Polydipsia) .
• Frequent urination ( polyuria ), especially at night.
• Excessive hunger ( Polyphagia ).

Other symptoms of (glucagonoma syndrome)

There are several other symptoms:

• Chronic diarrhea .
• Low hemoglobin in the blood (anemia ). This can cause fatigue and dizziness.
• Blood clots, especially in the deep veins of the legs ( Deep Vein Thrombosis (DVT) ).

Symptoms related to the mental and nervous system

Sometimes, you may also see symptoms related to the mental and nervous system, such as:

• Depression
• Dementia
• Agitation
• Hyperreflexia (speeding up of body responses)
• Staggering gait (ataxia )
• Mental disorders ( Psychosis))
• Irrational fears and suspicions ( Paranoid Delusions )

What causes glucagonoma?

Most of the time, doctors don't know the exact cause of glucagonoma. However, in about 10% of cases, this cancer is linked to a genetic condition called Multiple Endocrine Neoplasia type 1 (MEN type 1) .

However, not everyone with MEN type 1 develops glucagonoma. That too is a very small percentage.

How do you recognize this?

If you have the skin condition necrolytic migratory erythema (NME) mentioned earlier, a doctor may suspect glucagonoma. They may then perform tests such as:

• Fasting Blood Sugar Test: If the sugar level is high, glucagonoma can be suspected and associated diabetes can be confirmed.
• Fasting Glucagon Blood Test: Glucagon levels are abnormally high in glucagonoma – usually greater than 500 picograms per milliliter (pg/mL). Normal fasting glucagon levels are less than 150 pg/mL.
• Amino Acid Blood Test: Glucagonoma usually causes low levels of amino acids in the blood ( hypoaminoacidemia ).
• Complete Blood Count (CBC): This checks for anemia , as anemia can occur with glucagonoma.

Imaging tests like these can help confirm whether a lump is present:

• CT Scan
• MRI Scan
• Endoscopic Ultrasound

How is it treated?

The treatment of glucagonoma largely depends on whether the cancer is limited to the pancreas (localized) or has spread to other parts of the body (metastasized) .

How to control symptoms first

The first step is to control the symptoms and complications caused by excess glucagon. This is treated as follows:

• Medications to control excess glucagon: Injections called Octreotide and Lanreotide help reduce the effects of excess glucagon and stop glucagon production. These medications can even slow the growth of tumors. They also provide relief from symptoms of NME, diabetes, diarrhea, and nervous system disorders.
• Diabetes management: You may need oral diabetes medication or insulin injections to keep your blood sugar levels within the right range.
• Nutritional support:Total Parenteral Nutrition (TPN) , amino acid and zinc supplements can be given to reduce the effects of malnutrition.
• Treatment of NME skin disease: Antibiotics and corticosteroids can improve NME.
• Anticoagulant Therapy: Blood thinners like heparin help prevent deep vein thrombosis (DVT) .

If it is limited to the pancreas...

If the cancer is only in the pancreas, surgery is the main treatment . If the surgeon can completely remove the tumor, the disease is often cured . After the glucagonoma is removed, your glucagon levels should return to normal. Your symptoms should also go away.

If it has spread to other places (metastasized)...

Whenever possible, doctors recommend surgical removal of tumors. This may include removal of tumors in the pancreas, nearby lymph nodes, and liver.

But if the surgeon is unable to remove any or all of the lump, your medical team may recommend one or more of these treatments:

• Chemotherapy: This treatment works by destroying cancer cells and preventing them from growing.
• Radiofrequency Ablation: This uses heat from radio waves to kill cancer cells.
• Cryosurgical Ablation: This uses extremely cold chemicals, such as liquid nitrogen, to destroy cancer cells.
• Chemoembolization: This treatment blocks the blood supply to the cancer.

What is the prognosis for recovery from this condition?

The outlook for someone with glucagonoma depends on several factors:

• Your age and overall health .
• The size of the cancer tumor .
• Whether the cancer has spread or not .

If the cancer is confined to the pancreas, the outlook is usually good . Surgery to remove the tumor is often curative, but this is the case for only about 20% of glucagonoma patients.

Because glucagonoma is so rare, there is not enough data to say exactly how long you can live or what the outcome will be if the cancer spreads. Your medical team will be able to provide more information based on your specific situation.

Can this be prevented?

Because scientists don't know the cause of most glucagonoma cases, there's really nothing you can do to prevent it .

However, if one of your first-degree relatives (biological parents and siblings) has been diagnosed with MEN (Multiple Endocrine Neoplasia) , talk to your doctor about genetic testing. If you also have MEN, genetic testing can help detect cancers in their early stages.

Being diagnosed with cancer is a very upsetting experience. When it's something rare like glucagonoma, it's even more challenging. But remember, your medical team is there to answer your questions and support you. If you feel mentally and emotionally alone with glucagonoma, ask your doctor about programs and services that can help you.

Finally, things to remember (Take-Home Message)

So, even though glucagonoma is a very rare condition, it is important to be aware of it. Especially if you suddenly develop symptoms similar to diabetes along with a strange skin rash (NME), as mentioned, see a doctor without delay. If it is recognized early, it can be treated. Although this is rare, there are treatments.

Don't worry, you are not alone. Your doctor and medical team will help you through this journey. Stay strong and follow the advice they give you.

` Glucagonoma, pancreatic cancer, glucagon, diabetes, skin symptoms, hormones, rare cancers