Types of Tumors: Benign, Malignant & Premalignant

What is a Tumor?


Tumors vs. Cysts

Sometimes patients may mistake a cyst for a growing tumor. A cyst is an abnormal growth on the body, but it is not the same as a tumor. A cyst is a sac filled with fluid, air or semisolid material. They commonly grow on the skin, breasts, ovaries, testes, kidneys or the spine. Typically they develop as a result of an infection, a defect during fetal development or from trauma to the skin.

Benign Tumors

Benign tumors are not cancerous. They do not spread or destroy nearby tissue and they may be easier to remove. In most cases, benign tumors do not return once they are removed. However, benign tumors can cause life-threatening damage if they develop in the brain and they may also develop into cancer.

Types of Benign Tumors

Benign tumors can grow on any part of the body. Usually researchers classify them based on where they grow:

Adenomas – grow on thin layers of tissue on internal organs and glands

Fibroids – develop on the tissues

Nevi tumors – moles on the skin

Osteochondromas – cartilage and bone overgrowth

Even though they are not cancerous, some benign tumors may cause health complications. For example, fibroids may cause pain and abdominal bleeding. A tumor may also restrict blood flow if it presses on a blood vessel and pain if it puts pressure on a nerve. In addition, a mole is typically harmless, but if it changes or spread it may be a sign of cancer.

Signs of a Benign Tumor

pelvic painheadachesnauseaseizures

Risk Factors

In most cases, physicians cannot directly identify the exact reason why a patient may develop a non-cancerous tumor. For example, researchers do not link brain tumors to any specific causes, but there are factors that can increase the risk, including radiation exposure, family history and a compromised immune system. These do not necessarily mean that a patient will develop a tumor and other patients may develop one without any common risk factors.

Malignant Tumors

Malignant tumors develop the same way as benign growths—from rapid and abnormal cell growth. But unlike benign growths, these are cancerous and they spread to other tissue and organs nearby. The cells can break off and travel through the bloodstream, the lymphatic system or the body cavities. These cells can grow very rapidly and form new cancerous growths in different tissues and organs.

Types of Cancer

Medical researchers group different types of cancer based on the type of cell that they start in. They may also classify them based on where they develop in the body, such as breast cancer or lung cancer. Physicians typically recognize five main types of cancer.

Carcinoma – starts in the epithelium cells in the skin and tissue lining

Sarcoma – begin in connective tissues in the cartilage, nerves and bone

Leukemia – starts in blood forming tissue, such as the bone marrow

Lymphoma and myeloma – develop in the immune system

Brain and spinal cord cancer – begin in the central nervous system

Cancer Symptoms

Cancer patients develop symptoms depending on the type of cancer and where it develops in the body. According to research, it can cause almost any symptom. Signs and symptoms develop because it puts pressure on the organs, blood vessels and the nerves. Sometimes it develops where it does not cause symptoms until the tumor is large. In other cases, even a very small tumor can cause symptoms. 

feverbladder cancerskin cancer


Risk Factors for Cancer

Mutations or changes in DNA structure increase the risk of cancer. The mutations in DNA structure may be inherited or acquired from environmental factors like smoking, radiation, diet, UV exposure, infections, obesity or chronic inflammation.

Premalignant Tumors

Lastly, premalignant tumors are not cancerous, but they may develop into cancer without treatment. It is often difficult to predict how tumors will behave or change. There are various types of premalignant tumors, including:

Actinic keratosis

human papilloma virus (HPV

Squamous metaplasia – growths in the bronchial tubes that connect to the lungs

Leukoplakia – thick, raised, painless and irregularly shaped white patches in the mouth

Treatment for Tumors

Since tumors are very different in size, type and location, treatment options vary widely. Typically, patients with benign tumors do not require any treatment. But sometimes physicians may need to reduce the size or remove the growth completely. Similarly, physicians may remove a premalignant tumor in an attempt to keep it from turning cancerous. However, malignant tumors require treatment because they are already cancerous.

Cancer Treatment

There are different objectives of cancer treatment, depending on the type and stage of the disease. Generally, the objectives aim to destroy cancer cells, reduce the risk of recurrence and help relieve the patient’s symptoms. Common types of cancer treatment options include surgery, chemotherapy, radiation therapy, immunotherapy, hormone therapy, stem cell transplants and targeted drug therapy.

Surgery aims to physically remove the cancer while chemotherapy uses chemicals to destroy the cancer cells. On the other hand, radiation therapy uses radiation beams to destroy the cancer cells and stem cell transplant replaces cancer cells in the bone marrow with healthy ones. Immunotherapy uses antibodies to fight off cancer cells, while hormone therapy blocks hormones that stimulate irregular cell growth. Similarly, targeted drug therapy uses medications that interfere with cancer cell growth.

Complementary & Alternative Medicine

Additionally, patients may also find relief from alternative treatment methods. They may help minimize the patient’s physical symptoms or the side effects that conventional treatment may cause, such as pain, fatigue and nausea. Physicians may recommend a special diet to the patient or recommend massage, acupuncture, tai chi or yoga.

Supplements for General Health



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Ginger Root

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Green Tea

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The Bottom Line

A tumor is a growth in the body that develops from abnormal cell growth. They may be benign, premalignant and malignant. Benign growths are not cancerous and do not spread to other tissues and organs. Premalignant tumors are not cancerous, but they may develop into cancer. Malignant tumors are cancerous and they may spread to other parts of the body very quickly. Researchers have not identified a specific cause for tumors or cancer, but there are risk factors that may contribute, including radiation exposure, smoking, heredity and infections.

Treatment varies based on the type of tumor and where it develops in the body. Benign and premalignant tumors may require surgical removal so that they do not turn cancerous. Cancer treatment also varies and it may involve surgery, chemotherapy, radiation therapy or hormone therapy. Patients can also try alternative and complementary treatment options, such as supplements, with a doctor’s approval. Natural supplements are not a cure for any health condition, but they may help promote overall health.

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