Colon cancer

Colon cancer refers to all malignant tumors of the intestine. Colon cancer is the second most common cancer in both men and women and more than six percent of all Germans in the course of their lives comes down with this disease. Colorectal cancers rarely produce symptoms in the early stages, and almost always they are formed from benign colon polyps.

​Colorectal cancers often show no symptoms for a very long time. Only when the tumor is bleeding extensively, or if it constricts the intestine significantly, it shows typical symptoms like blood or mucus in the stool. Also intestinal cramps, stools that are narrow and pencil-thin, or like goat droppings, diarrhea and constipation with often nagging flatulence can also be signs of a bowel cancer. Due to the blood loss anemia can occur and loss of efficiency, fatigue and general weakness. As a result of the disease, many patients may suffer severe weight loss with the development of a tumor cachexia (wasting syndrome).

​Invisible (occult) bleeding, which can be determined with stool tests, is the only early symptom. In some countries, this test is used as a screening for colorectal cancer. 85 to 90 percent of malignant colorectal tumors are adenocarcinomas of the colon, which are derived from the glands of the intestinal mucosa. Often, central abscess (ulcer) and tissue destruction (necrosis) can be found when discovering the tumor.

​The main risk factors are age and the presence of colon polyps which often degenerate.  Also, a general genetic tendency cannot be ruled out: colorectal cancer in family member triples your risk obtaining colon cancer.  Also patients with ulcerative colitis are at risk. Patients with Crohn’s disease carry a slightly increased risk of colorectal cancer compared to the general population.

​Malnutrition is also considered a possible cause for colon cancer. This includes an excessive caloric intake, fat and meat-rich diet, and a low fiber diet.

​In industrial developed countries, the number of new cases of colorectal cancer has increased significantly in the last 30 years. Colon cancer is one of the most common malignancies in Central Europe with an annual number of new cases amounting to about 20-40 per 100,000 inhabitants. The global number of new cases is estimated at one million per year. Men are affected slightly more often than women, the gender ratio is about 60:40.

Recommended therapies for the treatment of colon cancer:

Whole-body Hyperthermia

The healing effect of whole-body hyperthermia for patients with colon cancer is that we can very quickly bring the body to high temperatures (up 40.5 °). This fast and high heating activates not only the immune system, but many degenerate cells of the colon carcinoma are destroyed by the fast floods of heat. In addition to the damage or removal of the cancer cells, the whole-body hyperthermia stimulates the immune system significantly without impacting the rest of the body. It triggers an immune cascade that activates and multiplies the white blood cells.

Locoregional Hyperthermia

The purely effective regional hyperthermia is recommended with colon cancer where the affected region is quickly heated to high temperatures (40 up to 44 ° C). This heating activates the immune system. Also, many degenerated cells of the colon tumour will be harmed or destroyed. In our day clinic at the Hyperthermia Centre Hannover we offer this partial body hyperthermia treatment according to the diagnosis of the patient, and only damaged or degenerated tissue is overheated, which guarantees very gentle treatment to our patients.

IPT - Low Dose Chemo

Patients with a colon cancer can be successfully treated at the Hyperthermia Centre Hanover with IPT, which uses the blood sugar-lowering hormone to inject drugs like chemotherapeutics more effectively in the tumor cells. Because the degenerated cells of the colon carcinoma have a higher basal metabolic rate than normal cells, they attempt to absorb sugar more quickly after a period of low blood sugar. The mechanism is via so-called insulin receptors. Because tumor cells in the colon have in general more receptors than normal cells, chemotherapy can therefore impact the malignant cells more effectively. As a result, the dosage of conventional chemotherapy protocols can be reduced, and thus the side effects can also be significantly lowered.

Infusions with high-dose vitamin C

At the Hyperthermia Centre Hannover we treat patients with colon cancer successfully with high-doses of vitamin C. The so-called Ascorbic acid is the best known vitamin, – and the most important antioxidant, i.e. it intercepts harmful free radicals in the body and makes them harmless – and in this way prevents degeneration in the cells. Vitamin C is also essential for the immune system and various restructuring processes in the body. When vitamin C is given in a high- dose, the treatment of colon carcinoma can be positively affected.

Ozone Therapy

Based on our experience in the Hyperthermia Centre Hannover, our patients with colorectal cancer are particularly responsive to ozone therapy. Ozone is a triatomic oxygen molecule. Its germicidal and disinfecting effect has been scientifically proven. In ozone treatment, the acute oxygen problem of the degenerated cells of the tumor is exploited. Blood is taken from the vein. This blood will be made incoagulable and mixed with an ozone-oxygen mixture. The thus enriched blood is returned to the vein.


Patients with colon cancer can benefit from the healing-effects of an oncolytic virotherapy using natural viruses to destroy cancer cells. A Virotherapy has very few side-effects. The therapy itself consists of several injections given to a patient according to a predetermined Virotherapy treatment plan. At our German cancer clinic, Dr. Mohamed Ali Zayen is a certified specialist of Virotherapy RIGVIR®. We provide Virotherapy as an outpatient treatment protocol and according to your individual treatment plan. The interval of every RIGVIR® injection is different from one protocol to another.