General

Types of Cancer: Common Cancer Types and Their Characteristics

Types of cancer are groups of diseases that develop as a result of the uncontrolled proliferation of cells in the body and are classified according to the tissue from which they originate. In medical literature, cancers are generally categorized based on the organ, cell type, and biological behavior. The main types of cancer are defined as carcinoma, sarcoma, leukemia, lymphoma, and myeloma.

Among the most common types of cancer are lung cancer, breast cancer, prostate cancer, colorectal cancer, and stomach cancer. These cancers are among the most frequently observed diseases worldwide. Risk factors include genetic predisposition, environmental factors, smoking, dietary habits, and age.

Classification of cancer by organs is based on the anatomical region where the tumor develops. Cancer types that occur in different organs such as the lungs, liver, pancreas, thyroid, skin, and brain differ in terms of clinical features and treatment approaches. Imaging methods and pathological examination are used in the diagnostic process.

The biological characteristics of cancer types are determined by the tissue from which tumor cells originate and their growth behavior. Carcinomas develop from epithelial tissue, while sarcomas originate from connective and supportive tissues. Hematological cancers arise from blood and bone marrow cells, and the treatment plan is arranged according to this biological classification.

Things You Should Know Information
Lung Cancer It is usually associated with smoking. It has two main types: small cell and non-small cell. It may present with symptoms such as cough, chest pain, and shortness of breath.
Breast Cancer It is the most common type of cancer in women. It may present with a mass in the breast tissue, discharge, or changes in shape. It can also rarely be seen in men.
Prostate Cancer It is a common type of cancer in men. It usually progresses slowly. It may present with symptoms such as difficulty urinating, frequent urination, and blood in the urine.
Colorectal Cancer It includes cancers of the large intestine and rectum. It may present with abdominal pain, blood in the stool, weight loss, and changes in bowel habits.
Stomach Cancer It is among digestive system cancers. It may present with symptoms such as stomach pain, loss of appetite, early satiety, and weight loss.
Liver Cancer It may be associated with cirrhosis and hepatitis B/C infections. Pain in the upper right abdomen, jaundice, and weight loss are common symptoms.
Skin Cancer (Melanoma and Others) Sun exposure is the most important risk factor. Newly formed or changing moles on the skin may be dangerous. Melanoma is the most aggressive type.
Cervical (Cervix) Cancer It is associated with HPV infection. It can be detected early with regular smear tests. Abnormal vaginal bleeding is a common symptom.
Ovarian Cancer It occurs in women. It may present with symptoms such as abdominal bloating, pelvic pain, and indigestion. It is usually diagnosed at an advanced stage.
Leukemia It is a type of cancer that affects blood cells. It has acute and chronic forms. It presents with symptoms such as fatigue, frequent infections, and easy bruising.
Lymphoma It is a cancer of the lymphatic system. There are Hodgkin and non-Hodgkin types. Painless swelling may occur in the neck, armpit, or groin.
Pancreatic Cancer It may not show symptoms in the early stage. It may present with jaundice, abdominal pain, and weight loss. It usually progresses rapidly.
Brain Tumors They may be benign or malignant. They may present with symptoms such as headache, visual disturbances, seizures, and balance problems.
Bladder Cancer Symptoms such as blood in the urine, burning during urination, and frequent urination may be observed. Smoking is an important risk factor.
Thyroid Cancer It may present with symptoms such as a mass in the neck, hoarseness, and difficulty swallowing. It usually has a slow course.
Bone Cancer It may be primary or metastatic. It may present with pain in the bones, swelling, and an increased risk of fractures.
Testicular Cancer It is more common in young men. A painless swelling in the testicle is the most common symptom. The chance of treatment is high with early diagnosis.
Uterine (Endometrium) Cancer Postmenopausal vaginal bleeding is the most common symptom. It has a high probability of being diagnosed in the early stage.
Oral and Throat Cancers Smoking, alcohol, and HPV infection are risk factors. Symptoms such as sores in the mouth, hoarseness, and difficulty swallowing may occur.
Esophageal (Food Pipe) Cancer Difficulty swallowing, weight loss, and chest pain are among the symptoms. Smoking and alcohol use are among the risk factors.

How Are the Types of Cancer in Our Body Biologically Classified?

The type of tissue from which cancers originate not only determines the general name of the disease but also shapes its biological behavior and response to treatment. Since the human body consists of many different tissue types, the cellular characteristics of malignant tumors arising from each of these tissues are completely different from one another. Knowing the origin of a tumor is of great importance in predicting how it will progress in the body and whether it will spread to lymph nodes or distant organs through the bloodstream.

The main groups classified according to cell origin in medical literature are as follows:

  • Carcinomas
  • Sarcomas
  • Leukemias
  • Lymphomas
  • Central nervous system tumors

Carcinomas are cancers that originate from epithelial tissues covering the inner and outer surfaces of the body and are by far the most common group in humans. The majority of cancers in organs such as the lungs, breast, prostate, stomach, and colon fall into this group. They are also divided into subgroups depending on whether they originate from secretory cells or covering cells.

Sarcomas, on the other hand, are tumors originating from the connective and supportive tissues of the body such as muscle, cartilage, bone, fat tissue, and blood vessels. They are much rarer compared to carcinomas but tend to grow rapidly and may spread to organs such as the lungs through the bloodstream. In the management of such tumors, the guidance of imaging technologies and the precise determination of tissue boundaries are of vital importance.

Leukemias arise from the uncontrolled proliferation of blood-producing cells in the bone marrow. Their biggest difference from other groups is that they usually do not form a solid mass, that is, a tumor. Instead, there is a massive increase in the number of abnormal and dysfunctional white blood cells in the blood. Lymphomas are malignant tumors of lymphocytes, which are the building blocks of the immune system, and usually present with enlargement of lymph nodes. Central nervous system tumors originate from the cells of the brain and spinal cord.

When a tumor spreads to another part of the body, that is, when it metastasizes, it continues to carry the name and cellular identity of the place where it first originated. For example, when a cancer that starts in the lungs spreads to the liver, this new mass in the liver is not a liver cancer. This mass is called “metastatic lung cancer.” Because when examined under a microscope, the cells inside are seen to belong to lung tissue. Treatment planning is always based on this original origin and is planned according to the biological structure of the place where it first appeared.

What Are the Most Common Types of Cancer in Turkey and in the World?

The lifestyles of societies, their dietary habits, genetic heritage, and the extent to which they are exposed to environmental factors directly determine which types of tumors will be more common. When health statistics are examined, it is clearly seen that gender, age, and even the geographical region lived in create very distinct differences in the distribution of hundreds of thousands of newly diagnosed cases. The incidence of cancer in men is generally higher compared to women. In addition to genetic factors, this is based on habits such as occupational exposure to chemicals and long-term tobacco use.

The most commonly diagnosed types in men in our society are:

  • Lung cancer
  • Prostate cancer
  • Colorectal cancer
  • Bladder cancer
  • Stomach cancer

In women, the ranking is generally as follows:

  • Breast cancer
  • Thyroid cancer
  • Colorectal cancer
  • Uterine cancer
  • Ovarian cancer

The fact that lung cancer ranks first in men is directly related to the prevalence of tobacco and tobacco product use. Prostate cancer, on the other hand, usually occurs with advanced age and can be detected at an early stage with regular screenings. Breast cancer is by far the most common type in women and, thanks to the widespread use of screening programs such as mammography, it can be detected at very early stages and result in complete recovery.

Regional variables also affect the picture. For example, stomach and esophageal cancers are more common in regions where smoked, heavily salted foods are consumed or where barbecue culture is widespread. In contrast, in large cities where Western-style diets are adopted, low in fiber and high in processed meat products and refined carbohydrates, there is a significant increase in colorectal cancer rates.

How Are Needle Biopsies That Provide Definitive Diagnosis for Cancer Types Performed?

It is not medically possible to start treatment without establishing a “definitive diagnosis” for any disease. Advanced tomography, ultrasound, or magnetic resonance devices can perfectly show the presence, size, and relationship of a suspicious mass anywhere in the body with surrounding tissues. However, these devices cannot say with 100% certainty whether that mass is benign or malignant. Even if it is malignant, to understand which cell type it originates from, a physical sample must be taken from that tissue and examined under a microscope in a pathology laboratory. While open surgical operations and large incisions were required to obtain this sample in the past, today the process has become much more comfortable with minimally invasive techniques applied by interventional radiology specialists.

The main types of biopsy performed under imaging guidance are as follows:

  • Thyroid biopsy
  • Breast biopsy
  • Lung biopsy
  • Liver biopsy
  • Bone biopsy
  • Lymph node biopsy

Before the procedure, there is no need for the patient to be put completely to sleep with general anesthesia. Only the skin area where the needle will enter is numbed with local anesthetic drugs, so the patient does not feel any pain during the procedure. When taking samples from masses in organs close to the surface such as the thyroid or breast, high-resolution ultrasound devices are usually used. The tip of the needle is followed in real time on the ultrasound screen and a tissue sample is taken by reaching the exact center of the suspicious area.

For deeper structures such as the lungs, liver, or bones, computed tomography guidance is preferred. The safest route that will not damage vessels, nerves, or surrounding organs is calculated based on tomography sections. With specially designed thin biopsy needles, a sufficient tissue sample is removed from the body in just a few minutes. After the procedure, only a small needle mark remains on the skin, and there is no need for sutures. After a few hours of rest, patients can return home and their daily lives on foot. Thanks to this method, risks such as infection, bleeding, and long recovery times associated with major surgeries are completely eliminated.

Which Intravascular Treatments Are Applied for Cancer Types in the Liver?

Liver cancers, whether they originate directly from the liver’s own epithelial cells or spread to the liver from other organs such as the stomach, colon, pancreas, or breast through the bloodstream, are conditions that require great care and technological infrastructure in their treatment. The liver has a unique anatomy in terms of blood circulation in the human body. Healthy liver tissue receives about eighty percent of the blood it needs from a large vein called the portal vein coming from the intestines. However, tumors growing in the liver follow a very different path; they use only the artery called the hepatic artery to nourish themselves and grow rapidly. This different feeding habit of tumors has given the medical world the opportunity to directly target those tumors.

The intravascular techniques used in a targeted manner in this region are as follows:

  • Transarterial chemoembolization
  • Transarterial radioembolization
  • Chemoinfusion
  • Embolization

In the transarterial chemoembolization method, entry is made through the patient’s groin or wrist artery with millimeter-thick flexible tubes, just like in heart angiography. These thin tubes are advanced through the main vessels to the artery of the liver, and from there to much smaller capillaries that directly feed the tumor. Once the target is reached, a highly concentrated dose of chemotherapy drug is injected that will affect only that tumor. Immediately afterward, micro-particles that block the vessels are given to prevent the drug from escaping to other parts of the body and to cut off the tumor’s blood supply. The tumor is exposed to an intense drug from within and is deprived of oxygen as its nutrient source is cut off. Since the drug is trapped only inside the tumor, classical side effects such as hair loss or severe nausea are not seen in the patient.

In transarterial radioembolization, radiation power is used instead of chemical drugs. Microscopic spheres coated with radioactive substances are injected into the vessels feeding the tumor through a catheter. These spheres permanently settle in the capillary network inside the tumor and emit targeted radiation from the inside out for months, covering only the tumor area. While healthy tissues are protected from this radiation, the mass is subjected to a kind of nuclear bombardment from within. Thanks to these methods, tumors that are too large or located in risky areas to be operated on can be controlled.

Which Ablation and Freezing Methods Are Used for Cancer Types That Can Be Treated Without Surgery?

In the oncological treatment process, it may not always be possible to remove the patient’s mass from the body with open surgical methods. Situations such as advanced age, chronic heart or lung diseases, or the tumor being very close to the heart or major vessels can make surgical operations life-threatening. Sometimes, even if the patient is suitable for surgery, alternatives that cause less damage are sought in order to prevent the removal of the entire organ and preserve organ functions. At this point, ablation technologies that destroy the tumor at the cellular level in its location without removing it come into play.

Energy-based technologies that directly target and destroy tumors are as follows:

  • Radiofrequency ablation
  • Microwave ablation
  • Cryoablation
  • Irreversible electroporation
  • Laser ablation

Ablation procedures are performed through a small needle hole on the skin, only a few millimeters in diameter. Under the real-time image guidance of high-tech devices such as tomography or ultrasound, a special energy-transmitting needle is placed directly into the center of the tumor. In radiofrequency ablation, a high-frequency electric current is delivered to the tissue through the tip of the needle. This current vibrates ions in the tissue, creating very high frictional heat and burns cancer cells within seconds, carbonizing them. Microwave ablation works with the logic of microwave ovens used in our homes; it rapidly vibrates water molecules within the tumor using electromagnetic waves. This method is especially preferred for large masses in the lungs and liver because it can reach higher temperatures more quickly.

In cryoablation, which is the exact opposite of heating, the tumor is destroyed by freezing. Thanks to argon and helium gases passed through special needles, a massive ice ball reaching minus eighty degrees is created at the tip of the needle. The water inside cancer cells rapidly turns into ice crystals, breaking the cell membrane and rendering the mass completely lifeless. Since the freezing process has a natural anesthetic and pain-relieving effect, the patient’s recovery process is extremely comfortable. It offers very high success rates, especially for masses in the kidney region. Irreversible electroporation technology, on the other hand, creates permanent microscopic holes in cell membranes using high-voltage electrical pulses without using heat, causing the cell to undergo apoptosis; thus, it can be safely applied in tumors in organs such as the pancreas that are attached to vessels without damaging surrounding tissues. In small tumors detected at an early stage, the success rate of these needle-based ablation procedures in providing permanent cure is equivalent to major surgeries.

What Are the Supportive Procedures That Improve the Patient’s Quality of Life While Treating Different Types of Cancer?

The disease process is a long, exhausting, and physically and emotionally demanding journey that requires serious patience. In this journey, the main goal of medicine is not only to eliminate the disease but also to provide a quality of life in which the person can eat comfortably without pain, is protected from infections, and does not completely disconnect from social life during treatment. The mechanical pressure exerted by masses growing in the body on surrounding organs and the side effects caused by heavy drug treatments can be largely alleviated with palliative, that is, relieving procedures performed under advanced imaging guidance.

The procedures performed to maintain the patient’s quality of life during the treatment process are as follows:

  • Port catheter placement
  • Biliary drainage
  • Percutaneous nephrostomy
  • Metallic stent applications
  • Feeding tube placement

During long chemotherapy periods, constantly inserting needles into the thin and delicate veins in the patient’s arms causes serious physical pain and eventually leads to those veins hardening and becoming unusable. To prevent this suffering, a smart device the size of a coin called a port catheter is placed under the skin, usually in the chest area just below the collarbone. Thanks to this system, which is connected to a large vein leading to the heart with a thin silicone tube, all blood draws and drug administrations that will last for months or even years are performed completely painlessly without puncturing the patient’s arms. The port system is not visible from the outside, and the patient can comfortably continue activities such as bathing and swimming in daily life.

Vital interventions are also performed in cases of blockage of channels within the body. When tumors around the liver or pancreas block the bile ducts, it causes yellowing of the eyes, severe itching, and liver toxicity. By entering these blocked channels with a thin needle under imaging guidance, biliary drainage catheters or permanent expanding stents are placed, allowing the accumulated bile fluid to flow back into the intestines. Similarly, in masses originating from the uterus or prostate that block the urinary tract, percutaneous nephrostomy tubes are inserted through the back to prevent the kidney from swelling and failing. For masses that completely block passage in the esophagus or large intestine, flexible stents that are placed with closed methods and open like an umbrella inside make it possible for the patient to feed normally and perform excretion again.

What Pain-Relieving and Stabilizing Procedures Are Performed for Cancer Types That Spread to the Bones?

Diseases that start in organs such as the lungs, breast, prostate, and thyroid tend to spread to the bones, which are the support system of the body, via blood or lymph in advanced stages. This condition especially targets the spine, pelvis, and long arm and leg bones. Malignant cells that settle in the bone weaken the solid calcium structure in that area by destroying it like moths. While this destruction process causes extremely severe and unbearable bone pain in the patient, it also creates a risk of the spine suddenly collapsing and fracturing even with the slightest movement or coughing due to the weakening of the bone structure.

The minimally invasive stabilization procedures applied for bone metastases are as follows:

  • Vertebroplasty
  • Kyphoplasty
  • Tumor ablation
  • Percutaneous screw fixation

Vertebroplasty and kyphoplasty procedures are successfully applied to quickly relieve these unbearable bone pains and support the spine from the inside, which is at risk of collapse. Using only local anesthesia and under the real-time guidance of advanced X-ray devices, the diseased vertebra is reached directly with a special needle from the patient’s back. A special medical cement in liquid form is injected into the center of the bone. This cement reacts in a short time and hardens like concrete inside the bone. The high heat released during hardening destroys tumor cells and sensitive nerve endings causing pain in that area. Since the weakened bone is perfectly supported from the inside, the severe pain experienced by the patient usually disappears almost miraculously within a few hours after the procedure.

If there is already a collapse and height loss in the vertebra due to the destruction caused by the tumor, a small balloon is placed in that area with a method called kyphoplasty before the cement procedure. The balloon is carefully inflated to restore the collapsed vertebra to its original height, and this safe cavity created is filled with cement to restore the spine to its normal anatomy.

Frequently Asked Questions

Cancer is commonly classified by the tissue or cell type from which it originates. Major categories include carcinoma, sarcoma, leukemia, lymphoma, multiple myeloma, melanoma, and cancers of the brain and nervous system.

Carcinoma develops from epithelial cells that line organs and body surfaces. It accounts for most cancer diagnoses and includes common cancers such as breast, lung, prostate, colorectal, and skin cancers.

Sarcoma arises from connective tissues such as bone, muscle, fat, cartilage, blood vessels, and tendons. These cancers are relatively rare and often require specialized diagnostic and treatment approaches.

Leukemia affects blood-forming tissues and causes abnormal blood cell production, while lymphoma originates in the lymphatic system. Both cancers can impact immune function and spread throughout the body.

Melanoma develops from pigment-producing cells called melanocytes. Although less common than other skin cancers, it has a higher likelihood of spreading to distant organs if not detected and treated early.

Breast cancer is common among women, while prostate cancer is frequently diagnosed in men. Lung, colorectal, skin, thyroid, and blood cancers can affect both sexes and occur across different age groups.

Yes, cancers are often named after the organ of origin, such as lung cancer, breast cancer, liver cancer, pancreatic cancer, thyroid cancer, or kidney cancer, regardless of where they later spread.

Many cancers can metastasize, but the risk varies by type and stage. Aggressive cancers such as pancreatic, lung, melanoma, and certain high-grade tumors may spread more readily without treatment.

Diagnosis usually involves imaging studies, laboratory tests, and biopsy. Microscopic examination and specialized molecular testing help identify the exact cancer type and guide personalized treatment planning.

Different cancers respond to different therapies. Accurate classification helps doctors choose the most effective treatment options, estimate prognosis, evaluate risk factors, and develop an individualized care plan.

Updated Date: 13/10/2026

Vaka Örnekleri

Leave a Reply

Your email address will not be published. Required fields are marked *

Call Now Button