Stomach Cancer

Types

There are several types of stomach cancer, each with unique characteristics and implications for treatment. In this article, we’ll break down the details of these types in simple terms to help you understand them better. Whether you’re a patient, a caregiver, or just seeking information, this guide will provide you with easily digestible insights into stomach cancer types.

1. Adenocarcinoma: The Most Common Type

Adenocarcinoma is the most prevalent type of stomach cancer. It originates in the cells that produce mucus and other fluids in the stomach lining. This type often develops slowly over time and is commonly linked to lifestyle factors like smoking, a diet high in salty and smoked foods, and chronic? stomach infection?, or irritation, often causing pain?, swelling?, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation?. Adenocarcinoma can be further categorized into two subtypes: intestinal and diffuse.

• Intestinal Adenocarcinoma: This subtype typically forms in areas with chronic? infection?, or irritation, often causing pain?, swelling?, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation? or stomach ulcers. It tends to grow slower and is often associated with the presence of H. pylori bacteria. Patients with this subtype may experience symptoms such as indigestion, stomach pain, and unintentional weight loss?.
• Diffuse Adenocarcinoma: Unlike intestinal adenocarcinoma, this subtype doesn’t have a well-defined pattern of growth. It infiltrates the stomach wall more diffusely and is associated with a poorer prognosis?. Diffuse adenocarcinoma can affect younger individuals and tends to spread more rapidly.

2. Gastrointestinal Stromal Tumors (GISTs): A Rare Entity

GISTs are a type of stomach cancer that originates in the cells of the gastrointestinal tract. While these tumors can develop anywhere along the GI tract, they’re sometimes found in the stomach. GISTs are caused by genetic mutations and are often treated with targeted therapies that aim to block the activity of these mutations.

3. Lymphomas: Uncommon but Important

Lymphomas are cancers that start in the lymphatic system, which is part of the immune system. While stomach lymphomas are rare, they do occur. These cancers can affect the stomach wall and may cause symptoms such as abdominal pain?, nausea?, and vomiting?. Lymphomas require specific treatment approaches, often including chemotherapy and radiation.

4. Carcinoid Tumors: A Slow-growing Alternative

Carcinoid tumors are a type of neuroendocrine tumor that can develop in the stomach. These tumors are usually slow-growing and might not cause noticeable symptoms in the early stages. However, as they grow, they can lead to symptoms like stomach pain?, diarrhea?, and hormonal imbalances. Surgical removal is a common treatment option for carcinoid tumors.

5. Squamous Cell Carcinoma: Uncommon in the Stomach

Squamous cell carcinoma is more commonly associated with other parts of the body, such as the skin and respiratory tract. However, it can rarely occur in the stomach lining. This type of cancer originates in the flat cells that line certain organs and surfaces. Treatment often involves a combination of surgery, chemotherapy, and radiation therapy.

6. Signet Ring Cell Carcinoma: Distinctive Appearance

Signet ring cell carcinoma is a subtype of adenocarcinoma characterized by its unique appearance under the microscope. The cancer cells look like signet rings when viewed under a microscope due to the presence of mucin. This type of cancer can be aggressive and is associated with a higher risk of spreading to other parts of the body.

7. Undifferentiated Carcinoma: Less Defined

Undifferentiated carcinoma, also known as anaplastic carcinoma, is a less common and more aggressive type of stomach cancer. It’s called “undifferentiated” because the cancer cells don’t resemble normal stomach cells when examined under a microscope. This type of cancer tends to grow rapidly and is often diagnosed at an advanced stage.

8. Small cell carcinoma, and leiomyosarcoma

These are rarer forms of stomach cancer, not commonly found. While less common, understanding these rare types can help in ensuring comprehensive care. Think of these as rare breeds of stomach cancer. They look different from other cancers when doctors zoom in to see them. Both Small Cell Carcinoma and Squamous Cell Carcinoma offer unique microscopic appearances, making them distinct yet rare stomach cancer varieties.

Causes

Possible causes of stomach cancer in simple terms to help you grasp the key concepts easily.

1. Helicobacter pylori Infection?: One of the main causes of stomach cancer is an infection? with a bacterium called Helicobacter pylori. This bug can damage the stomach’s protective lining over time, increasing the risk of cancer.
2. Age: The risk of stomach cancer tends to rise as people get older. That’s why regular health check-ups become more important as we age.
3. Diet High in Salted, Smoked, or Pickled Foods: Consuming too many salty, smoked, or pickled foods can irritate the stomach lining and potentially lead to cancerous changes.
4. Tobacco Use: Smoking can harm the stomach and increase the chances of developing cancer there. Kicking the smoking habit can significantly lower this risk.
5. Obesity: Carrying excess weight can contribute to infection?, or irritation, often causing pain?, swelling?, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation? in the body, which might play a role in the development of stomach cancer.
6. Family History: If you have close relatives who have had stomach cancer, your own risk may be higher.
7. Type A Blood: Studies suggest that individuals with type A blood might be more susceptible to stomach cancer. While you can’t change your blood type, being aware of this risk factor is still valuable.
8. Epstein-Barr Virus Infection?: This virus is linked to some stomach cancers, especially in individuals with weakened immune systems.
9. Pernicious Anemia?: When your body can’t absorb vitamin B12 properly, it can lead to a condition called pernicious anemia?, which in turn increases stomach cancer risk.
10. Previous Stomach Surgeries: If you’ve had certain stomach surgeries, your risk of stomach cancer might be slightly elevated.
11. Gender: Stomach cancer is more common in men than in women. Regular screenings can help catch any potential issues early.
12. Type B Blood: Just like with type A blood, having type B blood might also be associated with a higher risk of stomach cancer.
13. Certain Occupational Exposures: Some jobs, such as coal mining, metal working, and rubber manufacturing, might expose individuals to cancer-causing substances.
14. Gastritis?: Chronic? infection?, or irritation, often causing pain?, swelling?, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।" data-rx-term="inflammation" data-rx-definition="Inflammation is the body’s response to injury, infection, or irritation, often causing pain, swelling, heat, or redness. সহজ বাংলা: শরীরের প্রদাহ; ব্যথা, ফোলা বা লালভাব হতে পারে।">inflammation? of the stomach lining, known as gastritis?, can increase the risk of stomach cancer.
15. Type O Blood: People with type O blood seem to have a lower risk of stomach cancer compared to those with types A or B.
16. Diet Low in Fruits and Vegetables: A diet lacking in fresh fruits and vegetables may deprive the body of important nutrients that help protect against cancer.
17. Certain Genetic Mutations: Inherited gene mutations can sometimes increase the likelihood of developing stomach cancer.
18. Excessive Alcohol Consumption: Heavy alcohol consumption can damage the stomach lining, potentially paving the way for cancer to develop.
19. Lynch Syndrome: People with Lynch syndrome have a higher risk of stomach cancer, along with other cancers. Genetic counseling can help those at risk.
20. Environmental Factors: Exposure to certain chemicals and pollutants in the environment might contribute to stomach cancer risk.
21. EBV-associated Gastric Cancer: Epstein-Barr virus (EBV) is not only linked to some stomach cancers but also lymphomas.
22. Smoked Foods: Cooking foods at high temperatures or over open flames can create chemicals that might increase the risk of stomach cancer.
23. Low Consumption of Selenium: Selenium, a mineral found in certain foods, plays a role in protecting cells from damage. A diet lacking in selenium might heighten cancer risk.
24. Radiation Exposure: High doses of radiation, such as those used in certain medical treatments, can raise the risk of stomach cancer.
25. Chronic? Gastric Ulcers: Long-lasting stomach ulcers that don’t heal can potentially evolve into cancer.
26. Hereditary Diffuse Gastric Cancer: This rare genetic condition can greatly increase the risk of stomach cancer at a young age.
27. Peritoneal Tuberculosis: Chronic? infections in the abdomen, like peritoneal tuberculosis, could raise the risk of stomach cancer.
28. Exposure to Asbestos: Asbestos exposure, often linked to lung cancer, might also play a role in stomach cancer development.
29. Lack of Physical Activity: Not getting enough exercise is associated with various health risks, including a higher likelihood of stomach cancer.
30. Stomach Polyps: While most polyps are benign, some can become cancerous over time.

Symptoms

It’s important to remember that these symptoms might also be caused by other health conditions. If you or someone you know is experiencing these signs, seek medical advice. Here’s a simplified list of symptoms of stomach cancer, explained for everyone to understand.

1. Poor Appetite
   • What it means: You just don’t feel like eating, even if you used to love food.
2. Weight Loss Without Trying
   • What it means: You’re losing weight without dieting or exercising.
3. Stomach Pain
   • What it means: A discomfort or pain in the area around your belly button or above it.
4. Feeling Full Quickly
   • What it means: Even if you eat a small amount, your stomach feels full.
5. Heartburn or Indigestion
   • What it means: A burning sensation in your chest or an upset stomach after eating.
6. Nausea
   • What it means: You feel like you might throw up.
7. Vomiting, Possibly with Blood
   • What it means: Throwing up, and sometimes the vomit might look like coffee grounds or have a red or dark color.
8. Swelling or Fluid Build-up in the Stomach
   • What it means: Your stomach feels bloated or puffed out.
9. Difficulty Swallowing
   • What it means: Food feels like it’s stuck in your throat when you try to eat.
10. Blood in Stool
    • What it means: The toilet water might turn red, or your stool could look dark and sticky.
11. Feeling Weak or Tired
    • What it means: Even if you rest, you still feel drained or low on energy.
12. Pale or Yellowish Skin
    • What it means: Your skin looks paler than usual, or you might notice a yellow tint.
13. Heartburn that doesn’t go away
    • What it means: Persistent burning in the chest, especially after eating.
14. Stomach Bloating After Meals
    • What it means: Your stomach puffs up after you eat, making you feel uncomfortable.
15. Diarrhea or Constipation
    • What it means: Going to the bathroom either too often or not often enough.
16. Belching
    • What it means: Burping more than usual.
17. Anemia
    • What it means: A condition where you don’t have enough healthy red blood cells, making you feel tired and weak.
18. Difficulty Breathing
    • What it means: You get out of breath easily, even if you’re not doing much.
19. A lump in your stomach
    • What it means: You can feel a bump or mass in your stomach area when you touch it.
20. Excessive Fatigue
    • What it means: You’re always feeling super tired, even if you haven’t done anything exhausting.

Diagnosis

Common diagnosis and test options for stomach cancer. By breaking down complex medical jargon into simple terms

1. Physical Examination: During a physical exam, your doctor will palpate your abdomen and check for any unusual lumps or masses. This helps identify potential signs of stomach cancer.
2. Medical History Review: Your doctor will discuss your medical history, including your family history of cancer, to understand your risk factors and guide further tests.
3. Blood Tests: Blood tests, including complete blood count (CBC) and tumor marker tests, can provide important information about your overall health and potential cancer markers.
4. Endoscopy: An endoscope is a thin tube with a camera that is inserted through your mouth or nose to examine the inside of your stomach for abnormalities.
5. Biopsy: During an endoscopy, your doctor may take a small tissue sample (biopsy) for analysis. This helps determine if cancer cells are present.
6. Upper GI Series: Also known as a barium swallow, this X-ray procedure involves drinking a contrast material that helps highlight your stomach on X-ray images.
7. CT Scan: A computed tomography (CT) scan creates detailed cross-sectional images of your abdomen, aiding in detecting tumors and their size.
8. MRI: Magnetic resonance imaging (MRI) uses powerful magnets and radio waves to create detailed images, helping to further assess the extent of cancer.
9. PET Scan: Positron emission tomography (PET) scans use a radioactive tracer to highlight areas of potential cancer activity in the body.
10. Ultrasound: Ultrasound uses sound waves to create images of your stomach and nearby organs, assisting in identifying abnormalities.
11. Laparoscopy: In this minimally invasive procedure, a tiny camera is inserted through small incisions to visualize the abdominal cavity and collect tissue samples.
12. Genetic Testing: Genetic tests can identify inherited gene mutations that may increase your risk of stomach cancer.
13. Stool Tests: Stool samples can be analyzed for blood or other markers that may indicate the presence of stomach cancer.
14. Gastrointestinal Series: This series of X-rays, including a barium enema and upper GI series, helps visualize the entire gastrointestinal tract.
15. Cytology: Cells collected from fluids or tissues are examined under a microscope to detect cancerous changes.
16. Lymph Node Biopsy: If cancer has spread, a biopsy of nearby lymph nodes can help determine the extent of the disease.
17. Serum Gastrin Test: This blood test measures the level of gastrin, a hormone that can be elevated in certain types of stomach cancer.
18. Immunohistochemistry: This test uses antibodies to detect specific proteins in cancer cells, aiding in diagnosis and classification.
19. Molecular Testing: Molecular tests analyze DNA, RNA, and other molecules to identify specific genetic changes in cancer cells.
20. Capsule Endoscopy: A small capsule with a camera is swallowed, capturing images of the digestive tract to identify abnormalities.
21. Virtual Endoscopy: Using CT or MRI scans, this technique creates 3D images of the digestive tract without invasive procedures.
22. Angiography: X-ray images of blood vessels can help determine the blood supply to tumors, aiding treatment planning.
23. Abdominal Lavage: Fluid from the abdomen is tested for cancer cells, particularly in advanced cases.
24. Peritoneoscopy: Similar to laparoscopy, this procedure examines the abdominal cavity for signs of cancer spread.
25. Thoracoscopy: If cancer has spread to the lining of the lungs, this procedure examines the area for signs of involvement.
26. X-ray: Conventional X-rays can reveal tumors, ulcers, or other abnormalities in the stomach area.
27. Nuclear Medicine Scan: A small amount of radioactive material is injected to create images highlighting specific areas of concern.
28. Bone Scan: If cancer has spread, a bone scan can identify affected areas in the bones.
29. Esophagogastroduodenoscopy (EGD): Similar to endoscopy, this procedure examines the esophagus, stomach, and upper part of the small intestine.
30. Thoracoabdominal CT Scan: This CT scan provides a comprehensive view of the chest and abdomen to detect cancer spread.

Treatment

Effective treatments for stomach cancer, making it easier to understand and find the information you need.

1. Surgery: Surgery involves removing the cancerous part of the stomach. This can help stop cancer from spreading to other parts of the body.

2. Chemotherapy: Chemotherapy uses strong medicines to kill cancer cells. These medicines can be taken by mouth or through a vein.

3. Radiation Therapy: Radiation therapy uses high-energy rays to target and destroy cancer cells. It’s often used before or after surgery.

4. Targeted Therapy: Targeted therapy focuses on specific molecules in cancer cells, blocking their growth and spread.

5. Immunotherapy: Immunotherapy boosts the body’s immune system to fight cancer cells more effectively.

6. Palliative Care: Palliative care focuses on relieving symptoms and improving the quality of life for patients.

7. Minimally Invasive Surgery: This type of surgery uses small incisions and specialized tools, reducing recovery time.

8. Endoscopic Stent Placement: A stent is placed in the esophagus to keep it open, making it easier to eat and drink.

9. Proton Therapy: Similar to radiation, proton therapy targets cancer cells with precise radiation beams.

10. Radiofrequency Ablation: This technique uses heat to destroy cancer cells.

11. Cryoablation: Cryoablation freezes and kills cancer cells.

12. Hyperthermia Therapy: Hyperthermia exposes cancer cells to high temperatures to weaken or destroy them.

13. Angiogenesis Inhibitors: These drugs block the formation of new blood vessels that tumors need to grow.

14. Vaccines: Cancer vaccines stimulate the immune system to attack cancer cells.

15. Chemoradiotherapy: Combining chemotherapy and radiation therapy can enhance their effectiveness.

16. Gastrectomy: A gastrectomy is the removal of part or all of the stomach.

17. Laser Therapy: Laser light is used to shrink or destroy tumors.

18. Photodynamic Therapy: This therapy uses light and special drugs to kill cancer cells.

19. Ablative Techniques: Various techniques like ethanol injection directly into tumors can destroy cancer cells.

20. Supportive Therapies: These therapies help manage symptoms and side effects of cancer treatment.

21. Personalized Medicine: Treatment plans are tailored to a patient’s unique genetic makeup.

22. Second Opinion: Getting another doctor’s perspective can provide valuable treatment insights.

23. Clinical Trials: Joining clinical trials gives access to cutting-edge treatments.

24. Nutritional Support: Maintaining proper nutrition can aid in recovery.

25. Herbal Supplements: Some herbs might have benefits, but consult a doctor before use.

26. Meditation and Yoga: These practices can alleviate stress and promote well-being.

27. Acupuncture: Acupuncture might help manage treatment-related symptoms.

28. Music and Art Therapy: Engaging in these activities can improve mental health during treatment.

29. Massage Therapy: Massage can reduce stress and enhance relaxation.

30. Exercise: Regular physical activity can boost mood and energy levels.

Medications

Just like other diseases, there are different treatments available. Here, we’re diving into 20 drug treatments that help combat this illness. If you or a loved one has stomach cancer, read on to understand your options better.

1. 5-Fluorouracil (5-FU):
   • What is it? A chemotherapy drug.
   • How does it work? It stops cancer cells from multiplying.
2. Capecitabine (Xeloda):
   • What is it? An oral form of chemotherapy.
   • How does it work? Once inside the body, it turns into 5-FU, preventing cancer growth.
3. Cisplatin:
   • What is it? Another chemotherapy drug.
   • How does it work? It damages the DNA of cancer cells, halting their growth.
4. Carboplatin:
   • What is it? Chemotherapy related to cisplatin.
   • How does it work? It disrupts the DNA in cancer cells, making it hard for them to grow and divide.
5. Docetaxel (Taxotere):
   • What is it? A chemotherapy medication.
   • How does it work? It stops the cancer cells from dividing.
6. Paclitaxel (Taxol):
   • What is it? A drug related to docetaxel.
   • How does it work? It keeps cancer cells from growing.
7. Epirubicin (Ellence):
   • What is it? A type of chemotherapy.
   • How does it work? It damages the DNA of the cancer cells, which stops their growth.
8. Oxaliplatin (Eloxatin):
   • What is it? Yet another chemotherapy drug.
   • How does it work? It prevents cancer cells from multiplying.
9. Trastuzumab (Herceptin):
   • What is it? A targeted therapy drug.
   • How does it work? It seeks out cancer cells that have too much of a protein called HER2 and destroys them.
10. Ramucirumab (Cyramza):

• What is it? A targeted drug.
• How does it work? It stops tumors from creating new blood vessels, thus starving them.

11. Imatinib (Gleevec):

• What is it? A drug for cancers with certain mutations.
• How does it work? It targets proteins that make cancer cells grow.

12. Sunitinib (Sutent):

• What is it? A targeted therapy.
• How does it work? It halts cancer cell growth and starves tumors by stopping new blood vessel formation.

13. Everolimus (Afinitor):

• What is it? A targeted drug.
• How does it work? It interferes with a pathway cancer cells use to grow.

14. Pembrolizumab (Keytruda):

• What is it? An immunotherapy drug.
• How does it work? It helps the immune system recognize and fight cancer cells.

15. Nivolumab (Opdivo):

• What is it? Another immunotherapy option.
• How does it work? It boosts the immune system to better fight cancer.

16. Lapatinib (Tykerb):

• What is it? A targeted drug for stomach cancers with too much HER2.
• How does it work? It blocks signals that make cancer cells grow.

17. Irinotecan (Camptosar):

• What is it? A chemotherapy drug.
• How does it work? It prevents DNA in cancer cells from replicating.

18. Mitomycin-C:

• What is it? Another chemotherapy medication.
• How does it work? It crosslinks DNA, preventing cancer cell growth.

19. Regorafenib (Stivarga):

• What is it? A targeted drug.
• How does it work? It slows down or stops cancer cell growth and reduces blood supply to tumors.

20. Avelumab (Bavencio):

• What is it? An immunotherapy.
• How does it work? It helps the body’s immune system detect and attack cancer cells.

In conclusion, stomach cancer has various drug treatments available, from chemotherapy to targeted therapies and immunotherapies. With advancements in medicine, there’s hope for more effective and less toxic treatments in the future. Always keep updated with the latest research and consult with your doctor for the most suitable treatment option. Remember, the best treatment for you is individual and might differ from someone else’s. Stay informed, and stay strong!

Disclaimer: Always seek the advice of a medical professional before trying any treatments. This guide is for general information purposes only.