Key points
- Stomach cancer develops from the cells of the mucous membrane and for a long time does not produce noticeable symptoms.
- The key diagnostic method is endoscopy of the stomach with a biopsy of the changed area.
- The main specialist is an oncologist; at the examination stage a gastroenterologist is also involved.
- Vomiting with blood, black stools and severe weakness require an immediate call for an ambulance.
- The risk is increased by Helicobacter pylori infection, smoking, alcohol and salty food.
What is stomach cancer
Stomach cancer is a malignant tumour that grows from the cells of the inner lining of the stomach. Below we will look at what happens in the body, which circumstances increase the risk and who is more likely to develop the disease.
What happens in the body
The inner lining of the stomach is constantly renewed: old cells are replaced by new ones, and this process follows a certain order. In stomach cancer this order is disrupted: the cells of the mucosa begin to divide uncontrollably because of accumulated changes in the genetic material. Gradually a tumour forms from them, which grows along the wall of the organ and over time grows into deeper layers. For a long time such growth may not cause noticeable symptoms, so the person feels normal and does not seek help. When the tumour becomes larger, it can disrupt the function of the stomach and spread beyond it. That is why the disease is often detected at a stage when active treatment is already required. Regular follow-up with a doctor in cases of chronic changes in the mucosa helps to spot the problem earlier.
What causes it to develop
- Helicobacter pylori infection: this bacterium lives in the stomach mucosa and maintains long-term inflammation, which over time changes its cells.
- Chronic gastritis with atrophy: in this condition the mucosa becomes thinner and loses some of its working cells, which creates the ground for further changes.
- Smoking and alcohol abuse: these habits irritate the lining of the stomach and increase the risk, while giving them up reduces the burden on the organ.
- An excess of salty, smoked and pickled food: such food constantly affects the mucosa and, when consumed frequently, increases the likelihood of unfavourable changes.
- Hereditary predisposition: if close relatives have had this disease, the person's risk is higher, and this should be reported to the doctor.
- Older age: over the years changes in cells accumulate, so the disease is noticeably more common in older people.
Who is affected more often
Most often the disease is detected in older people, in whom changes in the mucosa have accumulated over many years. Men are affected somewhat more often than women, which is linked to differences in lifestyle and habits. Diet plays a noticeable role: constant consumption of salty, smoked and pickled food increases the burden on the stomach lining. Smoking, alcohol abuse and long-standing Helicobacter pylori infection also contribute. If close relatives have had this disease, the person's risk is also higher, and this is taken into account during follow-up. In regions where these habits are more widespread, more cases are recorded. Therefore, when several factors are combined, it is worth discussing with a doctor how often an examination should be carried out.
What symptoms occur?
Stomach cancer in its early stages is often asymptomatic, and the complaints that do appear are easily mistaken for fatigue or indigestion. This section helps you work out which signs require a routine visit to a doctor and which require immediate help.
How it is noticed at the very beginning
Stomach cancer in the early stages of its development often causes no sensations at all, so a person feels healthy. When the tumour begins to grow, non-specific complaints appear that are easily put down to overwork, dietary slips or gastritis. Constant or intermittent pain in the upper abdomen is perceived as ordinary indigestion after a heavy lunch. A feeling of rapid fullness and heaviness after eating makes you think the portion was too large. Nausea, belching and an unpleasant taste in the mouth are attributed to fatigue or accidental food poisoning. Loss of appetite and effortless weight loss are often explained by stress or a change in lifestyle. Weakness, pallor and rapid tiredness seem to be the result of lack of sleep or a shortage of vitamins. If such sensations last longer than usual, it is sensible not to wait for them to pass on their own, but to discuss them with a gastroenterologist or an oncologist.
Signs that occur most often
- Pain in the upper abdomen: constant or intermittent, it is often perceived as the result of ordinary overeating or indigestion.
- Rapid fullness and heaviness: a feeling of being full comes after a small portion, which noticeably changes a person's usual eating pattern.
- Nausea and belching: an unpleasant taste in the mouth and discomfort after eating are often put down to accidental food poisoning or fatigue.
- Loss of appetite and weight loss: body weight decreases without effort or diets, and interest in food noticeably falls for no apparent reason.
- Weakness and pallor: rapid tiredness and pale skin appear gradually and are not explained by exertion or lack of sleep.
- Black stool or vomiting blood: such a sign requires immediate medical help, not waiting.
When to seek help urgently
Examinations and tests
Examination for suspected stomach cancer is structured step by step: from interview and physical examination to instrumental and laboratory methods. Below is an analysis of which investigations are used, what each of them shows and which documents to bring to the appointment.
How the examination begins
Diagnosis begins with history-taking and examination: the doctor clarifies the complaints, when they appeared and how they changed over time. Then he or she orders instrumental and laboratory investigations to assess the condition of the gastric mucosa and the functioning of the body as a whole. Endoscopy of the stomach remains the key method: during it the mucosa is examined from the inside and altered areas are noticed. If such an area is found, a biopsy is taken — a piece of tissue for microscopy, and it is this that allows the diagnosis to be confirmed. In addition, computed tomography is performed to understand how far the process has spread beyond the stomach. Blood tests look for signs of anaemia, which often accompanies the disease and influences further management. The doctor compares the results of these investigations with one another rather than assessing them separately. Therefore it makes sense to keep all discharge summaries and reports: they will help the doctor see the whole picture and avoid prescribing unnecessary procedures.
What is ordered and what it shows
What is worth preparing for the appointment
- Discharge summaries: all available doctors' reports and results of previous visits, so that the specialist sees the history of observation, not only the current condition.
- Endoscopy results: protocols of examination of the gastric mucosa with dates, because comparison with previous descriptions helps to notice changes.
- Biopsy reports: if tissue has already been taken for investigation, bring the texts of the reports, as they directly influence further steps.
- Blood tests: recent and previous results, including the parameters by which the presence of anaemia and the general condition of the body are judged.
- List of observations: briefly write down when the complaints appeared and how they changed, this will save time during history-taking.
- Questions for the doctor: formulate in advance what you want to clarify, so the conversation will be focused and you will not forget anything important.
Which doctor should I see?
The section explains which doctor you are referred to when stomach cancer is suspected and how care is organised. Below — who manages the patient, what treatment consists of and what depends on the regularity of follow-up.
Which specialist manages this condition
The main specialist for stomach cancer is an oncologist, and at the examination stage a gastroenterologist is often involved alongside them. If there is no specialist oncologist nearby, start with a gastroenterologist or a general practitioner at your place of residence: they will assess your complaints and refer you further along the pathway. The treatment strategy is chosen by the oncologist together with other specialists, taking into account the stage, the location of the tumour and the patient's general condition. At the first appointment the doctor clarifies the complaints and medical history, reviews the examinations already carried out and assesses how the person copes with everyday activities. Then they determine whether further examination is needed and discuss possible treatment options with the patient. The aim of this work is to remove the tumour, slow its growth and improve wellbeing. If a report already exists, it is sensible to bring all discharge summaries and scans so as not to undergo the same procedures again.
What treatment consists of
- Surgery: used when the tumour can be removed, and remains the main way to remove it completely.
- Anti-tumour drug therapy: acts on tumour cells when surgery alone is not enough.
- Radiotherapy: used in certain situations when a specific area needs to be treated.
- Follow-up and monitoring after treatment: regular check-ups help to notice changes in time and adjust care.
- Nutritional support and symptom relief: helps to cope with treatment and maintain strength if the person eats poorly or is troubled by pain.
What depends on the patient themselves
The regularity of follow-up is the part of the outcome that largely rests on the person themselves and their loved ones. After treatment it is important to attend the scheduled check-ups, even if you feel well and nothing is troubling you. It is worth telling the doctor about new complaints, changes in appetite, weight and tolerance of activities, without waiting for the planned visit. It is useful to keep records of the dates of appointments and examinations so as not to lose the prescriptions and not to get confused about them. If it is difficult for the person to come on their own, agree in advance on accompaniment and on who will help with the documents. Relatives should know which questions to ask the doctor and write down the answers so as not to mix anything up at home. Calm and consistent adherence to the agreements with the doctor is usually easier to cope with than occasional visits from time to time.
What helps prevent an exacerbation?
Stomach cancer has no specific prevention, but sensible habits and attention to health reduce the risk of exacerbation. Regular monitoring for chronic stomach conditions helps to notice unfavourable changes in time.
What to change in your habits
Giving up smoking and limiting alcohol reduce constant irritation of the stomach lining and lessen the burden on the whole body. Moderation in salty and smoked food matters because such food maintains inflammation and prevents tissues from recovering. A sufficient amount of vegetables and fruit gives cells protection and helps the stomach cope with everyday stress. Treatment of Helicobacter pylori infection is carried out only as prescribed by a doctor; you must not act on your own here. Timely examination for prolonged complaints allows you not to miss the moment when help is needed urgently. If complaints persist longer than usual, you should not explain this away by fatigue or the weather. Discuss with your doctor which changes in diet and habits will be safe specifically for you.
What should be kept under control
- How you feel: note how appetite, weight and sensations after eating change, so as to notice persistent shifts.
- Chronic stomach conditions: with an already known diagnosis, it is important to be monitored by a doctor rather than putting off visits until things get worse.
- Helicobacter pylori infection: its treatment is carried out as prescribed by a doctor, and monitoring afterwards helps to make sure the situation is under control.
- Prolonged complaints: if unpleasant sensations do not go away for weeks, this is a reason to undergo examination rather than wait for it to pass on its own.
- Diet and habits: moderation in salty and smoked food, giving up smoking and limiting alcohol support the stomach every day.
How often to see a doctor
Regular monitoring is needed even when you feel well and nothing is bothering you. With chronic stomach conditions, being monitored by a doctor allows changes to be noticed earlier than they become noticeable. Prolonged complaints that do not go away for weeks are a separate reason to come for an appointment without waiting for things to get worse. The doctor assesses your general condition, takes habits into account and decides whether examination is needed and how often to repeat visits. If new symptoms appear or previous ones intensify, you should not put off the visit. Missed visits lead to help being provided later, when it is harder to cope. Agree with your doctor on a clear monitoring schedule and stick to it, even if everything seems fine.
What is worth remembering
A conversation about stomach cancer is worth concluding with a few takeaways that will help the reader make a balanced decision and not lose time. Below is the main thing worth keeping in mind after becoming familiar with the topic.
Key takeaways
Stomach cancer in its early stages often progresses unnoticed, so how you feel should not be considered a reliable guide. Complaints of persistent indigestion, unusual heaviness after eating or unexplained weight loss are a reason to see a doctor, rather than waiting for everything to pass on its own. Putting off a visit narrows the choice of options, whereas seeking help in good time leaves more possibilities. Examination when stomach cancer is suspected includes a check-up and instrumental methods that show the condition of the mucous membrane. A precise understanding of what is happening helps a person calmly discuss further steps with a doctor. Giving up smoking, paying attention to your diet and monitoring chronic changes in the stomach reduce the likelihood of a severe course. If alarming signs appear, it is more sensible to rely on a specialist's opinion rather than on your own guesses or advice from random sources.
