# Symptoms and Phases of Stomach Cancer
Stomach cancer usually develops gradually and goes through several stages. The symptoms and course depend very much on where in the stomach the tumor is, how fast it grows and whether there are already metastases. Below we describe the main phases and what happens in them.
Early stage (local tumour, without metastases)
At the earliest stage, the tumor is still only in the inner lining of the stomach and there is no spread to lymph nodes or organs. This stage is often discovered by chance, for example when investigating other complaints.
**Symptoms in this phase: **
- often no obvious complaints, or very vague
- slight nausea after eating
- feeling full after small amounts of food
- irregular appetite
- sometimes heartburn or burning in the upper abdomen
These symptoms are so subtle that many people attribute them to normal stomach problems. Because symptoms are absent or mild, early-stage stomach cancer in Western countries is usually only discovered after people have had symptoms for a long time or by chance during examinations.
**Meaning for daily life: **
In this phase, most people are able to continue their normal daily life. Eating can feel difficult, but usually does not cause serious restrictions.
**Figures about this phase: **
The median five-year survival rate for patients with stage I gastric cancer (tumour confined to the inner wall) is internationally estimated at 50— 70%, depending on exact characteristics and treatment. This indicates that early stage responds better to treatment. However, these figures are averages over large groups; individual results depend heavily on cell type, genetic factors and whether someone is suitable for intensive treatment.
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Locally extensive stage (tumor grows deeper into the stomach lining, possibly involving lymph nodes)
The tumor has now grown deeper into the stomach lining and may reach the muscular layer and beyond. Sometimes nearby lymph nodes are already affected, but there are no metastases to other organs yet.
**Symptoms in this phase: **
- more obvious nausea and vomiting, especially after meaty food
- feeling seriously full after eating just a little bit
- stomach pain or upper abdominal pressure
- constipation or, on the contrary, diarrhea
- tiredness and lack of energy
- possible pallor due to slow loss of blood from the tumour (blood in faeces may be visible or hidden)
- weight loss, sometimes significant
- yellowing of the skin and eyes (when tumour closes bile ducts)
**Meaning for daily life: **
Many people are no longer able to eat normally. The stomach feels full quickly, and large meals are impossible. This leads to weight loss and nutritional deficiencies. Many patients feel tired and have little energy for daily work or housekeeping. Some suffer from pain, especially after eating. The fear is now growing that it is serious.
**Figures about this phase: **
For stage II-III (tumour with lymph nodes involved but no metastases), the median five-year survival rate is approximately 20— 40%, depending on the precise extension. This phase responds better to treatment than advanced disease, but worse than the very early stage. Here, too, the following applies: these are population figures from large studies; many different factors determine the individual outcome.
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Advanced local disease (tumor with perforation or severe obstruction)
In this phase, the tumor can be so large and deep that it completely breaks the stomach lining (perforation) or severely blocks the passage of food (obstruction). These are medical emergencies.
**Symptoms in this phase: **
- severe abdominal pain, suddenly or gradually worsening
- vomiting, possibly unable to hold anything in
- complete impossibility of absorbing food
- fever (in case of perforation)
- sudden deterioration of general condition
- possibly jerky symptoms: cold sweats, rapid heart rate, decreased blood pressure
**Meaning for daily life: **
This stage is an acute threat to life. Patients are no longer able to function independently and require urgent medical or surgical intervention. Food intake is impossible without help; infusions are needed.
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Metastatic disease (spread to other organs)
The tumor has spread to organs elsewhere in the body — usually liver, lungs, peritoneum or bones.
**Symptoms in this phase: **
- all symptoms from earlier stages, worsened
- severe and persistent abdominal pain
- swelling or palpable thickening in the abdomen (from fluid or tumor mass)
- shortness of breath (if metastases in the lungs)
- bone pain (with bone metastases)
- yellowing of skin and eyes, distended abdomen (with liver metastases)
- severe fatigue and general weakness (cachexia)
- loss of appetite even looking at food can cause nausea
- sometimes confusion or drowsiness
- more frequent infections due to weakened immune system
**Meaning for daily life: **
This stage has major consequences. Patients are often bedridden or very limited in mobility. Daily self-care becomes difficult to impossible. Pain is a main concern and requires continuous treatment. Nutrition is problematic and many nutrients are not well absorbed. Most people have greatly reduced quality of life and are dependent on family or care.
**Figures about this phase: **
For metastatic gastric cancer, median survival (the point at which half the group is still alive) is approximately 8–12 months, according to recent studies. This varies greatly depending on the specific tumor type, how well kidney function remains, whether chemotherapy is given, and many other factors. These numbers say nothing about one individual; some live longer, others shorter. The availability of new treatments (immunotherapy, targeted agents) also changes this picture, but does not give the same outcome for everyone.
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When to contact the healthcare provider
Patients with diagnosed gastric cancer should contact their healthcare provider immediately if:
- **sudden, severe abdominal pain**: may indicate perforation or bleeding
- **vomiting with blood** or black vomit (sign of internal bleeding)
- **complete inability to take anything in**, not even drinking
- **high fever** (above 38.5°C) with abdominal pain
- **severe shortness of breath** or chest pain
- **severe pain that is not managed** with over-the-counter medications
- **severe weakness** or confusion
- **leg swelling** or pain in one leg (may indicate blood clot)
These alarm symptoms do not necessarily mean irreversible deterioration, but always require emergency medical evaluation.
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_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._