# Symptoms and stages of sarcomas
Sarcomas do not form a single entity with a standard disease progression. The way a sarcoma develops, which symptoms occur, and how quickly it progresses depend heavily on the type of sarcoma, its location, and the stage at which it is discovered. The description below provides a general overview of how different stages often manifest. It is important to know that there are significant differences between individual patients.
Stage I: Early phase (locally limited tumor)
In this phase, the tumor is still limited to one location in the body and has not spread to lymph nodes or other organs. In many patients, sarcoma is detected in this stage because incidental examination took place or because someone became aware of a physical change.
**Symptoms:**
- A palpable swelling, usually without pain or with only mild pain in the early phase
- Pressure or stretching sensation in the affected body part (for example, in sarcomas of the abdomen, pelvis, or thighs)
- In skin and soft tissue sarcomas: visible thickening or a nodular, irregular mass
- Sometimes: limitations in movement or weakness in the affected body part, depending on where the tumor grows
- Often: no systemic symptoms (such as fever or weight loss) in this phase
**Meaning for daily life:**
Depending on the location, someone may experience that certain movements become more difficult or uncomfortable. For example, a sarcoma in the thigh may hinder walking or climbing stairs. However, the psychological impact of the diagnosis and the subsequent examinations may be greater than the physical complaints themselves in this stage.
**Survival rates in this stage:**
For well-differentiated tumors without spread to lymph nodes or distant metastases, five-year survival across various sarcoma types is on average higher than in later stages. However, because sarcomas are highly heterogeneous (with many different types that behave very differently), reliable average survival rates for "stage I" as a whole cannot be given. The type of sarcoma, the degree of differentiation, and other tumor characteristics strongly determine the prognosis and vary per patient.
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Stage II: Growing local tumor
Here the tumor grows through and becomes larger. Symptoms may increase as more tissue becomes involved.
**Symptoms:**
- Progressive swelling with clear increase in size
- Increasing pain, especially if the tumor grows against nerve fibers or blood vessels
- Reduced mobility and muscle strength in the affected body part
- Possible skin changes above the tumor (redness, warmth, shining)
- In intra-abdominal sarcomas (in the abdominal cavity): abdominal pain, nausea, feeling of fullness after small amounts of food, possible changes in bowel function
- Superficial veins may become more visible
- In rare cases: bleeding or discharge
**Meaning for daily life:**
The growing tumor can become noticeably bothersome. A sarcoma in the leg can make walking painful or impossible; a sarcoma in the abdomen can make meals unpleasant. Many patients feel uncertain and anxious about what lies ahead in this phase. Preparation for treatment (imaging, biopsy, surgery plans) requires emotional and practical energy.
**Survival rates in this stage:**
Here too, the prognosis depends heavily on tumor-specific factors. Without further data, no general survival rates can be given.
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Stage III: Metastatic stage (spread to distant sites)
This is the most advanced stage, in which cancer cells have spread through the blood or lymph to other parts of the body. Most sarcomas spread to the lungs; some to the liver, bones, or other soft tissues.
**Symptoms:**
- All symptoms from stage II may be present
- **Lung-related symptoms** (most common): persistent cough, shortness of breath (especially with exertion), chest pain, possible blood-tinged sputum
- **Bone-related symptoms**: bone pain (can be more severe than pain from the original tumor), fractures from minor trauma
- **Liver metastases**: pain in the upper right abdomen, yellowing of the skin and eyes, fatigue, loss of appetite
- **Systemic symptoms**: significant fatigue, unexplained weight loss, night sweats
- Possible psychological distress due to awareness of serious illness
**Meaning for daily life:**
This stage usually has a major impact. Fatigue can be overwhelming. Breathing can become difficult, making travel and physical activities challenging. Eating can become less enjoyable due to fatigue and possible medication side effects. The need for more intensive treatment and regular check-ups demands a lot from daily life. Many patients struggle with their emotional wellbeing and see their independence decline.
**Survival rates in metastatic stage:**
For metastatic sarcomas without targeted treatment, median survival is generally shorter than a few years, but this varies considerably. With certain types of sarcomas (e.g., some Ewing's sarcomas) and modern combination therapies (chemotherapy, immunotherapy, targeted therapy), longer periods of tumor control can be achieved. Publications from 2025–2026 describe new approaches (e.g., peptide vaccines for Ewing's sarcoma and CAR-T cell therapies) for which long-term responses are still being studied. It is essential to understand that survival rates are averages over large groups and say nothing about the individual patient.
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Recurrence (return after treatment)
Some patients achieve a period without tumor signals after successful initial treatment, but see the disease return later. This can be local (in the same place) or as metastases (at a distance).
**Symptoms:**
Similar to the original presentation: return of swelling, pain, or (with metastases) symptoms such as cough or bone pain.
**Meaning for daily life:**
A recurrence can be emotionally very distressing. Treatment must be reconsidered and started again, taking the same toll in terms of sick days, side effects, and uncertainty.
**Survival rates:**
The prognosis after recurrence is generally worse than after initial diagnosis. Exact figures vary widely depending on tumor and treatment type.
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When to contact the treating physician?
Patients and their loved ones should contact their physician if:
- Rapid tumor growth or new swellings
- Severe or increasing pain that is not well controlled
- Persistent cough, shortness of breath, or chest pain
- Severe nausea, vomiting, or inability to eat
- Unexplained high fever
- Physical symptoms that severely limit daily activities
- Psychological distress, depression, or despair
Good communication with the treatment team helps with diagnosis, therapy adjustments, and support.
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_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._