Most swellings and lumps have harmless causes, but earlier detection of sarcoma improves treatment results, so any lump you notice should be checked by a doctor [1]. The main sign of soft tissue sarcoma is a lump deep under the skin that feels solid, is painless and hard to move, grows over time and may become painful [1].
What is the main symptom?
The main sign of soft tissue sarcoma is a lump somewhere on the body. It is typically deep under the skin, solid to the touch, painless and hard to move; it gets larger over time and may become painful [1].
Depending on where it grows there can be other symptoms: abdominal discomfort and constipation if it is near the stomach, or a persistent cough if it is near the lungs [1].
Is every lump a sarcoma?
No. Lumps and swellings are very common and most have harmless causes, but earlier detection of cancer improves treatment outcomes, so every lump should be assessed [1]. The source does not give a particular size or growth-rate threshold; a lump that keeps growing and starts to hurt deserves attention [1].
How is it assessed?
The doctor examines the lump and may order blood tests and an ultrasound. If anything worrying appears you are referred to a specialist for further tests; an urgent referral does not mean you definitely have cancer [1].
In our clinic the usual sequence is examination, imaging (ultrasound and, if needed, MRI) and, when necessary, a biopsy, which should be planned together with the team that would do any surgery.
When should you see a doctor?
Do not wait if you have [1]:
- Any newly noticed lump or swelling under the skin
- A lump that grows over time
- A lump that starts to be painful
Frequently asked questions
- Is a painless lump harmless?
- No. Painlessness does not make a lump harmless; a sarcoma is typically painless [1].
- How big does a lump have to be before I worry?
- The source does not give a size threshold; a lump that grows and becomes painful should be assessed [1].
- Which tests come first?
- Examination, blood tests and an ultrasound; referral to a specialist if something worrying is found [1].
- Does an urgent referral mean cancer?
- No, it does not mean you definitely have cancer [1].
This article does not make a diagnosis. A lump must be assessed by a doctor with examination and imaging.
Sources
- Soft tissue sarcoma: symptoms. NHS (nhs.uk), 2024. nhs.uk
This article is general information and does not replace an examination or imaging. If you have symptoms, see a doctor.