Sarcoma Awareness Month 2026
Sarcoma is not one disease. It is more than 100 rare cancer subtypes affecting people of all ages, often with symptoms that appear harmless at first.
It affects a wide range of tissues throughout the body, including muscles, bones, nerves, cartilage, tendons, blood vessels, and fatty and fibrous tissues.
Typically, they develop in the arms, legs, and trunk. They can also be found in the stomach and intestines, the soft tissue behind the abdominal organs (retroperitoneal sarcomas), and the female reproductive tract.
Because sarcoma is rare and highly heterogeneous, patients and families frequently face challenges that are very different from those seen in more common cancers: delayed diagnosis, difficulty accessing specialist care, limited research, and a sense of isolation.
In the United States alone, an estimated 13,910 new cases of soft tissue sarcoma and 4,110 new cases of bone and joint cancer are expected to be diagnosed in 2026, together accounting for roughly 7,600 deaths.
Because sarcomas are rare and their symptoms can be vague a lump, swelling, or unexplained bone pain patients often need a specialist referral to reach an accurate diagnosis.
Sarcomas are classified into three main types:
- soft tissue sarcoma,
- bone cancer, and
- gastrointestinal stromal tumors.
Within these classifications, there are numerous subtypes. Some tumors are benign or grow slowly; nevertheless, many are aggressive and require comprehensive therapy.
Therefore, if you or a loved one is presented with a sarcoma suspect, it is critical to promptly seek the services of highly experienced experts for diagnosis and therapy.
Soft Tissue Sarcoma – Definition, Risk Factors, and Symptoms
Soft tissue sarcoma is a broad term for cancers that start in soft tissues, which connect, support, and surround different body parts, joints, and organs.
The soft tissues of the body include the following:
- Cartilage
- Fibrous tissue
- Muscles
- Tendons
- Tissues around joints
- Fat Blood vessels
- Lymph vessels
- Nerves
Soft tissue sarcomas may grow anywhere in the body, but they are most common in the arms, legs, and various parts of the abdomen. They can show up as a painless swelling under the skin. When a tumor strains on neighboring nerves, muscles, or blood vessels, it may lead to discomfort. When a tumor grows in the abdomen, symptoms may not appear until it has grown to a large size.
Having certain inherited disorders can increase the risk of soft tissue sarcoma.
- Li-Fraumeni syndrome (multiple tumor syndrome)
- Neurofibromatosis type 1 (multiple tumor syndrome)
- Gardner syndrome (familial colon polypes)
- Nevoid basal cell carcinoma syndrome (skin cancer, Gorlin syndrome)
- Werner syndrome (premature aging).
Other risk factors for developing a soft tissue sarcoma include the following:
- having had radiation therapy
- having lymphedema in the arms or legs for a long time
- being exposed to certain chemicals, such as a special X-ray contrast drug, vinyl chloride, or arsenic
- being infected with HIV and human herpesvirus 8
Gastrointestinal Stromal Tumors – Definition, and Symptoms
A gastrointestinal stromal tumor (GIST) is a condition in which abnormal cells grow in the tissues of the gastrointestinal tract. The GI system consists of the stomach, small intestine, and large intestine (colon).
Some GISTs proliferate slowly over time and may never present a problem for a patient, whereas others can grow and spread rapidly. GISTs are most frequent in the stomach and small intestine. However, they can occur anywhere in or near the gastrointestinal tract.
The risk of GIST is increased in people with an inherited change in a specific gene. In rare cases, GISTs can be found in several members of the same family. In rare situations, GISTs might appear in many members of the same family. GIST can be associated with genetic syndromes like Neurofibromatosis NF1 or the Carney triad.
The symptoms of GIST are nonspecific and may also be caused by other conditions. Nonetheless, contact your doctor to clarify the reason when you
- detect blood in the stool or vomit.
- suffer from recurrent, sometimes severe pain in the abdomen
- feel full after only a little food has been eaten
- have trouble or pain when swallowing
- feel very tired without other explanation
An investigational combination therapy, bezuclastinib plus sunitinib, is currently under FDA priority review for patients with GIST who have already been treated with imatinib, the standard first-line drug. A decision is expected by the end of November 2026. This reflects a broader shift toward more targeted, biomarker-driven GIST treatment.
Bone Cancer – Definition, Risk Factors, and Symptoms
Bone cancer is rare and includes numerous types, including osteosarcomas, chondrosarcomas, and Ewing sarcoma.
Osteosarcoma, the most prevalent type of bone cancer, begins in osteoblasts, bone cells that produce new bone. Osteosarcomas typically develop at the ends of the long arm and leg bones in the body. More than half of all osteosarcomas are seen around the knee. This kind of bone cancer typically begins in childhood, around the time puberty begins.
Ewing sarcoma originates from a different type of cell in bone or soft tissue. This tumor typically develops in the bones of the legs, arms, feet, hands, chest, pelvis, spine, or skull. It occurs less frequently in the soft tissue of the trunk, head, and neck, as well as the rear of the abdomen and other locations. Ewing sarcoma primarily affects teenagers and young people in their early twenties.
More than 100 Subtypes
Especially soft tissue sarcoma may arise in many different types. If you are searching for more information, we found a highly informative and trustworthy Patient Guide for you, published by the Anticancer Fund and the European Society for Medical Oncology, in English and Arabic:
https://www.esmo.org/for-patients/patient-guides
Information about different types of bone cancer, also for children, teenagers or young adults, is provided by the UK Bone Cancer Research Trust https://www.bcrt.org.uk/information/downloadable-material/
Given how quickly sarcoma treatment is evolving, getting a second opinion helps confirm your diagnosis and uncover options — including new therapies and clinical trials. Reach out to Know How for a second opinion today
