A non-cancerous (benign) tumor often feels like a soft, rubbery, or firm lump under the skin that is easily movable, like a lipoma. It might cause localized pain, tingling, or numbness if pressing on a nerve, but often grows slowly and can sometimes be painless, though symptoms like swelling or pressure can occur as it enlarges.
Blood tests, a biopsy, or imaging—like an X-ray—can determine if the tumor is benign or malignant.
1. Clinical Examination: Benign tumors tend to be soft, movable, and painless. Malignant tumors are often hard, fixed in place, may cause pain, or be associated with changes in the skin.
An osteochondroma looks like a bony projection on the external surface of a bone, like a bony mushroom on a stalk, usually near a growth plate area. It can occur in any bone but is seen most often around the knee or upper arm. This tumor generally grows with the child and stops growing once the child completes puberty.
Benign (non-cancerous) lumps usually have these characteristics:
Cancerous tumors are more likely to feel firm to the touch than benign lumps or cysts. They may also feel less movable. Still, this isn't always the case. The only way to know for sure whether a lump is a tumor or a cyst— malignant or benign — is to have a healthcare provider check it.
Imaging tests, such as CT scans or MRIs, are helpful in detecting masses or irregular tissue, but they alone can't tell the difference between cancerous cells and cells that aren't cancerous. For most cancers, the only way to make a diagnosis is to perform a biopsy to collect cells for closer examination.
The most common benign bone tumor that presents as a palpable mass in a growing child is osteo- chondroma. The mass associated with an osteochondroma is firm and immobile and may be tender. The physical examination may help determine whether the mass is of osseous origin.
The 7 common warning signs of bone cancer are persistent bone pain (worse at night/activity), a noticeable lump or swelling near a bone, unexplained fractures from minor injury, unusual fatigue, unexplained weight loss, fever, and stiffness or limited movement in a joint, often mistaken for other issues like "growing pains" but these symptoms persist and worsen, requiring a doctor's visit.
Benign tumors tend to grow slowly and have distinct borders. Benign tumors are not usually problematic. However, they can become large and compress structures nearby, causing pain or other medical complications.
Benign masses are more likely to be painful to the touch, such as with an abscess. Benign tumors also tend to grow more slowly, and many are smaller than 5 cm (2 inches) at their longest point. Sarcomas (cancerous growths) more often are painless.
Fat tissue tumours
It usually develops as a soft, painless lump that grows slowly. Less often, a lipoma may develop as a group of many lumps or abnormal areas. Most lipomas develop in the fat tissue just under the skin (subcutaneous). They are usually found in the trunk of the body and the limbs.
Fast-growing tumors tend to double in days to weeks, whereas slow-growing tumors may take months to years.
Benign tumors, while sometimes painful and potentially dangerous, don't pose the same threat as malignant tumors. While benign tumors generally don't invade and spread, malignant cells are more likely to metastasize, or travel to other areas of the body. They also grow faster.
Most Common Childhood Cancers
Yes, MRI scans can often differentiate between malignant and benign tumors by analyzing the tumor's shape, size, and the way it interacts with the surrounding tissue.
It most often starts in the long bones of the legs or the arms. But it can happen in any bone. Bones contain a variety of different types of cells. Bone cancers are broken down into separate types, often based on the type of cell where the cancer began.
Symptoms. A lump or swelling can be the first sign of a benign tumor. Another is ongoing or increasing aching or pain in the region of the tumor. Sometimes tumors are found only after a fracture occurs where the bone has been weakened by the growing tumor.
Cancerous growths frequently have the solid, inflexible sensation of being fixed to your bone. Unlike many benign lumps, which are often smooth and spherical, they are commonly formed unevenly and can be easily detected with wellness scans. While some malignant masses may not hurt, others may cause discomfort or agony.
Benign tumors grow slowly, don't spread and often require simple treatment. Malignant tumors grow aggressively, invade tissues and can spread throughout the body.
Bone pain usually feels dull and achy — like the pain is coming from deep inside your body. The skin near the affected area will probably feel tender to any touch. It might also hurt when you move or use that part of your body. You'll probably be able to pinpoint exactly where your bone hurts.
An MRI can show if there's a tumor and give clues about whether it's benign or malignant. Radiologists, the doctors who read these scans, look for certain signs. For example, benign tumors often have smooth, well-defined edges, while malignant ones can appear jagged or irregular.
Hemangiomas: These are common benign tumors that grow from your blood vessels. They may look like red or purple bumps or raised areas on your skin. Lipomas: These are lumps of fatty tissue right under your skin.
Incurable cancers are those that current treatments cannot completely eliminate, often because they are advanced (spread) or have returned after initial treatment, but they are not necessarily untreatable; treatments like chemo, radiation, and new targeted therapies aim to control the disease, slow growth, relieve symptoms, and improve quality of life. Common examples of cancers often considered incurable include pancreatic, liver, brain, esophageal, and certain advanced lung cancers, but research continuously offers new hope, with many patients living longer with ongoing management.
Malignant tumors have irregular shapes and look different. It's important for doctors to understand these differences for diagnosis and treatment. A tumor biopsy is often needed to check if a tumor is benign or malignant. This involves looking at tissue samples under a microscope.