According to the American Society of Clinical Oncology, the symptoms of head and neck cancer can include a bump, lump or mass in the head and neck area. A lump on the head is not a sure indication of cancer, however, as other medical conditions can cause the same symptoms.
In many cases, a cancerous lump feels firm to the touch, according to Health magazine. However, malignant soft tumors are also a possibility, explains Cleveland Clinic.
A high percentage of skin lumps are not cancerous, according to University of Florida Health. Skin swelling and lumps can be caused by several factors, including trauma and infection.
PetEducation.com explains that calcinosis cutis is a condition in dogs that causes hard nodules to develop on the back or groin. Calcinosis cutis is caused by excessive treatments with corticosteroids or glandular tumors. Additional conditions that cause lumps on the back and body include hematomas
Testicular cancer lumps are generally about the size of a pea in the early stages and are typically not painful, according to WebMD. Although it is rare testicular cancer is the most common cancer in men under age 35.
One of the most common causes of a lump on the head is trauma to the site of the lump, which causes the tissues to swell and potentially bruise within one or two days of the injury, explains Healthline. Head lumps can also occur in the form of benign lesions, such as cysts or vascular masses, or due
Testicular cancer lumps often feel hard, though painless, according to Planned Parenthood. Lumps may be as small as a pea. In addition, the testicle may be swollen and feel thicker compared to the uninvolved side.
Possible causes of a lump in the hand include ganglion cyst, inclusion cyst, carpal boss and enchondroma, according to About.com. It is also possible a lump in the hand is sarcoma, a type of cancer, but this is rare.
A lump in the arch of the foot is a symptom of a type of skin cancer known as melanoma, states Medical News Today. A lump in the foot's arch is usually caused by a noncancerous nodule known as plantar fibroma, says the American Orthopaedic Foot & Ankle Society.
Some of the noncancerous causes of lumps in the mouth include warts, oral thrush, a torus and salivary gland tumors, notes Merck Manuals. Some precancerous causes of lumps in the mouth include leukoplakia and erythroplakia. These are often flat white or red spots that lead to oral cancer.