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.
WebMD has an image slide show depicting precancerous skin lesions and skin cancer conditions. Information about various types of skin cancers and methods of recognizing them accompanies these pictures.
Pictures help identify skin cancer by showing people examples of what unusual or suspicious moles look like, according to Mayo Clinic. Features of a skin growth that may signify skin cancer are asymmetry, border irregularity and color changes. A diameter greater than one fourth of an inch or 6 milli
Painful lumps under the skin are usually caused by injuries or infections, states MedlinePlus. These lumps include boils, which are caused by infected hair follicles, and carbuncles, which are groups of boils, according to WebMD. Lipomas are soft lumps under the skin that have no known cause, states
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.
The cause of lipoma, a condition in which the skin has fatty deposits below it, is not clear, but it may involve genetic factors, notes WebMD. A mild injury also sometimes causes growth of the fatty deposits. Lipomas are harmless and do not progress into cancer.
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.
Lumps under the skin can have a variety of causes, including lipomas, enlarged lymph glands, boils, neurofibromas, dermatofibromas and some cancers such as keratoacanthoma, according to WebMD and Patient.info. For example, lipomas are tumors made of soft tissue that occur singly or in small groups,
Several conditions can cause lumps and bumps to form below the skin or on its surface, such as cherry angiomas, skin cysts, epidermoid cysts, keratosis pilaris and folliculitis, according to WebMD. Skin bumps can also result from infections, allergic reactions, hereditary diseases or acne, reports H
Skin cancer symptoms include moles that change in size, color or texture; flat lesions with a crusted surface; and a pearly, waxy bump. There are several different types of skin cancer, and each presents with a slightly different set of symptoms, as stated by Mayo Clinic.