Lipomas are generally harmless, but if the lipoma changes shape, your physician may perform a biopsy. Treatment may include removal by surgery or liposuction if the lipoma bothers the patient. Small skin marks caused by pigment-producing cells in the skin. Moles can be flat or raised, smooth or rough, and some contain hair growths. Most moles are dark brown or black, but some are flesh-colored or yellowish.
Moles can change over time and often respond to hormonal changes, such as during pregnancy.
Most moles are benign and no treatment is necessary. However, some moles closely resemble skin cancer. In addition, some benign moles develop into skin cancer. See below for signs to watch for in suspicious moles. Atypical moles can be tan to dark brown, on a pink background.