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They usually occur just under the skin, but occasionally may be deeper. [1] Most are less than 5 cm (2.0 in) in size. [2] Common locations include upper back, shoulders, and abdomen. [4] It is possible to have several lipomas. [3] The cause is generally unclear. [1] Risk factors include family history, obesity, and lack of exercise.
Cosmetic subdermal implants on the lower arm. A subdermal implant is a body modification placed under the skin, allowing the body to heal over the implant and creating a raised design. Such implants fall under the broad category of body modification. Many subdermal implants are made out of silicone, either carved or mold injected.
Some hematomas are visible under the surface of the skin (commonly called bruises) or possibly felt as masses or lumps. Lumps may be caused by the limitation of the blood to a sac, subcutaneous or intramuscular tissue space isolated by fascial planes. This is a key anatomical feature that helps prevent injuries from causing massive blood loss.
A hard lump — of any shape or size — in your breast that doesn't move is the most common sign of breast cancer. It can be deep in the breast or visible on the surface. Think of it like a ...
Dermatofibromas [4] are hard solitary slow-growing papules (rounded bumps) that appear in a variety of colours, usually brownish to tan. They are often elevated or pedunculated . A dermatofibroma is associated with the dimple sign ; by applying lateral pressure, there is a central depression of the dermatofibroma.
Nodules are small firm lumps usually greater than 1 cm in diameter, found in skin and other organs. [ 1 ] [ 2 ] If filled with fluid they are usually softer and referred to as cysts . [ 2 ] Smaller (less than 0.5 cm) raised soft tissue bumps may be termed papules .
The most accurate use of the term granuloma requires a pathologist to examine surgically removed and specially colored (stained) tissue under a microscope. Macrophages (specifically histiocytes) are the cells that define a granuloma. They often fuse to form multinucleated giant cells (Langhans giant cell). [7]
When Chelsea Handler took the stage at the 2025 Critics Choice Awards, broadcast live from the Barker Hangar in Santa Monica, Calif., viewers couldn’t help but notice what was on the host’s arm.