Could anyone tell me about a lump on the side of my lower part leg size 50p?

It's important to seek professional medical advice if you have a lump on your lower leg, especially if it's accompanied by other symptoms such as pain, swelling, or warmth. A doctor can properly assess the lump and determine its cause. Here are a few possibilities based on the information you've provided:

Lipoma: Lipomas are noncancerous growths made of fat cells. They're usually soft, movable, and painless, and can occur anywhere on the body, including the legs.

Cyst: A cyst is a fluid-filled sac that can form under the skin. They can be caused by various factors, such as blocked oil glands, trauma, or infection.

Muscle strain: If the lump is located in a muscle and is accompanied by pain or discomfort when using the muscle, it could be a muscle strain.

Skin tag: Skin tags are small, fleshy growths that hang off the skin and are usually harmless.

Ganglion cyst: A ganglion cyst is a fluid-filled sac that develops around a joint or tendon. It's often found on the wrist or hand, but can also occur on other parts of the body.

Abscess: An abscess is a collection of pus that forms in the body, typically caused by a bacterial infection. It can cause symptoms such as pain, redness, and swelling.

Swollen lymph node: Lymph nodes are small, bean-shaped organs that play a role in the body's immune system. They can swell in response to infection or inflammation in the nearby area.

Remember, this information is not a substitute for professional medical advice. If you're concerned about the lump on your lower leg, it's best to see a doctor for proper diagnosis and treatment.