I am a 14 year old girl and a few months back i found a lump in my skin in the lower part of my right leg, sometimes it hurts but the pain doesn t get any worse when i put pressure on it although it does feel as though there is air inside it and another gooey substance ... it started off small but recently got bigger and is approx 2cm circle and i have read online that it can be anything from just a ball of fat and tissue to something like cancer or a tumor , others in my family have suffered from cancer so i was wondering if it is anything to worry about, if so what else could it be?
Hi and welcome to Chat Doctor, thank you for your query. Usually pus indicate subcutaneous infection due to follcilitis, abscess or some other. Cancer is rare at this site with such manifestation especially in your age, so this is the last thing to think of. You should just visit doctor who can evaluate is it necessary to prescribe antibiotics, or it must be surgically Chat Doctor.  Also, biopsy can be done to be 100% sure about diagnosis. But I am sure that this is just lipoma or inflammation atheroma. Wish you good health. Regards