leg lump

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hi, while showering this morning i noticed i had a fairly big lump under my leg, about 1inch x 1/2inch, that seems to have sprung up over night, because i didin't feel anything there yesterday. It is a bit sensitive but isn't painful. Any idea what it could be? Maybe a muscle knot or something of the like?

help is appreciated
thanks

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thanks for the help

[Dr. Kokil Mathur]

Hi
Welcome to the MedHelp forum!
A sudden onset swelling could be a hematoma from an injury you do not remember or a swollen lymphnode.
It can also be a bruised soft tissue, a lipoma that has been there but you were not aware of or a cyst.
Sometimes an abscess develops in reaction to a pin pricking the skin or an insect bite or an infection.
It is difficult to comment beyond this at this stage without examining. A clinical examination, fine needle biopsy or a CT scan can tell for sure what the lump is. Consult your doctor please. Take care!