Hi, first are you sure it is Fibrolipoma? if yes, then rest assured it is benign.
Lipofibroma is Lipoma with some fibrous tissues unless specified e.g. Lipo Sarcoma
Lipoma is just a lump of fat, usually requires treatment if it compress some organs or make the patient look i shall say wee bit ungainly or for Biopsy
to make sure it is not
Malignant(opposite of benign).