Thank you for the query.
Small intestines are located all over the abdomen and almost every region of abdomen can contain it. I assume that the bulge is in the upper right abdomen?
If so, gallbladder
can be palpable as a bulge like in this area.
If the bulge is in the scar area, hernia
is the most probable reason of a lump. Such lump should be soft in touch and get smaller when lying down.
The best way to find out what are you dealing with is to have an ultrasound
done. Otherwise it will be really hard to guess what exactly it is.
Hope this will help. Feel free to ask further questions.