instruction: hello doctor I am a year old male I had a hard lump on the left lower back between top of the hip bone and lower ribs no pain to the touch it feels about the size of a marble or the end of a pinky finger what is it most likely I did have a hard fall on my back about a year ago in that area but I am not sure if that could be related I want to know what is the chances of something like kidney cancer as that is what comes up when I use do google can you feel a lump from the kidney that close to the surface does it feel like what I described I included an image of the same I am currently using prilosec
output: hello I have seen the picture looking at the location you pointed there should be no lump ideally in that area as it is purely muscular having said that in your case since you had a fall at that point last year possibly a hematoma has formed and not totally dissolved due to lack of movement or physiotherapy this is quite normal and not worrisome chances of kidney cancer if it is painless are actually one in a million if you have no other symptoms especially urinary symptoms I would recommend an ultrasound abdomen pelvis once feasible