Raised tattoo on back of shoulder on lymphodema side

Hi a long time since i  posted on here, i am 8 1/2 years post DX , i have lymphodema in right arm ( surgery side ) which is undercontrol using a compression sleeve, i had a tattoo on my back 1 1/2 years ago which comes out to my right shoulder , i have just noticed it is slightly raised in areas, its not painful or itchy, anyone else had this or know whether it is due to my lymphodema ?