you are suffering from painful lump below right collar bone along with rotator cuff injury
.First of all injury and lump are not related.I want to know that what is the duration of lump?Is It soft or hard in feel?Is It growing or not?But you should get done MRI
of right shoulder, FNAC, and Biopsy
of lump. For pain take analgesic
.For rotator cuff impingement Arthoscopy of shoulder is required for diagnosis as well as therapeutic purpose.
get well soon.