Does Xarelto Cause Swelling In The Elbow Joint?

My husband has recently had swelling on his elbow it looked as if a golf ball was inserted under the skin of the joint. The following day there was a bruise & the bruise has spread to quite a large area on his arm. He does not have any pain nor does he recall having injured the elbow. He does take Xarelto & are wondering if this could be contributing to the bruising. Thank you. Eileen Jackson