Doctors initially thought Ryan had a blood clot, but an infectious-disease doctor identified the true problem.
Last year he cut short a vacation to Italy because of an upper respiratory infection and a blood clot in his lungs.
First, she broke her hip, and after she was sent home, a blood clot landed her back at Ronald Reagan UCLA Medical Center.
blood clot n.
A semisolid, gelatinous mass of coagulated blood that consists of red blood cells, white blood cells, and platelets in a fibrin network.