title: Letter: Acute calf swelling.
mesh_terms: D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D006801:Humans; D007718:Knee Injuries / Q000150:complications*; D007866:Leg; D012421:Rupture / Q000175:diagnosis; D013583:Synovial Membrane / Q000293:injuries*; D013924:Thrombophlebitis / Q000175:diagnosis*