#occlusion  closure or blockage (as of a blood vessel)
  supertype:  attack  a sudden occurrence of an uncontrollable condition; "an attack of diarrhea"
  subtype:  laryngospasm  a closure of the larynx that blocks the passage of air to the lungs
  subtype:  embolism  occlusion of a blood vessel by an embolus (a loose clot or air bubble or other particle)
     subtype:  air_embolism__airembolism__aeroembolism__gas_embolism__gasembolism  obstruction of the circulatory system caused by an air bubble as, e.g., accidentally during surgery or hypodermic injection or as a complication from scuba diving
     subtype:  fat_embolism__fatembolism  serious condition in which fat blocks an artery; fat can enter the blood stream after a long bone is fractured or if adipose tissue is injured or as a result of a fatty liver
     subtype:  pulmonary_embolism__pulmonaryembolism  blockage of the pulmonary artery by foreign matter or by a blood clot
  subtype:  thromboembolism  occlusion of a blood vessel by an embolus that has broken away from a thrombus
  subtype:  thrombosis  the formation or presence of a thrombus (a clot of coagulated blood attached at the site of its formation) in a blood vessel
     subtype:  cerebral_thrombosis  a blood clot in a cerebral artery or vein
     subtype:  coronary_thrombosis__coronary  obstruction of blood flow in a coronary artery by a blood clot (thrombus)
     subtype:  milk_leg__white_leg__whiteleg__phlegmasia_alba_dolens  painful thrombosis of the femoral vein in the leg following childbirth
     subtype:  phlebothrombosis__venous_thrombosis  thrombosis of a vein without prior inflammation of the vein; associated with sluggish blood flow (as in prolonged bedrest or pregnancy or surgery) or with rapid coagulation of the blood
  subtype:  coronary_occlusion  occlusion of a coronary artery caused either by progressive atherosclerosis or by a blood clot

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