|Hemoptysis is coughing up blood from the respiratory tract. Blood come from the respiratory tract such as nose, mouth, throat, the airway passages leading to the lungs, or the lungs. The word "hemoptysis" derived from the Greek "haima," meaning "blood," and "ptysis," which means "a spitting". Massive hemoptysis is production of â¥ 600 mL of blood within 24 h.
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