Hemoptysis can happen with lung malignant growth, contaminations, for example, tuberculosis, bronchitis, or pneumonia, and certain cardiovascular conditions.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". Online Journals are scholarly and peer reviewed journals.Hemoptysis (plural: hemoptyses) refers to coughing up of blood. Generally, it appears bright red in color as opposed to blood from the gastrointestinal tract which appears dark red. It is considered an alarming sign of a serious underlying etiology.Hemoptysis is an important symptom that elicits fear in both the patient and physician. Work-up for this symptom should be undertaken immediately unless the problem is both mild and recurrent, in which case a conservative approach may sometimes be preferable.There are actually a ton of possible causes for hemoptysis, so doctors have their work cut out for them trying to pinpoint the culprit. In fact, in about 25% of cases, no cause is identified at all! In the United States, the most common cause is acute bronchitis, which is when the bronchi become inflamed or swollen. These cases usually clear on their own but can progress into more serious conditions. In the rest of the world, tuberculosis, a bacterial infection of the lungs, is the most common cause of hemoptysis.