Which of the following conditions can produce hemothorax?
Myxoma
Congestive hea failure
Rheumatoid ahritis
malignancy
Hemothorax commonly seen in iatrogenic(traumatic),malignancy,pulmonary embolism. Hemothoraces are usually caused by an injury but may occur spontaneously: due to cancer invading the pleural cavity, as a result of a blood clotting disorder, as an unusual manifestation of endometriosis, in response to a collapsed lung, or rarely in association with other conditions . Ref Davidson edition23rd pg 630
Respiratory system