Rather than doctors pulling the red, bloody blot out of the patient's lung, however, the man unexpectedly hacked it out himself, as the doctors later noted: "During an extreme bout of coughing".
However, over the course of a week, the man had started coughing up phlegm and blood, the cough being so severe that he coughed up an intact cast of the right bronchial tree.
During one of the coughing fits, the man eventually coughed up a bronchial tree, which is a series of tubes that distribute air from the windpipe to the lungs. The patient was already dying from heart failure.
The anti-coagulants the man was taking forced blood out of his pulmonary system and into his right lung.
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The pulmonary surgeon Dr Georg Wieselthaler told The Atlantic when he carefully spread out the clot, realising it was the ideal shape, he was "astonished". But because these machines can also increase the risk of blood clots, he was prescribed a blood-thinner medication.
"After a ventricular assist device was placed and anticoagulation therapy initiated, haemoptysis developed, and he expectorated a cast of the right bronchial tree", the journal wrote. But it's not anything fantastically fictional - it's a real blood clot that came out of the body of human being and is the exact shape of a lung passage.
"Blood clots may develop, which can travel through your blood vessels and block the blood flow to other organs, including your lungs making breathing hard", according to the Impella website. Indeed, the patient had several coughing episodes in which he expelled small amounts of blood, according to the report. But it's actually a blood clot, coughed up intact by a patient suffering from heart failure.
The woman suffered from asthma, and and after two weeks of particularly harsh coughing, herniating her lung so it slipped through her ribs.