Man coughs up blood clot shaped like a bronchial tree

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The 36-year-old man was admitted to the intensive care unit at University of California, San Francisco with symptoms of chronic heart failure, and during the next week, had coughed up small amounts of blood and had breathing problems.

Doctors are bewildered as to how an extraordinarily shaped blood clot came out of a patient.

The New England Journal of Medicine released the picture in their regular photo series.

A man coughed up a weird blood clot that was practically a copy of the inside of his lung, astonishing doctors around the world.


The unidentified man was admitted to the intensive care unit of the University of California San Francisco Medical Center, as per a New England Journal of Medicine article on November 29. "So with all these patients, you have to give them anticoagulants to make the blood thinner and prevent clots from forming".

During an extreme bout of coughing, the patient spontaneously expectorated an intact cast of the right bronchial tree.

During the week of his hospitalization the man's cough reportedly progressed to coughing up blood and phlegm.

"An Impella ventricular assist device was placed for management of acute heart failure, and a continuous heparin infusion was initiated for systemic anticoagulation". Don't say we didn't warn you.


"It's a curiosity you can't imagine".

The woman suffered from asthma, and and after two weeks of particularly harsh coughing, herniating her lung so it slipped through her ribs.

After coughing up the bronchial tree, doctors immediately intubated him and performed a bronchoscopy, but he later died from heart failure complications ('volume overload and poor cardiac output'), despite the placement of the ventricular assist device.

The bronchial tree is made up of the trachea and the two primary bronchi, which are the tubes that distribute air to the lungs.


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