Doctors are stunned after a man coughed up a blood clot so large it came out in the exact shape of his right lung.
According to the New England Journal of Medicine, the 36-year-old man was initially admitted into intensive care at UC San Francisco Medical Center for heart failure.
Doctors say it was at this time he experienced “an extreme bout of coughing” and coughed up a 6-inch wide blood clot of his right bronchial tree.
The man died a week later.
“The patient was extubated 2 days later and had no further episodes of hemoptysis,” or coughing up blood, the author of the study wrote.
It may be possible that the man’s prescribed blood thinning medication helped to create the bright red clot.
Apparently the man had been coughing up much smaller clots days before the big one came out, according to The Atlantic.
Doctors say this is rare but not entirely groundbreaking with two similar cases previously recorded.