coughing up blood

what could be the cause of coughing up blood have been doing this since June of last year and doctors cannot get to the bottom of it, this is very concerning to me what could it be, they have ruled out tb, mono, valley fever, have even done a bronochsopy nothing showing up

[National Jewish]

There are too many causes of coughing up blood to list them all. It would be important to be sure that the blood is not originating in the nose, upper throat, sinuses or esophagus and then draining into the lungs.
Any lesion or spot in the lung, capable of repeatedly causing you to cough up blood, would usually be evident on a High Resolution CT Scan of the lungs. If that has not been done, it should be.
Other possibilities, without spots on the lung would include clots to the lung and high blood pressure in the lung blood vessels secondary to heart disease.

[Victoryia]

Sorry to hear what is happening. That sure is a long time not knowing what is going on.

Are you seeing a pulmonologist? If not, you may want to consider seeing one.

[mikeyc2002]

My mother had a heart attack 2 years ago (2000) and has since had angoplasty, she has had constant chest infections since the heart attack, Yet She has had several chest x-rays which all have come back clear. Can anyone please advice me on what may be the cause of this.

[mikeyc2002]

My mother had a heart attack 2 years ago (2000) and has since had angoplasty, she has had constant chest infections since the heart attack, Yet She has had several chest x-rays which all have come back clear. Can anyone please advice me on what may be the cause of this.