A member asked:

Dad has acute respiratory infection. says he's coughing up "solid" (stone-like) mucus (???). what is this called? why would it happen?

A doctor has provided 1 answer

Broncholith?: Sometimes people cough violently for a long time, and finally bring up a little stone or stony material. These are called “broncholiths,” and are due to the ulceration of a calcified lymph node through the wall of the bronchial tube into its cavity. The condition is not serious although it may be very alarming, and after the stone has been disgorged the condition usually promptly clears up.

Answered 12/8/2015

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