Examples of such a condition are to be found in bog-spavin, in hygroma of the stifle, and sometimes in the fetlock.
In time, the original secretion frequently becomes a watery fluid, resembling the contents of the hygroma previously mentioned.
hygroma hy·gro·ma (hī-grō'mə)
n. pl. hy·gro·mas or hy·gro·ma·ta (-mə-tə)
A cystic swelling containing a serous fluid. Also called hydroma.