[en] It is shown that the calculation of quantum effects associated with the classical four dimensional pseudoparticle can be carried to completion in the one loop, lowest order in source approximation, with size effects calculated exactly. The result is finite, and leaves symmetry breaking results intact. For the case of two flavors the theory reduces to a particularly simple form which suggests that the pseudoparticle acts as a source of zero mass bosons which in turn are made of fermion pairs