  We show how methods of continuum perturbation theory can be used to simplify
perturbative lattice calculations. We use the technique of asymptotic
expansions to expand lattice loop integrals around the continuum limit. After
the expansion, all nontrivial dependence on momenta and masses is encoded in
continuum loop integrals and the only genuine lattice integrals left are
tadpole integrals. Using integration-by-parts relations all of these can be
expressed in terms of a small number of master integrals. Four master integrals
are needed for bosonic one loop integrals, sixteen in QCD with Wilson or
staggered fermions.
