  Dijet cross sections in neutral current deep inelastic ep scattering have
been measured in the range $10 < \Q2 < 10^4$ GeV$^2$ with the ZEUS detector at
HERA using an integrated luminosity of 38.4 pb$^{-1}$. The cross sections,
measured in the Breit frame using the $\kt$ jet algorithm, are compared with
next-to-leading-order perturbative QCD calculations using proton parton
distribution functions. The uncertainties of the QCD calculations have been
studied. The predictions are in reasonable agreement with the measured cross
sections over the entire kinematic range.
