INTRODUCTION We discuss asymptomatic colonic pneumatosis, an unexpected finding of computed tomography colonography that we must see as distinct from perforation. Among the papers detailing complications with computed tomography colonography, we found only one report focusing on linear pneumatosis. CASE PRESENTATION We report the case of a 75-year-old Caucasian woman who had a high level of c...

We consider the electrostatic inverse boundary value problem also known as electrical impedance tomography (EIT) for the case where the conductivity is a piecewise linear function on a domain Ω ⊂ Rn and we show that a Lipschitz stability estimate for the conductivity in terms of the local Dirichlet-to-Neumann map holds true.