  We consider a simple model of a black hole surrounded by a toroidal structure
and experiencing deformation due to magnetic field and the tidal force. For
this system we construct the shadows of Preston-Poisson black hole, apply it to
supermassive black hole $M87^*$ and compare it with the shadows of
corresponding Schwarzschild and Kerr black holes. We find that for large
deviation parameters $B$ and $E$ the shadow of Preston-Poisson black hole is
clearly distinguishable from Kerr black hole provided the angular resolution of
measurements is of order $\mu\mathrm{arcsec}$.
