  A Bose-Einstein condensate (BEC) formed on a curved surface with a distinct
topology has been a hot topic of intense research, in search of new phenomena
in quantum physics as well as for its possible application in quantum
computing. In addition to the study of a spherical-shell-shaped BEC, we studied
the formation of a cylindrical-shell-shaped harmonically-trapped dipolar BEC of
$^{164}$Dy atoms theoretically using an improved mean-field model including a
Lee-Huang-Yang-type interaction, meant to stop a collapse at high atom density.
To test the robustness of the cylindrical-shell-shaped BEC, here we study its
expansion in the same model. We find that as the harmonic trap in the $x$ and
$y$ directions are removed, maintaining the axial trap, the
cylindrical-shell-shaped BEC expands in the $x$-$y$ plane without deformation,
maintaining its shell-shaped structure. After an adequate radial expansion, the
axial trap can be relaxed for a desired axial expansion of the
cylindrical-shell-shaped BEC allowing its observation.
