meso-gastrio is incorrectly written and should be written as "mesogastrio" as meaning:
Term of Greek origin, from mesos mese meson: placed in medium and gaster gone: stomach, belly. It is the central part of the human abdomen, above the navel. Physicians and Anatomists divide the surface of the abdomen into 9 areas through two straight vertical imaginary and two horizontal. The central area of the nine is the mesogastrio or umbilical area, under the epigastrium and on top of the hypogastrium.