The human
abdomen is
divided into regions by
anatomists and
physicians for purposes of study,
diagnosis, and
therapy. In the four-region scheme, four
quadrants allow localisation of
pain and
tenderness,
scars, lumps, and other items of interest, narrowing in on which
organs and
tissues may be involved. The quadrants are referred to as the left lower quadrant, left upper quadrant, right upper quadrant and right lower quadrant, as follows.