In the nine-region scheme, which region lies to the left of the umbilical region (middle row)?

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In the nine-region scheme, the abdomen is divided into three columns (left, middle, right) and three rows (top, middle, bottom). The middle row includes the left lumbar, umbilical, and right lumbar regions. The umbilical region is centered around the navel, so the region immediately to its left in the same row is the left lumbar region. The epigastric region sits above them in the top middle region, not in the middle row. So the region to the left of the umbilical region is the left lumbar region.