Textbook of Clinical Anatomy

• abdomen - A major anatomical region located between the thorax and the pelvis, bounded superiorly by the diaphragm and inferiorly by the plane of the pelvic inlet. It contains the main organs of the digestive and urinary systems. In psychiatric and neurological semiology, the clinical examination of the abdomen is crucial for identifying somatopsychic correlations, such as hypochondriasis (somatic delusion focused on abdominal organs), digestive manifestations of severe anxiety, or altered abdominal cutaneous reflexes in pyramidal syndromes.