Jorissennes sign, also known as J-sign, is a medical term referring to a diagnostic indicator used in assessing thoracic aortic aneurysms. However, when discussing this term, it's essential to look at synonymous phrases that convey the same meaning. These might include "indentation sign", "hourglass deformity", or simply "J-distortion". These phrases are frequently employed in the medical field to describe the characteristic appearance of the aorta when a partial rupture or bulge is present. Understanding these synonyms enhances communication between healthcare professionals and ensures a clear understanding of the condition being discussed. Familiarity with these alternative terms can significantly aid in the diagnosis and treatment of thoracic aortic aneurysms.