Epiploic appendages are flattened projections of serosa-enclosed fat found along the colon from the cecum to the lower portion of the sigmoid, attached chiefly along the anterior taenia coli. Their size varies from a few millimeters to several centimeters. Blood is supplied by means of a single circular artery and vein, forming an arcade which extends into the tag. These appendages are present after the fifth to the seventh fetal month, although they are often overlooked if the patient is young or thin. Their function is not definitely known. It is likely that they act as a depot for fat, as a protective mechanism in peritoneal infection and as a cushion to the colon and its increasingly more solid contents.
It is generally acknowledged that epiploic appendages frequently undergo torsion, infarction and calcification; that they often produce symptoms closely simulating abdominal conditions requiring operation is appreciated less widely, and that
GIFFIN HM, McMANAMY EP, WAUGH JM. SURGICAL SIGNIFICANCE OF EPIPLOIC APPENDAGES. Arch Surg. 1942;45(3):351-360. doi:10.1001/archsurg.1942.01220030018002