chapter  21
Mesenteric considerations in resection of the transverse colon
WithJ. CALVIN COFFEY, IAN LAVERY
Pages 10

Classical anatomic depictions of the transverse mesocolon describe it as inserting directly into the posterior abdominal wall along a linear attachment [1–7]. As per these descriptions, the line of attachment extends from the hepatic flexure across the upper abdomen to the splenic flexure. According to the current appraisal of mesenteric anatomy, the transverse mesocolon is formed by a coalescence of both hepatocolic and splenocolic mesenteric confluence, at the middle colic adipovascular pedicle [1,2,7–10]. As such the transverse mesocolon does not have a linear attachment to the posterior abdominal wall per se. Instead, it is mainly comprised of mesenteric regions attached over a broad area.