Editing Colon and rectum (section)

=== '''Right/ascending colon''' ===

*** Extends from ileocaecal junction and extends upward towards the hepatic flexure. Approximately 15cm in length.
*** Anterior and lateral surfaces covered in peritoneum (considered intra-peritoneal) and the posterior surface is fixed against the retroperitoneum by the fascia of Toldt
*** Can occasionally be bound down by an extension of peritoneum across the front of it, known as Jackson's veil
*** Either abnormal mobility or abnormal fixation both predispose to caecal volvulus
*** Best mobilised along the lateral peritoneal reflection by incising the white line of Toldt - this represents the fusion line of the peritoneum with the posterior fascia of the same name
**** Must be aware of the proximity of D2 near the hepatic flexure, which can be inadvertently injured here
*** Important posterior relations:
**** Quadratus lumborum/psoas muscles
**** Ureter
**** Upper part - lower pole of right kidney laterally, D2/D3 medially
*** Anteriorly it is overlain by liver/GB