Persistent Descending Mesocolon

Laparoscopic high anterior resection for triple colorectal cancers with persistent ascending and descending mesocolons: A case report

“…Persistent mesocolon is a developmental anomaly characterized by the colonic mesentery's failure to fuse with the dorsal abdominal wall (1). Although some clinical complications of persistent mesocolon, such as primary intestinal obstruction, colonic volvulus, and intussusception (2)(3)(4), have been reported, this condition is asymptomatic in most cases (1). In patients with persistent ascending and descending mesocolons, the sigmoid colon is located under the ascending colon.…”

“…In patients with persistent ascending and descending mesocolons, the sigmoid colon is located under the ascending colon. Characteristic anomalies, including adhesion between the mesentery and pelvic wall and a short descending mesentery, as well as the importance of careful surgical procedures were described (1,5,6). Such failure of fixation has often been demonstrated radiographically (1), and some cases of persistent mesocolon were recently reported in the field of laparoscopic colon cancer surgery (5,6).…”

“…Such failure of fixation has often been demonstrated radiographically (1), and some cases of persistent mesocolon were recently reported in the field of laparoscopic colon cancer surgery (5,6). Characteristic anomalies, including adhesion between the mesentery and pelvic wall and a short descending mesentery, as well as the importance of careful surgical procedures were described (1,5,6).…”

A colovesical fistula with a persistent descending mesocolon due to partial situs inversus: A case report

“…Failure of fusion between the primitive dorsal mesocolon and the parietal peritoneum during the fifth month of gestation leads to PDM. In the 1960s, this abnormality was reported by both Radiology and Gynecology [3], [4]. A colovesical fistula is a well-known complication in many different diseases.…”

Evidence of continuity of mesentery from duodenum to rectum from human cadaveric dissection – a video vignette

“…Standard dissection techniques have not resolved uncertainties about the continuity of the peritoneal fold, also termed the mesentery, which attaches the intra‐abdominal gut tube to the posterior abdominal wall . This is readily observed in the jejunum, ileum and the transverse and sigmoid colon; whereas other parts like the duodenum, ascending and descending colon, and rectum are considered to be devoid of any mesentery and retroperitoneal in the absence of a free‐hanging peritoneal fold .…”