Reversed Intestinal Rotation: Report of Two Cases and Review of the Published Reports

Reverse intestinal rotation: a rare case of volvulus around a vitelline duct remnant

“…Midgut rotation anomalies are responsible for less than 1% of presentations of gastrointestinal obstruction in adults. Of these RIR was reported in 2–7% of cases, with a twofold female predominance 1 2. To the best of our knowledge, this is the first case report describing RIR with intestinal volvulus around the Meckel's diverticulum attached to the vitelline duct remnant.…”

“…RIR is a rare congenital anomaly of midgut rotation 1. Midgut rotational anomalies rarely present in adults, and are responsible for less than 1% of presentations of gastrointestinal obstruction in adulthood 1.…”

“…Midgut rotational anomalies rarely present in adults, and are responsible for less than 1% of presentations of gastrointestinal obstruction in adulthood 1. Of these RIR is the rarest form of midgut rotation anomaly and is seen in only 2–7% of cases, with a twofold female predominance 1 2…”

“…Between the 5th and 11th weeks the second phase of the 270° anticlockwise rotation takes place. This delivers the duodenum posterior to the superior mesenteric vessels and the DJ flexure at the ligament of Treitz 1. Failure of this stage leads to the development of RIR.…”

“…Reversed intestinal rotation (RIR) is the rarest form of midgut congenital rotation anomalies 1. Midgut rotation anomalies are responsible for less than 1% of presentations of gastrointestinal obstruction in adults.…”