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INTRODUCTION AND IMPORTANCE: The incomplete common mesentery, resulting from a rotational anomaly, is a rare but potentially life-threatening condition. This congenital anomaly is characterized by persistent embryonic bowel arrangement and an extremely short mesentery root. Complications typically manifest during neonatal or pediatric stages, with limited occurrences in adulthood. Herein, a compelling case of an 83-year-old male with small bowel volvulus and incomplete common mesentery, underscoring the critical importance of recognizing and addressing rare but potentially life-threatening complications in the geriatric population. CASE PRESENTATION: An 83-year-old male, post-prostatectomy, presented with acute abdominal distress, indicating small bowel volvulus associated with incomplete common mesentery. Dehydration signs were evident on admission, and imaging confirmed the diagnosis. Urgent surgical intervention, including the Ladd procedure, successfully resolved the condition with a six-day recovery. CLINICAL DISCUSSION: Fetal digestive tract rotation anomalies lead to incomplete common mesentery, posing risks of volvulus. Complications, whether acute or chronic, require timely recognition. Diagnostic modalities, including the "whirlpool" sign on imaging, play a vital role. The Ladd procedure remains the standard treatment, addressing mesenteric anomalies and preventing recurrence. CONCLUSION: This case highlights the critical nature of small bowel volvulus with incomplete common mesentery, emphasizing the importance of recognizing and managing this rare condition promptly. Awareness, diagnostic accuracy, and timely surgical intervention are crucial for favorable outcomes, particularly in the geriatric population.

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Common mesentery is an abnormal rotation of the primary umbilical loop characterized by inverted positioning of the mesenteric vessels; the mesenteric vein is displaced to the left of the artery. The inversion can be complete or incomplete. If it is incomplete, the mesenteric root is very short, with an empty right iliac fossa and the caecum in high median or subhepatic position. If it is complete, the entire small intestine is on the right, the entire large intestine is on the left; there is no third duodenum, and the second duodenum is anastomosed in the jejunum to the right of the superior mesenteric vessels. Cecal volvulus is a rarely encountered cause of acute intestinal occlusion and should be considered as a surgical emergency. There exist two main types of volvulus: by twisting of the large intestine around its axis, which remains in place; or by tilt and to rotation of the colon, which changes position.

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INTRODUCTION AND IMPORTANCE: A common mesentery is defined by the persistence of an embryonic anatomical arrangement secondary to an anomaly of rotation of the primary umbilical loop. Caecal volvulus is a rare cause of intestinal obstruction, which account for 1 to 1.5 % of all intestinal obstructions. A combination of both, intestinal mal rotation and caecal volvulus is rare. CASE PRESENTATION: We report this rare entity in a 50 year old male with no history of abdominal surgery who was admitted for an acute intestinal obstruction. Clinical examination found a non-complicated right inguinal hernia. Radiological assessment showed signs of an incomplete common mesentery and an important small bowl distention with a transitional zone near the profound inguinal ring. Emergency surgery was performed. Surgical exploration didn't find signs of strangulation in the inguinal hernia which motivated midline laparotomy. We discovered a caecal volvulus with an incomplete common mesentery and ischemic lesions in the caecum. Ileocaecal resection was performed with ileocolostomy. DISCUSSION: Common mesentery can be complete or incomplete. It is often well tolerated in adulthood. This intestinal malrotation can sometimes cause serious complications such as volvulus. Their association is rare. Radiology can be very helpful in leading to the diagnosis, but the diagnostic process should not delay surgical intervention which is the basis of the treatment. CONCLUSION: Caecal volvulus is a serious complication of intestinal malrotation. This association is rare in adulthood and symptoms are not specific. Emergency surgery is necessary.

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INTRODUCTION AND IMPORTANCE: Malrotation is usually revealed early in infancy and or later in childhood, even more unusually in adulthood. This disorder is treated through Ladd's procedure. Literature is limited on the long-term outcomes of this approach, especially into adulthood. CASE PRESENTATION: We present a case of a 33 years male with a history of a laparotomy as a new born for a bowel obstruction secondary to malrotation, presenting with an obstruction and colonic volvulus. Laparotomy reveals a volvulus of the coecum secondary to a failure of the coecum to attach during surgery performed at neonatal age. CLINICAL DISCUSSION: For a patient operated on during the neonatal period for intestinal malrotation, the examination for sub occlusive episodes should suggest a recurrence of malrotation such as coecal volvulus, and the possibility of technical malfunction during the previous procedure. This reflection leads us to consider the necessity of performing coecopexy systematically during the first surgery. CONCLUSION: Ladd's technique is the surgical treatment of the incomplete common mesentery. The fixation of the coecum could be done in a systematic way to prevent a possible coecal volvulus which can be responsible for digestive necrosis and often even a fulminant evolution.

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Intestinal malrotation in children is a rare aberration, due to a halt in the rotation and attachment of the primitive gut, it can be asymptomatic if the rotation terminates at 90 degrees, which manifests itself in unusual forms of appendicitis as in our observation, or dangerous in cases of inadequate common mesentery and worsened by small intestine volvulus. This 12-year-old boy experienced abdominal discomfort in the hypogastrium and left iliac fossa 4 days before admission. The pain had been developing in a feverish setting, and the clinical examination had revealed abdominal sensitivity. A biological inflammatory syndrome was detected throughout the biological workup, the CT scan allowed the diagnosis of acute appendicitis on a complete common mesentery, and the patient underwent a laparotomy appendectomy. Even though children frequently experience acute appendicitis in its conventional form, it is nevertheless highly challenging to identify in its atypical forms when intestinal malrotation is involved. An abdominopelvic CT scan is used to make the diagnosis, and appendectomy, preferably with laparoscopy, is the recommended course of action.

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Celiacomesenteric trunk (CMT) refers to the common origin of celiac trunk and superior mesenteric artery which is a very rare anatomical variation. CMT is incidentally diagnosed during angiography or abdominal computed tomography scanning. The diagnosis of CMT may inform surgical practice and prevent damage during invasive radiologic procedures, lowering thus the rate of iatrogenic errors. Complete common mesentery is in its turn a rarer congenital anomaly that arises from an abnormal rotation of primitive small intestine during embryonic development. We report a case of a 48-year-old man, suffering from chronic abdominal pain, and postprandial discomfort. The patient underwent an abdominal contrast-enhanced computed tomography that detected a CMT associated with common complete mesentery. According to our review of bibliography, this is the first case report to simultaneously report both congenital anomalies (CMT and common complete mesentery). Furthermore, the CMT described here has not been described in previous classifications and represent a novel anatomical variation of CMT.

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Intestinal malrotation is a congenital rotational anomaly that results of abnormal rotation of the gut, said to occur in 1 in 6000 live births. Common mesentery predisposes to volvulus of the midgut and internal hernias due to the left position of the cecum and appendix. The association of this anomaly with acute left appendicitis is rarely reported in the literature. Occurrence of acute appendicitis on common mesentery is a source of diagnosis difficulties, which may lead to a surgical management delay. We report a case of a 10-year-old boy, admitted for a left-sided iliac pain whose radiological investigations confirmed a left acute appendicitis associated with complete common mesentery. The child underwent laparoscopic surgery with simple post-operative follow-up.

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Situs inversus is a rare anomaly characterized by mirror-image location of of thoracic and abdominal organs. It can be associated with several other malformations including common mesentery which is a rare type of malrotation that develops as a result of the rotation of the intestines and with wandering spleen which is a rare anomaly characterized by the unusual position of the spleen in the abdomen and that most often occurs in children. We here report the case of a male patient aged 8 years diagnosed with these three entities. He was admitted with chronic abdominal pain. Ultrasound assessment was performed. Clinical examination showed sensitive pelvic mass. Ultrasound objectified abnormal position of the liver and spleen (the liver in the left hypochondrium and the spleen in the right hypochondrium) and an oval isoechogenic mass characterized by tissue structures within the echo image in the spleen, located in the supravesical fossa, lateralized to the right. CT scan confirmed that the liver occupied both hypochondria, with the hilus and gallbladder found on the midline; the splenic fossa was empty and the supra-vesical pelvic mass was homogeneous, isodense to splenic parenchyma and raised in the same way to the spleen (it was a floating spleen), its arterial vascular pedicle was directly connected to the abdominal aorta. Intestinal rotation abnormality suggesting common mesentery was also objectified.

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Emergency diagnosis of small bowel volvulus can be established in patients with acute intestinal obstruction, or even shock, or repeated abdominal pain often associated with motility disorders. This is a life-threatening complication of common incomplete mesentery, which is defined as an intestinal malrotation occurring very rarely in adults. Clinical symptoms are non-specific, hence the importance of knowing the radiological features, in particular scannographic features of this rare entity, thus enabling early therapeutic management. We here report the case of a 65-year-old patient admitted with total small bowel volvulus complicating common incomplete mesentery, diagnosed based on abdominal computed tomography (CT) scan and confirmed at surgery, who had favorable outcome.

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Polysplenia syndrome associates multiple spleens to other malformations, most frequently cardiac, vascular, visceral, and biliary malformations. Polysplenia has been described mainly in childhood owing to critical anatomic malformations related to cardiac defects or biliary atresia. We present a case of polysplenia syndrome found in a 58-year-old man. Only those with mild anatomical abnormalities reach adulthood without a diagnosis. Radiological examinations are helpful to the diagnosis by ascertaining the location and number of spleens, location of other organs in the chest and abdomen, and identification of other associated anomalies.

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Complete common mesentery is a rare abnormality in midgut rotation. Its detection is exceptional during adulthood because, during this period, is very often asymptomatic and therefore not diagnosed. Complete common mesentery may be discovered incidentally in patients with ectopic appendicular syndrome, as in our case study. We here report the case of a 42-year old patient presenting with acute clinico-biological pelvic inflammatory disorder. CT scan allowed the diagnosis of complete common mesentery associated with acute appendicitis. Laparotomy confirmed the diagnosis of perforated acute appendicitis associated with intestinal malrotation. Appendectomy outcomes were favorable.

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INTRODUCTION: Intestinal malrotations are rare and may be asymptomatic until adulthood. There are only a few descriptions of gastric bypass with intestinal malrotation. If the duodenojejunal angle is not correctly seen, as is generally the case, there is a risk of creating an antiperistaltic anastomosis. PRESENTATION OF CASE: We describe required attitude and cases of gastric bypass performed on two patients who had a complete common mesentery. In both of our patients, the transverse colon was not running across the abdomen and the duodenojejunal angle was "absent". We therefore looked for the caecum in order to unravel all of the small intestine. We were able to carry out Roux en Y gas- 42 tric bypass with uncomplicated post-operative courses for both 43 patients. The result in weight loss was perfect and identical to that of patients without anatomical abnormality. DISCUSSION: In our cases, ultrasound to investigate for gallstones did not provide a pre-operative diagnosis. It is extremely difficult to investigate for the mesenteric vessels by ultrasound in obese patients and for this reason the finding was not made preoperatively. The most important thing to do is make the diagnosis of malrotation preoperatively. For this reason the golden rule in performing a gastric bypass is to clearly visualise the duodenojejunal angle which allows an unknown bowel malrotation to be identified. Following these cases, the study of the oeso-gastro-jejeunal transit is now part of our pre-operative assessment. CONCLUSION: Bariatric surgeons need to be aware of these abnormalities. If a common mesentery is present the gastric bypass can still be performed.

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The purpose of this study was to describe the common mesentery in its occlusive form and practice driving before this emergency. The mesentery is a common abnormality of rotation of the primitive intestinal loop or omphalomesenteric loop during embryonic development.Two cases of intestinal obstruction by strangulation were received in urgency. They were a 55 year old man who checked himself into the emergency department and a 14 year old girl brought in by her parents. These were 2 cases of acute intestinal obstruction on incomplete common mesentery. The intestine was turned to complete common mesentery in both cases. Embryologically, it is anomalies of rotation and joining of the primitive intestine that are causing the incomplete common mesentery , the source of acute intestinal obstruction due to strangulation. CONCLUSION: The common mesentery poses a diagnostic and therapeutic problem. Its symptomatology is that of occlusion by strangulation and the surgeon must note this before any obstruction.

Le but de cette étude était de décrire le mésentère commun dans sa forme occlusive et la conduite pratique devant cette situation urgente. Le mésentère commun est une anomalie de rotation de l'anse intestinale primitive ou anse omphalomésentérique, lors du développement embryonnaire.Deux cas d'occlusion intestinale par strangulation ont été reçus en urgence. Il s'agissait d'un homme de 55 ans venu de lui-même dans le service d'accueil des urgences et d'une fillette de 14 ans amenée par ses parents. Il s'agissait de 2 cas d'occlusion intestinale aiguë sur mésentère commun incomplet. L'intestin a été mis en mésentère commun complet pour les 2 cas. Embryologiquement ce sont les anomalies de rotation et d'accolement de l'anse intestinale primitive qui sont à l'origine du mésentère commun incomplet, source d'occlusion intestinale aiguë par strangulation. CONCLUSION: Le mésentère commun pose un problème diagnostique et thérapeutique. Sa symptomatologie est celle d'une occlusion par strangulation et le chirurgien doit y penser devant toute occlusion.