A rare case of adult intussusception.

SUMMARY: Adult intussusception is rare, and its non-specific symptoms make the diagnosis particularly difficult. Imaging modalities such as X-ray, abdominal ultrasound and multidetector computed tomography (MDCT) may improve preoperative detection. In this report, we present a 53-year-old male with an ileocaecal intussusception. The patient underwent an extended right hemicolectomy and double barrel ileocolostomy. Histopathological review of the specimen identified the lead point as an intramural caecal lymph node which, as far as we are aware, is the first time this type of lead point has been reported.

Point-of-care ultrasound for the diagnosis of an atypical small bowel obstruction in a cannabis user: a case report.

This case report describes an atypical small bowel obstruction in a 71- years old cannabis user and how point-of-care of ultrasound (PoCUS) helped to its management by further orientating the physician toward the bowel obstruction etiology, namely intussusception. Intussusception is the invagination of an intestinal segment into the adjacent segment. The acute clinical presentation of intussusception often has non-specific symptoms, and the diagnosis can be challenging. While the most common etiology is neoplasm, intussusception also occurs in bowel motility disorder such as after cannabis use. Although this case report illustrates intussusception PoCUS findings, these should nevertheless be integrated into the clinical picture and CT-scan should remain the gold standard complementary examination in case of a suspected bowel obstruction.

Colonoscopy-assisted laparoscopic wedge resection for a large symptomatic colonic lipoma.

A colonic lipoma is an uncommon lesion that is linked with clinical symptoms in only a small portion of patients. Patients with large lipomas are often referred for major surgery, which is associated with significant morbidity and mortality. In this case, we described a female patient with recurrent episodes of gastrointestinal blood loss, abdominal pain and colocolic intussusceptions due to a large, lumen-filling, obstructive lipoma in the splenic flexure. On abdominal CT, a lesion of 3.6 cm was visualised with a fat-like density without solid components. Considering its benign nature, we intended to preserve the colon by deroofing the upper part of the lesion and then performing a colonoscopy-assisted laparoscopic wedge resection. During reassessment, auto-amputation of part of the lesion was observed, most likely as a result of long-lasting mechanical effects, which made it possible to perform solely a wedge resection with an excellent outcome.

Jejunojejunal intussusception induced by a gastrointestinal stromal tumor: a case report and literature review.

Intussusception is defined as the invagination of a proximal segment of the bowel into the adjoining or distal segment. In most adults with intussusception, there is a demonstrable lead point with a definite pathologic abnormality. The clinical features of intussusception include chronic intermittent abdominal pain, nausea and vomiting, constipation, and a palpable abdominal mass. The present case report describes a 62-year-old woman with a 2-week history of abdominal pain and 9-day history of vomiting. Clinical, imaging, and histologic evaluations revealed a jejunojejunal intussusception with a gastrointestinal stromal tumor as the lead point. A gastrointestinal stromal tumor should be considered as a possible lead point in adult patients with intussusception. The implication of reducing the intussusception prior to tumor resection requires further evaluation in view of the risk of venous embolism, including direct spread of malignant cells, in cases involving a large polypoid mass with a necrotic surface that extends to the serosa as shown by intraoperative examination. Accordingly, the rationale for adjuvant therapy with imatinib also requires further evaluation.

A POCUS-first pathway to streamline care for children with suspected ileocolic intussusception.

OBJECTIVES: As point-of-care ultrasound (POCUS) has emerged as a valuable tool for intussusception screening, this quality improvement study aimed to implement a "POCUS-first" pathway in a Pediatric Emergency Department (ED) to streamline workflow and expedite care for children with suspected intussusception. METHODS: This was a prospective analysis of children diagnosed with ileocolic intussusception in a Pediatric ED between June 2022 and June 2023. The study compared the "POCUS-first" cohort with the group receiving only radiology-performed ultrasound. Key outcomes included physician initial assessment to radiology-performed US time and physician initial assessment to reduction time. Continuous improvement efforts incorporated pediatric emergency medicine physician training, education, and pathway dissemination through plan-do-study-act cycles. RESULTS: The study included 29 patients in the "POCUS-first" pathway group and 70 patients in the non-POCUS group. The "POCUS-first" pathway demonstrated a significantly shorter physician initial assessment to reduction time compared to the non-POCUS group (170.7 min vs. 240.6 min, p = 0.02). Among non-transferred patients, the "POCUS-first" group also had a significantly shorter emergency department length of stay (386 min vs. 544 min, p = 0.047). CONCLUSIONS: Implementation of a "POCUS-first" pathway for managing ileocolic intussusception led to notable improvements in process efficiency. The shorter physician initial assessment to reduction time highlights the potential for expedited decision-making and intervention. These study findings support the potential of this pathway to optimize the management and outcomes of children with ileocolic intussusception.

RéSUMé: OBJECTIFS: Comme l'échographie au point de soin (POCUS) est devenue un outil précieux pour le dépistage de l'intussusception, cette étude d'amélioration de la qualité visait à mettre en œuvre une voie "POCUS-first" dans un service d'urgence pédiatrique (ED) rationaliser le flux de travail et accélérer les soins aux enfants présentant une intussusception suspectée. MéTHODES: Il s'agissait d'une analyse prospective des enfants diagnostiqués avec une intussusception iléo-colique dans un DE pédiatrique entre juin 2022 et juin 2023. L'étude a comparé la cohorte "POCUS-first" avec le groupe recevant uniquement des ultrasons radiologiques. Les principaux résultats comprenaient l'évaluation initiale par le médecin du temps de radiologie effectué aux États-Unis et l'évaluation initiale par le médecin du temps de réduction. Les efforts d'amélioration continue ont incorporé la formation, l'éducation et la diffusion des parcours des médecins en médecine d'urgence pédiatrique par le biais de cycles de plan-do-study-act. RéSULTATS: L'étude a inclus 29 patients dans le groupe "POCUS-first" et 70 patients dans le groupe non-POCUS. La voie "POCUS-first" a démontré une évaluation initiale significativement plus courte du temps de réduction par rapport au groupe non POCUS (170,7 minutes vs. 240,6 minutes, p = 0,02). Parmi les patients non transférés, le groupe "POCUS-first" a également eu une durée de séjour à l'urgence significativement plus courte (386 minutes vs. 544 minutes, p = 0,047). CONCLUSIONS: La mise en œuvre d'une voie "POCUS-first" pour gérer l'intussusception iléo-colique a conduit à des améliorations notables de l'efficacité des processus. L'évaluation initiale plus courte du médecin pour réduire le temps met en évidence la possibilité d'une prise de décision et d'une intervention accélérée. Les résultats de cette étude confirment le potentiel de cette voie pour optimiser la prise en charge et les résultats des enfants atteints d'intussusception iléo-colique.

[Ileo-colic intussusception in adult secondary to a large neoplasia of the lower caecal fundus]. / L'image du mois. Invagination iléo-colique chez l'adulte secondaire à une volumineuse néoplasie du bas-fond caecal.

Intussusception is rare in adults, accounting for 1 to 5 % of mechanical bowel obstructions. It is due to pathologic lead point within the bowel which is malignant in up to 77 % of cases. Benign lesions may also be responsible for intussusception (polyp, Meckel diverticulum). The lead point is pulled forward by normal peristaltism, prolapsing the affected segment of bowel into another segment. The most common presentation in adults is intermittent abdominal pain and bowel obstruction (nausea, vomiting, inability to pass gas or stools). Abdominal scanner is the key exam for the diagnosis and the treatment is always surgical resection.

Les invaginations grêles et coliques sont rares chez l'adulte, représentant 1 à 5 % des causes d'obstruction digestive mécanique. Elles sont le plus souvent causées par une masse intra-digestive, le péristaltisme entraînant un prolapsus du segment malade vers un segment intestinal adjacent. Elles sont généralement le reflet d'une pathologie maligne du tube digestif (tumeur maligne découverte dans plus de 77 % des cas), mais il peut également exister des causes béniqnes (polype, diverticule de Meckel, adénopathie) . Elles se manifestent sous forme de douleurs abdominales et d'occlusion (nausées, vomissements, arrêt des selles et des gaz). Le scanner abdominal est l'examen de choix pour poser le diagnostic. Le traitement est toujours une résection chirurgicale.

Intestinal intussusception as a postoperative complication of gastric bypass.

The gold standard for bariatric surgery is the laparoscopic gastric bypass, which consists in forming a small gastric pouch and a Roux-en-Y anastomosis. We present the case of a 41-year-old female who underwent a laparoscopic gastric bypass 8 years prior to her admission to the emergency room, where she arrived complaining of severe and colicky epigastric abdominal pain. The abdominal computed tomography showed a jejuno-jejunal intussusception, for which the patient underwent urgent exploratory laparotomy with intussusception reduction. Intestinal intussusception is a possible postoperative complication of a Roux-en-Y gastric bypass.

El Método de referencia en la cirugía bariátrica es el bypass gástrico laparoscópico, que consiste en la creación de una bolsa gástrica pequeña, anastomosada al tracto digestivo mediante una Y de Roux. Presentamos el caso de una mujer de 41 años con el antecedente de un bypass gástrico laparoscópico realizado 8 años antes, quien ingresó al servicio de urgencias refiriendo dolor abdominal grave. La tomografía computarizada abdominal evidenció una intususcepción a nivel de la anastomosis yeyuno-yeyuno, por lo que se realizó una laparotomía exploradora con reducción de la intususcepción. Se debe considerar la intususcepción intestinal como complicación posoperatoria de bypass gástrico.

Colonic intussusception after endoscopic mucosal resection successfully managed by endoscopic procedure.

Adult-onset intussusception, particularly associated with colonoscopy, is extremely rare. A 78-year-old man, referred to our hospital for colonic endoscopic mucosal resection (EMR), experienced subsequent dull abdominal pain, as well as elevated peripheral blood leukocytosis and C-reactive protein levels. Abdominal computed tomography (CT) revealed a colocolonic intussusception at the hepatic flexure. Emergency colonoscopy revealed ball-like swollen mucosa distal to the EMR site of the ascending colon. The mucosa was intact without necrosis. The endoscopic approach was able to temporarily release the intussusception. A transanal drainage tube was inserted through the endoscope to prevent relapse. Both CT and colonoscopy showed release of the intussusception. Our case underscores the importance of considering colocolonic intussusception in post-colonoscopy abdominal pain, advocating for endoscopic management after excluding mucosal necrosis.

Roux-en-Y retrograde intussusception: surgical reconstruction via sequential isoperistaltic side-to-side anastomoses.

Intussusception following Roux-en-Y gastric bypass is a rare, potentially life-threatening complication. Patients present with intermittent obstructive symptoms, and the diagnosis is made on imaging. Treatment is surgical considering the high likelihood of non-operative failure, strangulation, incarceration, perforation and concern for malignancy. We present the case of a woman in her 60s with a history of Roux-en-Y gastric bypass who presented with retrograde jejunojejunal intussusception at the distal Roux anastomosis. She proceeded to the operating room for complete anastomotic resection with reconstruction of three blind ends via two sequential isoperistaltic anastomoses. She progressed appropriately throughout her hospitalisation and was discharged on postoperative day 5 without recurrence. While intussusception in Roux-en-Y anatomy has been previously described, a literature review yielded sparse results in detailing its surgical correction. We highlight our unique surgical approach of jejunojejunal anastomotic resection with the creation of sequential isoperistaltic side-to-side anastomoses.

A case of intestinal intussusception with unique hemorrhagic polyps due to AL amyloidosis and excessive anticoagulation.

Most adult intussusceptions are secondary to various pathological conditions that serve as a lead point. Because of their serious nature, intussusceptions often require emergency surgery. We report a surgical case of amyloidosis associated with intussusception, probably due to polypoid protrusions and bleeding tendencies. An 80-year-old man with abdominal pain was suspected of having jejunal intussusception on computed tomography. He had been prescribed warfarin for atrial fibrillation, and excessive anticoagulation was observed with a prolonged prothrombin time/international normalized ratio of 5.44 at presentation. After the excessive anticoagulation was resolved, emergency surgery was performed. The intussuscepted jejunum was resected, and a 7 cm long dark-red pedunculated polyp was identified as the lead point, which was accompanied by multiple small pedunculated polyps. Histopathological examination showed that these were all hemorrhagic polyps. Amyloid depositions were observed in the muscularis mucosae, submucosa, and the walls of the blood vessels. Immunohistochemical analysis revealed immunoglobulin light chain amyloidosis. This case is informative to discuss the clinical sequelae of gastrointestinal amyloid deposition.

Yield of abdominal radiographs in children with suspected intussusception; rate of pneumoperitoneum and other abdominal pathology.

OBJECTIVES: Ultrasound is the criterion standard imaging modality for the diagnosis of intussusception. However, to our knowledge the utility of abdominal radiographs to concurrently screen for pneumoperitoneum or other abdominal pathology that could have a similar presentation has not been studied. Our institutional protocol requires the performance of AP supine and left lateral decubitus views of the abdomen prior to ultrasound evaluation for intussusception, providing an opportunity to examine the yield of abdominal radiographs in this setting. Our primary objective was to determine the rate of pneumoperitoneum on screening abdominal radiographs in children undergoing evaluation for intussusception. Our secondary objective was to determine the rate that other clinically significant pathology is found on these screening abdominal radiographs. METHODS: We performed a retrospective chart review of all patients under 6 years of age who had any imaging ordered in our large urban pediatric emergency department to evaluate for suspected intussusception during the calendar years 2018-2020. RESULTS: 1115 patient encounters met our inclusion criteria. Among 1090 who had screening abdominal radiographs, 82 (8%) had findings concerning for intussusception. Of those not concerning for intussusception, 635 (58%) were read as normal, 263 (24%) showed moderate to large stool burden, 107 (10%) showed generalized bowel distention, and 22 (2%) showed abnormal gastric distention. Individually the remainder of all other findings compromised <1% of encounters and included radiopaque foreign body (8), intraabdominal calcification (4), pneumonia/effusion (3), pneumatosis intestinalis, abdominal mass (2), diaphragmatic hernia (1), rib fracture (1), appendicolith (1), feeding tube malposition (1), and bowel wall thickening (1). In one encounter the patient had a bowel perforation with pneumoperitoneum present secondary to ingestion of multiple magnets. CONCLUSIONS: Our study indicates that radiograph-detected pneumoperitoneum is rare in children with suspected intussusception. Constipation is the most common abnormal finding on screening radiographs. Other findings occur in approximately 15% of total cases, some of which require further workup.

Small bowel intussusception - aetiology & management.

PURPOSE OF REVIEW: Adult small bowel intussusception (SBI) differs in incidence, symptomatology and management from the more commonly encountered paediatric intussusception. This review spans across the multitude of causes of adult SBI, and summarises the diagnostic work-up and management options according to recent literature. RECENT FINDINGS: There has been an increase in use of small bowel capsule endoscopy and point-of-care ultrasound for the diagnosis of acute adult SBI. SUMMARY: A high degree of suspicion of a malignant cause of SBI is required in the adult population. Alarm clinical features include weight loss, history of malignancy, and iron deficiency anaemia. CT remains the gold standard imaging technique as it may identify the lead point and thus aid in endoscopic or surgical management. If malignancy is excluded and no lead point is identified, serology and histology may be helpful to look for inflammatory, infective and autoimmune aetiology.

Enteroenteric intussusception caused by a small bowel metastatic cutaneous melanoma.

Unlike in children, intussusception is very rare in adults and accounts for only 1% of ileus in that population. While intussusception in children is most often idiopathic, in adults the cause of intussusception in most cases is tumor and most often metastatic adenocarcinoma. It is an extremely rare phenomenon for intestinal melanoma metastasis to be the cause of intussusception and has been described in the literature so far only in a limited number of case reports. 41-year-old female patient was admitted to the emergency department with a clinical picture of ileus. The patient had a melanoma excision on her back five years ago, for which chemotherapy and radiotherapy were carried out. An MSCT of the abdomen was performed, which indicated an obstructive ileus of the small intestine with a typical sign of intussusception (target sign). Upon explorative laparotomy enteroenteric intussusception was found with an invaginated segment of the ileum in a length of about 20 cm. When the intussuscepted segment was reduced, a black tumor the size of a plum was verified as a leading point. Histological analysis indicated metastatic cutaneous melanoma with foci of melanocytes underneath normal intestinal epithelium.

Intussusception reduction methods in daily practice-a survey by the European Society of Paediatric Radiology Abdominal Imaging Taskforce.

BACKGROUND: Image-guided intussusception reduction has been practised internationally for many decades. The use of different modalities, delayed repeat attempts, and sedation/anaesthesia are unknown. OBJECTIVE: To survey the practice of image-guided intussusception reduction. MATERIALS AND METHODS: A 20-point questionnaire created by the European Society of Paediatric Radiology (ESPR) Abdominal Imaging Taskforce was distributed via the ESPR members' mailing list and shared on social media between 28 March and 1 May 2023. RESULTS: There were 69 responses from 65 worldwide institutions, with a mean of 18 intussusception reductions performed per year: 55/69 (80%) from 52 European institutions and 14/69 (20%) from 13 institutions outside of Europe. European centres reported using 19/52 (37%) fluoroscopy, 18/52 (35%) ultrasound, and 15/52 (28%) a mixture of both, with 30/52 (58%) offering a delayed repeat at 15 min to 24 h. Non-European centres reported using 5/13 (39%) fluoroscopy, 6/13 ultrasound (46%), and 2/13 (15%) a mixture of both, with 9/13 (69%) offering a delayed repeat attempt. Sedation or analgesia was used in 35/52 (67%) of European and 2/13 (15%) non-European institutions. CONCLUSION: There is wide variation in how image-guided intussusception reduction is performed, and in the use of sedation/anaesthesia.

Multiple enteric muco-submucosal elongated polyps causing intussusception.

A 20-year-old woman presented to our hospital with abdominal pain. Abdominal computed tomography revealed multiple masses in the upper jejunum, which were suspected as lipomas. Partial resection of the small intestine, including the masses, was performed on the same day due to intussusception secondary to the masses. Pathological examination revealed that the masses consisted of mucosa and edematous submucosa with multiple dilated blood vessels and lymphatic ducts without muscularis propria. The masses were diagnosed as multiple muco-submucosal elongated polyps (MSEP), a type of non-neoplastic polyp. MSEP was originally named colonic MSEP, but with the development of endoscopic techniques and imaging tests, similar polyps have been reported to occur not only in the colon but also in the entire intestinal tract. In this case, multiple MSEPs in the upper jejunum caused intussusception. As reported cases of multiple lesions causing intussusception are few, our case may help to clarify the pathogenesis of this disease.