Abdominal catheter-induced intussusception following renal transplantation in two pediatric recipients: 2 cases report and literature review
Case Report

Abdominal catheter-induced intussusception following renal transplantation in two pediatric recipients: 2 cases report and literature review

Pengfei Gao1,2#^, Longshan Liu1#^, Zhichong Zhang2^, Lingling Xu3^, Chenglin Wu1^, Qian Fu1^, Jun Li1^, Changxi Wang1,4,5^

1Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; 2Department of Pediatric Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; 3Department of Pediatrics, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China; 4Guangdong Provincial Key Laboratory of Organ Donation and Transplant Immunology, Guangzhou, China; 5Guangdong Provincial International Cooperation Base of Science and Technology (Organ Transplantation), Guangzhou, China

Contributions: (I) Conception and design: P Gao, L Liu; (II) Administrative support: J Li, C Wang; (III) Provision of study materials or patients: C Wu, Q Fu, J Li; (IV) Collection and assembly of data: Z Zhang, L Xu; (V) Data analysis and interpretation: P Gao, L Liu, Z Zhang; (VI) Manuscript writing: All authors; (VII) Final approval of manuscript: All authors.

#These authors contributed equally to this work.

^ORCID: Pengfei Gao, 0000-0002-6592-2861; Longshan Liu, 0000-0003-2013-8827; Zhichong Zhang, 0000-0002-6591-3076; Lingling Xu, 0000-0001-9074-6145; Chenglin Wu, 0000-0003-4562-0281; Qian Fu, 0000-0002-8763-8212; Jun Li, 0000-0002-7079-4139; Changxi Wang, 0000-0002-1282-3341.

Correspondence to: Jun Li; Changxi Wang. Organ Transplant Center, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan Second Road, Yuexiu District, Guangzhou 510080, China. Email: rexlee010207@163.com; wangchx@mail.sysu.edu.cn.

Background: Intussusception is a frequent abdominal emergency in the pediatric population when the proximal bowel invaginates into the distal bowel. However, catheter-induced intussusception has not previously been described in pediatric renal transplant recipients, and the risk factors need to be investigated.

Case Description: We report 2 cases of post-transplant intussusception which were caused by abdominal catheters. Case 1 experienced ileocolonic intussusception 3 months after renal transplantation and presented with intermittent abdominal pain; the intussusception was successfully managed using air enema. However, this child experienced a total of 3 episodes of intussusception within 4 days, which discontinued only after removal of the peritoneal dialysis catheter. No further intussusception recurrence was observed and the patient’s intermittent pain disappeared during the follow-up. Case 2 developed ileocolonic intussusception 2 days after renal transplantation and presented currant jelly stools. The intussusception was completely irreducible until the intraperitoneal drainage catheter was eliminated; the patient discharged normal feces during the following days. A search in the databases of PubMed, Web of Science, and Embase yielded 8 similar cases. Our 2 cases had a younger age at disease onset than those retrieved in the search, and abdominal catheter was revealed as a lead point. Possible leading points of the 8 previously reported cases included post-transplant lymphoproliferative disorder (PTLD), acute appendicitis, tuberculosis, lymphocele, and firm adhesions. We noted that our cases were managed successfully with nonoperative treatment, whereas the 8 reported cases underwent surgical intervention. All of the 10 cases of intussusception occurred after renal transplantation and showed that intussusception had been induced by a lead point.

Conclusions: Our 2 cases implied that abdominal catheter could be a lead point to induce intussusception, especially in pediatric recipients with abdominal disorder. This experience may be applicable to other surgeries involving indwelling abdominal catheters in children. Health practitioners should consider this pathologic lead point and avoid serious consequences when intussusception occurs.

Keywords: Children; renal transplantation; intussusception; catheter; case report

Submitted Jun 05, 2022. Accepted for publication Dec 22, 2022. Published online Feb 14, 2023.

doi: 10.21037/tp-22-257

Highlight box

Key findings

• Abdominal catheter can be a lead point to induce intussusception.

What is known and what is new?

• Postoperative intussusception is rare and the risk factors need to be investigated.

• Abdominal catheter can induce intussusception as a lead point.

What is the implication, and what should change now?

• Postoperative intussusception is rare and the risk factors need to be investigated.

• Health practitioners should consider catheter as a pathologic lead point to induce intussusception if an acute abdominal disorder is observed in children.

Introduction

Intussusception is the most common cause of acute intestinal obstruction in children (1). The most prevalent kind of intussusception is idiopathic and ileocolonic intussusception (1,2), which has an incidence of 18–56 per 100,000 (3). Delayed diagnosis of intussusception may induce severe bowel obstruction, resulting in abdominal distension, dehydration, intestinal necrosis, perforation, shock, and even death (4,5). Postoperative intussusception (POI) is a rare and severe condition reported after treatment for Merkel’s diverticulum, retroperitoneal tumor, and megacolon in children (6). Pediatric intussusception following renal transplantation is scantily reported; however, the risk factors need to be investigated. Herein, we report 2 cases of post-transplant intussusceptions which were triggered by peritoneal dialysis catheter and intraperitoneal drainage catheter, respectively. We proposed that catheter can be a leading point to induce intussusception, which may have been overlooked. This experience would contribute to discerning the risk factors for POI. We present the following article in accordance with the CARE reporting checklist (available at https://tp.amegroups.com/article/view/10.21037/tp-22-257/rc).

Case presentation

All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee(s) and with the Declaration of Helsinki (as revised in 2013). Written informed consent was obtained from the patients’ parents for publication of this case report and accompanying images. Copies of the written consent are available for review by the editorial office of this journal.

Case 1

A 4.6-year-old girl with end-stage renal disease (ESRD) from nephrotic syndrome (NS) underwent peritoneal dialysis catheterization and started dialysis on 17 April 2018. She received allograft renal transplantation via an extraperitoneal approach on 16 March 2019. During the post-transplant period, the maintenance immunosuppressants included tacrolimus, mycophenolate mofetil (MMF), and prednisone. She was admitted on 17 June 2019 with intermittent pain of a 1-week duration. Her self-reported symptoms did not include nausea, vomiting, diarrhea, or abdominal distension. On admission, physical examination revealed a flat abdomen with a peritoneal dialysis catheter well fixed in the right lower quadrant.

Blood routine test revealed the following: leukocytes 4.83×109/L, hemoglobin 118 g/L, and creatinine concentration 106 µmol/L, and she returned a weak positive for urine protein. In addition, here leukocytes were measured as 165×106/L in the drainage fluid. Abdominal plain film showed a peritoneal dialysis tube running in the ileocecal part and no clear signs of intestinal obstruction. Ultrasound indicated multiple concentric rings on her right abdomen. Ileocolonic intussusception was diagnosed. The intussusception was successfully managed using air enema (Figure 1). However, the child experienced 2 recurrent intussusceptions within the following 3 days. Meckel’s scan was conducted after the third successful reduction, and the result was negative. Due to recurrent episodes of intussusception, peritoneal dialysis catheter removal was performed, and no further recurrence was observed. The patient’s intermittent pain subsequently disappeared. The child’s transplanted kidney function was constantly monitored. At the end of follow-up (36 months after renal transplantation), creatinine concentration was 37 µmol/L, and urine protein was negative.

Figure 1 Therapeutic air enema of case 1. (A) Air was introduced through a tube (bold black arrow), ileocolonic intussusception (bold white arrow) proximal to the peritoneal dialysis catheter (thin black arrow). (B) The intussusception was pushed back into the terminal ileum area.

Case 2

A 1.8-year-old boy was diagnosed with polycystic kidney disease (PKD) in the first month of life. Genetic testing revealed PKD1 gene mutation and ultrasonography showed bilateral polycystic kidneys. The patient was diagnosed with ESRD at age 1.3 years and had displayed postnatal growth delays. He (weight: 11.0 kg, height: 80.0 cm) was admitted and received allogeneic renal transplantation via a transperitoneal approach on 8 February 2022. During the transplant procedure, intraperitoneal and perirenal drainage catheters were placed. The maintenance immunosuppressants included tacrolimus, MMF, and prednisone. He produced currant jelly-like stools on 10 February 2022 without vomiting or abdominal distension.

On examination, no abdominal mass or signs of peritonitis were found. The tip of the abdominal drainage catheter was palpated in the right lower quadrant. Blood leukocytes were 3.42×109/L, hemoglobin was 88 g/L, and serum creatinine was 415 µmol/L. Ultrasound revealed an epigastric mass of approximately 8.0×3.2 cm in size presenting a concentric circle sign. Ileocolonic intussusception was diagnosed. Repeated air enema reductions were unsuccessful, even with repeated massaging of the ileocecal section. The intussusception was finally managed when the abdominal drainage catheter was removed (Figure 2). The child discharged normal feces the following day, and intussusception never recurred. At 3 months after renal transplantation, his urea level was 7.4 mmol/L and serum creatinine was 30 µmol/L. Figure 3 presents the timeline of key time points, clinical manifestations, interventions, and follow-ups of the 2 cases.

Figure 2 Therapeutic air enema of case 2. (A) Air was introduced in the colon through a tube (bold black arrow), intussusception was seen in the colonic hepatic flexure (bold white arrow) in proximity to the drainage catheter (thin black arrow), the ureteral stent was in place (thin white arrow). (B) The intussusception was completely reducible when the drainage catheter was removed, and air refluxed to the distal small bowel.
Figure 3 Timeline of key time points, clinical manifestations, interventions, and follow-ups of the two cases. NS, nephrotic syndrome; ESRD, end-stage renal disease; RT, renal transplantation; PD, peritoneal dialysis; PKD, polycystic kidney disease.

Literature review

A literature search using the keywords “renal/kidney transplantation and intussusception” in the PubMed, Web of Science, and Embase databases was conducted up to 25 February 2022. Among all the English literature, a total of 16 articles were retrieved after excluding duplicate reports. A total of 8 cases of intussusception following renal transplantation in humans had been reported in the above-mentioned databases (7-14), and 2 patients (25%) received 2 renal transplantations. Of the 8 patients, 5 (62.5%) were male and 3 (37.5%) were female, and the mean age was 37 years old. Only Beek et al. reported a case of small bowel intussusception following renal transplantation in an 11-year-old child (14). Most cases presented with bowel obstruction. Intussusception occurred more than 3 months after renal transplantation. A total of 5 cases (62.5%) occurred in the small bowel, 2 (25%) in the ileocecal region, and 1 (12.5%) in the colon. Lead points included post-transplant lymphoproliferative disorder (PTLD) in 3 patients (37.5%), and acute appendicitis, tubulovillous adenoma, tuberculosis, lymphocele, and firm adhesions each occurred in 1 patient (12.5%). All patients underwent surgeries, among whom 2 patients (25%) died, whereas 6 patients (75%) recovered uneventfully (Table 1).

Table 1

General data of 8 cases with intussusception after renal transplantation

Case Author/Ref. Age (year) Sex Symptom Time after renal transplantation Location of intussusception Leading point Type of reduction Outcome Geographic location
1 Akl et al. (7) 48 M Constipation, tenderness at right iliac region 14 years Ileocolic Acute appendicitis Surgery Recovered Egypt
2 Lee et al. (8) 23 F Not specific 7 years Small bowel PTLD Surgery Recovered GBR
3 Wassmer et al. (9) 59 F Septic shock 20 years (1st transplant); 7 years (2nd transplant) Small bowel Tubulovillous adenoma Surgery Died Switzerland
4 Atici et al. (10) 50 M Intestinal obstruction 15 years (1st transplant); 5 months (2nd transplant) Jejunojejunal PTLD Surgery Recovered Turkey
5 Mohapatra et al. (11) 27 M Fever, abdominal pain, diarrhea, mass 3 years Ileocolic Tuberculosis Surgery Died India
6 Alberici et al. (12) 19 M Acute abdominal pain 11 years Ileal PTLD Surgery Recovered Italy
7 Bury et al. (13) 59 F Bowel obstruction 3 months Colic Lymphocele Surgery Recovered Poland
8 Beek et al. (14) 11 M Colicky pain, bilious vomiting, abdominal distension 2 years Jejunal Firm adhesions Surgery Recovered Netherlands

M, male; F, female; PTLD, post-transplant lymphoproliferative disease.

Discussion

Intussusception is the second most common etiology of abdominal emergency after appendicitis in children (15). Idiopathic intussusception is the most common type in infants and young children. Secondary intussusception is caused by organic lesions, such as diverticula, polyps, tumors, and intestinal wall hematomas, which function as a lead point (1,2). PTLD is the most common cause of intussusception in adult kidney recipients (7,10). Here, we report 2 cases of intussusceptions in pediatric renal allograft recipients. At our center, only these 2 cases of POI occurred (460 pediatric renal transplantations were recorded and followed up), with an incidence of approximately 0.4%. To the best of our knowledge, we are the first to report catheter-induced intussusception in renal transplant recipients.

In previous literature, intussusceptions induced by feeding catheters have been reported (16-18). However, the exact mechanism of intussusception due to the involvement of catheter is not understood. Possible theories have been proposed: (I) tip of catheter acting as a pathologic leading point, (II) catheter-associated inflammatory reaction causing hypertrophy of the mucosa, which forms a leading point (19). Case 1 had proteinuria after renal transplantation due to recurrent primary kidney disease, the peritoneal dialysis catheter was retained in case of severe graft dysfunction. Recurrent intussusceptions occurred around the entrance point, and catheter-associated intraperitoneal infection was observed. In case 2, the catheter was displaced, the tip of the catheter shifted, and the intussusception was near the tip of the catheter.

As was seen in our case reports, the prevalent type of intussusception is ileocolonic intussusception. Age and duration of illness affect the clinical manifestations of ileocolic intussusception. Intussusception in younger children is characterized by bloody stools or intestinal obstruction, whereas in older children it is characterized by nonspecific abdominal pain (20). This is consistent with the presentations of our case report. Nevertheless, abdominal catheter as a pathologic lead point may be overlooked due to the lack of knowledge. Ultrasound is the preferred diagnostic method, for which the typical presentations include multiple concentric rings on transverse plane and the pseudo-kidney sign on longitudinal plane (21). However, ultrasound does not show all lead points, the need for further imaging examinations should be determined individually (22). As in our cases, catheters were not visible in the ultrasound images of intussusceptions after a thorough review. Although abdominal plain film may not reveal any abnormality, it helps to locate the catheter.

As it remains a challenging task to manage intussusception triggered by a lead point, enema reduction is recommended (22). Catheter-induced intussusception should be managed by changing the catheter. In case 1, intussusception was reducible without recurrence via pneumatic enema yet catheter removal was the premise. Renal transplantation is suggested to perform via transperitoneal approach in children weighing less than 20 kg and large kidney graft (23,24). As a drainage catheter is necessary, attention needs to be paid to its placement in this procedure. In addition, potential technologies and strategies are suggested: (I) management of catheter-associated intraperitoneal infection, (II) enteral nutrition is started after the recovery of intestinal function to avoid irregular bowel movements, and (III) selecting appropriate catheter size based on the recipient’s physique.

In this paper, we presented a novel lead point to induce intussusception. Given the severe complications resulting from delayed diagnosis and treatment, it is important to pay attention to this possibility. This finding may have significant clinical implications. It is reported that POI mostly occurs within 10 days after surgery in children, and the risk factors include surgical trauma, electrolyte imbalance, and tissue dehydration (6). Despite that we have only reported 2 cases of intussusception following renal transplantation, the experience aids our understanding of catheter as another risk factor for POI. POI is quite difficult to predict before surgery, and a delayed diagnosis may result in serious consequences; clinicians must not only be able to diagnose it swiftly, but also identify its risk factors. We hope that this article also raises attention in POI, especially when abdominal catheters are used. However, there was still a deficiency: although ultrasound confirmed intussusception in these 2 cases, the catheters were not visualized in the ultrasound images. Ultrasound does not reveal all lead points as stated previously. More cases are required to validate this point.

In conclusion, despite its rarity, if an acute abdominal disorder is observed in children following renal transplantation, intussusception should not be ignored. Catheter can be a lead point, no matter how long it has been placed. Ultrasound is capable of identifying intussusception, and abdominal plain films aid in the evaluation of catheters as a risk factor.

Acknowledgments

Funding: None.

Footnote

Reporting Checklist: The authors have completed the CARE reporting checklist. Available at https://tp.amegroups.com/article/view/10.21037/tp-22-257/rc

Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at https://tp.amegroups.com/article/view/10.21037/tp-22-257/coif). The authors have no conflicts of interest to declare.

Ethical Statement: The authors are accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved. All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee(s) and with the Declaration of Helsinki (as revised in 2013). Written informed consent was obtained from the patients’ parents for publication of this case report and accompanying images. Copies of the written consent are available for review by the editorial office of this journal.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0/.

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Cite this article as: Gao P, Liu L, Zhang Z, Xu L, Wu C, Fu Q, Li J, Wang C. Abdominal catheter-induced intussusception following renal transplantation in two pediatric recipients: 2 cases report and literature review. Transl Pediatr 2023;12(2):280-286. doi: 10.21037/tp-22-257

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