Prevalence of the Retro-Renal Colon: A Systematic Review and Meta-Analysis with Implications for Percutaneous Nephrolithotomy

Kipkorir, Vincent; Cheruiyot, Isaac; Ongidi, Ibsen; Nyaanga, Fiona K; Neema, Bridget; Otieno, Elisha Harry; Baskaran, Roger R; Srichawla, Bahadar S; Biswas, Jyotirmoy; Dhali, Gopal Krishna; Dhali, Arkadeep

doi:10.2147/ijgm.s389682

Cited by 3 publications

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Global Needs and Barriers for Medical Research Education: Initiatives to Solve the Physician-Scientists Shortage

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Section: How To Make Editors and Scientists: An Ijms Initiativementioning

confidence: 99%

Global Needs and Barriers for Medical Research Education: Initiatives to Solve the Physician-Scientists Shortage

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Outcomes and complications of percutaneous nephrolithotomy as primary versus secondary procedure for kidney stones: a prospective cohort study

Sakly,

Khaldi,

Touati

et al. 2024

Annals of Medicine &Amp; Surgery

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Introduction: Currently, percutaneous nephrolithotomy (PCNL) is the gold standard of treatment for large renal stones. The high prevalence of urolithiasis is associated with a high recurrence rate increasing the risk of re-intervention. This study aimed to compare the effectiveness and complications of PCNL among patients with previous therapeutic interventions for renal stones. Methods: Between August 2018 and September 2023, 245 patients were prospectively enrolled in this study and who underwent PCNL for renal stones at our institution. We compared patients who had no previous renal surgery (group 1: n=171) with those who had a history of open renal surgery (group 2: n=45) or previous PCNL on the ipsilateral kidney (group 3: n=31). All patients underwent surgery in the Galdakao-modified Valdivia position. Data on stone characteristics and perioperative and postoperative parameters were collected. Technical features, success rates and morbidity were analyzed and compared between the groups. Results: The fluoroscopy time was significantly longer in the group of patients with previous open surgery than in groups 1 and 3 (161.47±52.44, 223.05±33.29, 172.27±30.51 sec, P<0.001). Similarly, the operative time was longer in group 2 (138.20±38.86 min, P<0.001). The immediate stone-free rates in groups 1, 2, and 3 were 74.8%, 72.1%, and 77.4%, respectively (P=0.945). At 1-month, these rates increased to 98.8%, 96.2% and 96.8%, respectively (P=0.857). No difference was detected between the groups in terms of complication rate. The average Hb variation was 1.08±0.82, 1.34±1.01 and 0.94±0.69 g/dl for groups 1, 2 and 3, respectively(P=0.082). Hospital stay was longer in group 2 than in groups 1 and 3 (2.17±1.03, 2.53±1.22, 1.88±1.00 days, P=0.07), respectively. Conclusion: PCNL in patients with a history of renal surgery was associated with longer fluoroscopy and operative time. However, the success and morbidity rates as a secondary procedure were similar to those of PCNL in patients with no previous intervention.

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Occurrence of Retrorenal Colon in the Indian Population – A Significant Finding from Urological Perspective

Jain,

Rastogi,

Aggarwal

et al. 2023

Acta Medica International

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Introduction: Ascending and descending coli normally are located anterolateral to kidneys. Retrorenal position of the colon has a reported prevalence of 10%–20% in the general population. Its occurrence is of significant while performing percutaneous nephrolithotomy (PNL) which is a routine management procedure for patients showing clinical disease associated with renal calculus. PNL in patients with retrorenal colon can lead to colonic perforation which is associated with significant morbidity and mortality related to septicemia, peritonitis, formation of abscess, and nephro-colic and/or colo-cutaneous fistulae. Hence, the preoperative information about the presence of retrorenal colon is essential for the prevention of surgical complications. Materials and Methods: Our retrospective study included patients who underwent computed tomography (CT)/magnetic resonance (MR) abdomen in our department of radiodiagnosis. All the scans were evaluated for the presence of retrorenal colon. The persistence of retrorenal colon was also observed with change in posture among those with prone scans. Results: The retrorenal colon was present in 130 out of 669 patients included in the study, with an occurrence rate of nearly 20%. Alteration in the position of retrorenal colon was noted with prone position in approximately 79%. Conclusion: The occurrence of retrorenal colon is high in the Indian population being approximately 20% without change with prone position in one-fifth. Thus, to reduce the risk of complication related to colonic perforation during PNL, all patients must be subjected to CT/MR abdomen to detect retrorenal colon followed by scan in the prone position, if retrorenal colon is present, to evaluate the alterations in colonic position with prone posture.

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Prevalence of the Retro-Renal Colon: A Systematic Review and Meta-Analysis with Implications for Percutaneous Nephrolithotomy

Cited by 3 publications

References 44 publications

Global Needs and Barriers for Medical Research Education: Initiatives to Solve the Physician-Scientists Shortage

Global Needs and Barriers for Medical Research Education: Initiatives to Solve the Physician-Scientists Shortage

Outcomes and complications of percutaneous nephrolithotomy as primary versus secondary procedure for kidney stones: a prospective cohort study

Occurrence of Retrorenal Colon in the Indian Population – A Significant Finding from Urological Perspective

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