Bilateral retrorenal colon-a case report

Khaladkar, Sanjay M; Tomar, Shantanu Singh; Akshay, Alawadhi; Sehrawat, Vipul

doi:10.18203/2320-6012.ijrms20170680

Cited by 1 publication

(1 citation statement)

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“…1,8 Previous studies report prevalence of retro-renal colon in about 1-14% of the population with higher incidences observed in females, on the left side, in relation to the lower pole of the kidney and in the prone position of the patient which is preferred for PNL procedures. 9 Despite the infrequency of complications, sequelae after colon perforation are associated with significant morbidity and mortality and require not only conservative management but also open surgical intervention in patients with peritonitic and septic diseases. 6,8 Therefore, knowledge on the prevalence of a retrorenal colon and its relationship with the kidney is vital in preoperative planning and prevention of iatrogenic injury to the colon during PNL.…”

Section: Introductionmentioning

confidence: 99%

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

Kipkorir¹,

Cheruiyot²,

Ongidi³

et al. 2022

IJGM

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Background: This systematic review and meta-analysis aims to determine the prevalence of the retrorenal colon (RRC) and its implications in percutaneous nephrolithotomy with the overall objective of promoting the prevention of associated iatrogenic complications. Methods: A systematic search of literature was conducted on the electronic databases PubMed, ScienceDirect, and Hinari to identify studies eligible for inclusion. Search results were screened by title and abstract, and those potentially relevant were evaluated by full text. Studies were deemed eligible for inclusion if they reported clear extractable data regarding the prevalence of the retro-renal colon. A meta-analysis was completed using MetaX1 to calculate the pooled prevalence of the retro-renal colon. Sub-group analysis was performed based on geographical regions from which the studies originated, imaging modality, and patient position. Results: 174 records were screened and a total of 10 records included in the analysis with retrospective cohort studies being the most common study design. A male predominance was seen in most sample sizes that had reported data on gender demographics ranging from 41.5-62%. The most common imaging modality utilized was computerized tomography (CT) scan followed by ultrasound. The range of the unweighted prevalence of retro-renal colon across all studies that had absolute numbers reported was from 3.5-25%. One of the studies reported a colonic perforation rate of 0.3% in patients without CT images. Conclusion:The retro-renal colon is a relatively common finding with observed preponderance to females and left lateralization. The presence of RRC increases the likelihood of colon perforations while gaining percutaneous access to the kidney. Pre-procedural imaging can help detect its presence and choose an appropriate route of entry. USG and CT have both been found useful as a modality to pick up RRC.

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