Calyceal diverticula in children: Imaging findings and presentations

Santiago, Y. Ochoa; Nebot, C. Sangüesa; Aliaga, Sara; Durbá, A. Serrano; López, P. Ortega

doi:10.1016/j.rxeng.2018.05.001

Cited by 7 publications

(18 citation statements)

References 15 publications

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“…The “cloud” or “polylobulated appearance” in renal US was mentioned recently by Ochoa Santiago et al as a feature to help in the diagnosis of calyceal diverticulum . It could be present in large diverticula; however, none of diverticula in the present study had this appearance.…”

Section: Discussionsupporting

confidence: 38%

“…Contrast‐enhanced studies in the excretory phase are used to diagnose calyceal diverticula because the key imaging finding is to demonstrate the passage of contrast to the renal cystic cavity because of communication with the renal collecting system . Among those studies, a CT scan in the excretory phase (CT urography) is the most commonly used imaging modality to confirm the existence of calyceal diverticula with 95% sensitivity . It has recently replaced the intravenous urography (IVU) due to its ability to provide valuable anatomic information, delineate the location of the diverticulum, and its relationship to the collecting system .…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, thin section three‐dimensional (3D) sequences can be used to demonstrate the infundibular channel between the calyceal diverticula and collecting system. Only a few case reports and reviews mention the use of MR urography in the diagnosis of calyceal diverticula . However, no studies that focus on the differentiation between calyceal diverticulum and simple renal cyst have been reported in the literature, as far as we are aware.…”

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confidence: 99%

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Differentiation of simple renal parenchymal cyst and calyceal diverticulum

Şahin

Sarıoğlu

Alaygut

et al. 2020

Pediatrics International

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Background: Calyceal diverticulum is the cystic eventration of the upper urinary tract within the renal parenchyma, which gives the first impression of a simple renal cyst and therefore can easily be misdiagnosed. We conducted a study to assess the role of static-fluid magnetic resonance (MR) urography in the differentiation of renal parenchymal cysts and calyceal diverticulum in comparison with focused renal ultrasonography (US). Methods: Focused renal US, static-fluid, and excretory MR urography studies of 45 children who were admitted to our pediatric nephrology department with a diagnosis of renal cyst were reviewed retrospectively. Excretory MR urography was accepted as gold standard for the diagnosis of calyceal diverticulum. Sensitivity and specificity of focused renal US and static fluid MR urography in the diagnosis of renal calyceal diverticulum were assessed. Interobserver agreement between three radiologists in the diagnosis of calyceal diverticulum on MRI was also evaluated. Results: The study included 29 patients (13 boys and 16 girls) aged between 6-18 years (mean 11.5 AE 4.1). Five calyceal diverticula and 24 solitary renal parenchymal cysts were diagnosed. The sensitivity and the specificity of focused renal US were 40% and 100% in the diagnosis of calyceal diverticulum. The sensitivity and the specificity of static-fluid MR urography were 100% and 91.6%, respectively. The degree of interobserver agreement was excellent for the diagnosis of diverticulum for static-fluid MR urography (j = 0.86, 95% CI: 0.71-1.00). Conclusions: Static-fluid MR urography can be successfully used in children for the differentiation of renal parenchymal cyst and calyceal diverticulum due to its high sensitivity and specificity, without exposing children to ionizing radiation or intravenous contrast agents.

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Section: Discussionsupporting

confidence: 38%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Differentiation of simple renal parenchymal cyst and calyceal diverticulum

Şahin

Sarıoğlu

Alaygut

et al. 2020

Pediatrics International

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confidence: 99%

“…A calyceal diverticulum is a urine-filled cystic lesion lined with transitional epithelium, which develops as the outpouching into the renal parenchyma and communicates with the upper collecting system via a narrow channel [1][2][3][4][5]. The etiology of a calyceal diverticulum is unclear [1,2]. The most common theory is a congenital factor of an embryologic origin, even though it may develop due to obstruction, infection, or trauma [1][2][3]5].…”

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confidence: 99%

Diagnostic imaging features of calyceal diverticulum in a cat

2021

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A seven-year-old, castrated male, Korean domestic shorthair cat was referred because of a kidney abnormality. Radiography revealed left renal agenesis and right kidney enlargement. Ultrasonography and computed tomography (CT) showed amorphous calcified materials in a cyst-like lesion of the right kidney. In the excretory phase of the CT images, the lesion was opacified with contrast materials, indicating communication with the collecting system. Based on these findings, the cat was diagnosed with a calyceal diverticulum. A calyceal diverticulum may cause various clinical symptoms related to the urinary system. The excretory phase of CT is useful for diagnosing a calyceal diverticulum.

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Approach to simple kidney cysts in children

Dell,

Hartung

2024

Pediatr Nephrol

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The finding of a simple kidney cyst in a child can pose a diagnostic and management challenge for pediatric nephrologists, urologists, and primary care providers. The reported prevalence varies from 0.22 to 1% in large ultrasonography-based series of more than 10,000 children each. The true prevalence, however, may be higher or lower, as factors such as variations in referral patterns, indications for ultrasonography, or technical considerations could impact prevalence rates. For many patients, simple kidney cysts may be found incidentally when imaging is performed for another indication. Although simple cysts can occur in children, they may also represent the first sign of autosomal dominant polycystic kidney disease (ADPKD) or other less common cystic kidney diseases. Definitive guidelines regarding the evaluation and monitoring of children with simple kidney cysts have not been established. The desire on the part of the practitioner and/or parents to establish a definitive diagnosis should be balanced with the cost and inconvenience of repeated imaging and visits with specialists. The goals of this review are to (1) outline the definition, epidemiology, clinical presentation, and natural history of simple kidney cysts in childhood; (2) describe clinical features that could suggest a diagnosis other than a simple kidney cyst; and (3) present a suggested framework for evaluating and monitoring of children with one or more simple kidney cysts. Graphical Abstract

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Calyceal diverticula in children: Imaging findings and presentations

Cited by 7 publications

References 15 publications

Differentiation of simple renal parenchymal cyst and calyceal diverticulum

Differentiation of simple renal parenchymal cyst and calyceal diverticulum

Diagnostic imaging features of calyceal diverticulum in a cat

Approach to simple kidney cysts in children

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