The role of computed tomography in modern paediatric uroradiology

Maudgil, David; McHugh, Kieran

doi:10.1016/s0720-048x(02)00115-8

Cited by 25 publications

(39 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A specific diagnosis can be made in almost all cases if the mass contains fat thus measuring less than 20 Hounsfield units (Fig. 1b) [1,3,9]. Vascular elements within may enhance after intravenous contrast, thus making density measurements more difficult; therefore, if the diagnosis is suspected, initial unenhanced scans are recommended [10].…”

Section: Benign Tumoursmentioning

confidence: 99%

“…Imaging may now even offer essential information regarding tumour entity; however, only some tumours can reliably be diagnosed purely based on imaging features, and histology remains irreplaceable in establishing the final diagnosis. The various imaging features of renal masses and their implication for modern surgery have extensively been described in various review articles and book chapters [1,2,3,4,5,6,7,8,9,10,11,12]. There are many different paediatric renal tumours, with a group of the benign tumours (e.g.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Imaging of renal tumours in infancy and childhood

Riccabona

2003

Eur Radiol

View full text Add to dashboard Cite

There is a large range of benign and malignant renal neoplasms. This article lists the most benign, indeterminate and malignant renal tumours that occur during infancy and childhood. It briefly describes the most important entities, including their imaging features, and important complications. Differential diagnosis and pitfalls are discussed, and a brief suggestion for a standardised imaging algorithm is proposed. Although modern imaging techniques, including colour Doppler sonography, helical or multidetector CT, and MR have significantly improved imaging potential, the definite diagnosis on tumour entity still is established only by histology.

show abstract

Section: Benign Tumoursmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Imaging of renal tumours in infancy and childhood

Riccabona

2003

Eur Radiol

View full text Add to dashboard Cite

show abstract

“…The left size was most affected (p < 0.05). The patients' age at the moment of the CT scan was slightly higher than reported in the literature for the diagnosis of WT (7,9) . Considering that some patients underwent CT scan after chemotherapy, probably such a difference is not real, since some CT scans were performed few weeks after the diagnosis.…”

Section: Discussionmentioning

confidence: 58%

“…Considering that some patients underwent CT scan after chemotherapy, probably such a difference is not real, since some CT scans were performed few weeks after the diagnosis. The same is applied to the median of the largest tumor diameter, which has shown to be smaller than previously described (9,10) . In the same way, the utilization of chemotherapy prior to CT scan in many patients may indicate that, at the diagnosis, some of the described characteristics do not necessarily correspond to those of tumors.…”

Section: Discussionmentioning

confidence: 99%

Local behavior and lymph node metastases of Wilms' tumor: accuracy of computed tomography

Silva

2014

Radiol Bras

View full text Add to dashboard Cite

ResumoObjective: To evaluate the accuracy of computed tomography for local and lymph node staging of Wilms' tumor. Materials and Methods: Each case of Wilms' tumor was evaluated for the presence of abdominal lymph nodes by a radiologist. Signs of capsule and adjacent organ invasion were analyzed. Surgical and histopathological results were taken as the gold standard. Results: Sensitivity was 100% for both mesenteric and retroperitoneal lymph nodes detection, and specificity was, respectively, 12% and 33%, with positive predictive value of 8% and 11% and negative predictive value of 100%. Signs of capsular invasion presented sensitivity of 87%, specificity of 77%, positive predictive value of 63% and negative predictive value of 93%. Signs of adjacent organ invasion presented sensitivity of 100%, specificity of 78%, positive predictive value of 37% and negative predictive value of 100%. Conclusion: Computed tomography tumor showed low specificity and low positive predictive value in the detection of lymph node dissemination. The absence of detectable lymph nodes makes their presence unlikely, and likewise regarding the evaluation of local behavior of tumors.Keywords: Computed tomography; Wilms' tumor; Staging.Objetivo: Avaliar a acurácia da tomografia computadorizada no estadiamento local e linfonodal de pacientes com tumor de Wilms. Materiais e Métodos: Um radiologista avaliou a presença de linfonodos abdominais em cada caso. Sinais de invasão capsular e de órgão adjacente foram analisados. Resultados cirúrgicos e histopatológicos foram tomados como padrão ouro. Resultados: A sensibilidade da detecção de linfonodos mesentéricos e retroperitoneais foi 100% (ambos) e a especificidade foi 12% e 33%, respectivamente, com valores preditivos positivos de 8% e 11% e negativos de 100% (ambos). Sinais de invasão capsular apresentaram sensibilidade de 87%, especificidade de 77% e valores preditivos positivo de 63% e negativo de 93%. Invasão de órgão adjacente foi diagnosticada com sensibilidade de 100%, especificidade de 78% e valores preditivos positivo de 37% e negativo de 100%. Conclusão: A tomografia computadorizada mostrou baixa especificidade e valor preditivo positivo na detecção de disseminação linfonodal. Ausência de linfonodos detectáveis tornou a disseminação improvável, assim como sinais de invasão local.

show abstract

“…The unenhanced "stone uro-CT" as commonly used in adults is reserved for complicated cases, where all other imaging cannot suffi ciently reveal all therapeutically necessary aspects (Smergel et al 2001 ;Strouse et al 2002 ;Maudgil and McHugh 2002 ;Akay et al 2006 ). This is not only for radiation protection but also because the small concrements with little calcifi cation (as more often observed in children) and less fat surrounding the child's ureter (thus reducing contrast and obviating ultralow-dose CT protocols) may not be visualized.…”

Section: Urolithiasismentioning

confidence: 99%

The Pediatric Kidney

Riccabona

2014

Radiological Imaging of the Kidney

View full text Add to dashboard Cite

Children are not small adults. In the urinary tract, particularly, there are many conditions that are more or less specifi c to children which need early and reliable diagnosis in order to provide proper treatment to prevent renal damage and severe long-term sequelae such as hypertension or renal insuffi ciency. This is particularly important for all congenital urinary tract malformations and also for many other congenital renal conditions -these are often detected prenatally and, after birth, need prompt and reliable diagnostic workup at minimal invasiveness. Additionally, even in conditions that are the same or similar to adults, the specifi c needs and conditions in childhood require different imaging approaches and algorithms, partially because of each of the following reasons: the child's higher sensitivity to radiation, different physiology, different size and imaging appearance, as well as different potential of the various imaging techniques. These differences are outlined, focusing on some important diseases and queries such as congenital hydronephrosis and obstructive uropathy, impact of vesicoureteral refl ux on the kidney, imaging in infants with urinary tract infection, childhood urolithiasis and nephrocalcinosis, pediatric renal masses, as well as other miscellaneous renal conditions that may manifest in the child and indicate imaging. Additionally, specifi c needs for adapting and applying the various imaging techniques in childhood are discussed.

show abstract

The role of computed tomography in modern paediatric uroradiology

Cited by 25 publications

References 29 publications

Imaging of renal tumours in infancy and childhood

Imaging of renal tumours in infancy and childhood

Local behavior and lymph node metastases of Wilms' tumor: accuracy of computed tomography

The Pediatric Kidney

Contact Info

Product

Resources

About