Diagnostic value of 64‑slice spiral computed tomography imaging of the urinary tract during the excretory phase for urinary tract obstruction

Zhao, Di; Ge, Jia; Chen, Peng; Liu, Xin-Ding; Shu, Shengjie; Ling, Zaisheng; Fan, Tingting; Xiu-fen, Shen; Zhang, Jinling

doi:10.3892/etm.2017.5176

Cited by 3 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast to intravenous pyelography or retrograde pyelography, which is difficult to detect flattened growth or renal pelvic tumors with no obvious occupying effect, X-ray plain radiography can visualize most stones, but it is not significant for the diagnosis of renal pelvic cancer if there is no obvious calcification on the surface of the renal pelvis. When CT values within the renal pelvis or renal parenchyma are aberrant, the likelihood of a tumor should be notified and further enhanced CT or CTU examination is needed to clarify [19]. Plain CT has a very high diagnosis rate for urinary stones.…”

Section: Discussionmentioning

confidence: 99%

Focus on Upper Urinary Tract Stones Combined With Parenchymal Infiltrative Renal Pelvis Cancer

Zhang,

Ke,

Qiu

et al. 2024

Kidney Blood Press Res

View full text Add to dashboard Cite

Introduction: Upper urinary tract stones combined with parenchymal infiltrative renal pelvic cancer is challenging to detect on imaging, and to evaluate the differential diagnosis. Case Presentation: The symptoms and diagnoses in three cases of parenchymal infiltrative renal pelvic cancer and upper urinary tract stones that occurred between June 2019 and June 2022 were reviewed. Primary symptoms of lumbar discomfort and hemoturia were evident in all three patients. Preoperative Computed Tomography (CT) abdominal imaging revealed that all three cases had hydronephrosis along with renal stones, while the other two cases only had localized hypoenhancement of the renal parenchyma, which was only thought to be limited inflammatory changes in the renal cortex as a result of the combination of renal pelvis infection. After percutaneous nephrolithotomy or ureteroscopic lithotripsy, a combined renal pelvis tumor was discovered in all of these instances. Radical tumor surgery was later performed. One patient who had several tumor metastases passed away six months after surgery. A case with multiple metastases was discovered 15 months after surgery and survived with the help of the current chemotherapy. A case with a bladder tumor recurrence was discovered 16 months after surgery and had transurethral bladder tumor electrosurgery and routine bladder perfusion chemotherapy. Conclusion: Upper urinary tract stones and parenchymal infiltrative pyel carcinoma have atypical imaging, easily confused with infectious diseases. CT or Computed Tomography Urography (CTU) must be considered by urologists. Patients who have a CT with local renal parenchyma density should be suspected of having parenchymal invasive renal pelvis carcinoma; a needle biopsy ought to be performed; repeat biopsies may be performed if necessary. High-risk individuals need multiple, sufficient biopsies as needed and a comprehensive intraoperative assessment of the renal pelvic mucosa.

show abstract

Section: Discussionmentioning

confidence: 99%

Focus on Upper Urinary Tract Stones Combined With Parenchymal Infiltrative Renal Pelvis Cancer

Zhang,

Ke,

Qiu

et al. 2024

Kidney Blood Press Res

View full text Add to dashboard Cite

show abstract

“…Non-contrast phase in CT urography is the best imaging modality for detection of urinary calculi and can accurately depict site and and size of calculus. With MDCT urography, the functional status of the kidneys can be evaluated simultaneously on excretory & delayed phases 7,8,9 Second most common cause for ureteral dilatation was due to obstruction by external malignant mass accounting for 54 cases. In patients with known or newly diagnosed malignancies of ca cervix, ca ovary, ca uterus, ca bladder, metastases, renal or ureteral malignancies, retroperitoneal masses with involvement of urinary system can be studied which helps in management of the malignancy.…”

Section: Discussionmentioning

confidence: 99%

A Study on Ureteric Abnormalities in Single Contrast Bolus CT Urography at A Tertiary Care Centre

Varma

Titare²,

Kaginalkar³

2023

ijmsdr

View full text Add to dashboard Cite

Introduction: CT urography is an imaging technique in which the i.v contrast is injected and phases of CT scan are taken to study the entire urinary system. It has essentially replaced intravenous urography (IVU) in most imaging practices. CT Urography has evolved as an ideal imaging tool for comprehensive imaging assessment of patients with flank pain, malignancies, hematuria, trauma, renal calculi, suspected congenital malformations and in various clinical settings. Other CT advantages include the use of multiplanar reconstruction (MPR), curved planar reformatted images, maximum intensity projection (MIP) and three-dimensional (3D) reconstruction which gives valuable information to the clinician about the extent of the lesions and helps in management. Aim: To study various types of ureteric abnormalities in CT Urography in various clinical presentation. Materials and methods: This is a tertiary hospital based observational Descriptive Cross sectional study conducted on 360 patients referred for CT Urography with Clinical Signs & Symptoms of urinary tract abnormalities, having ureteric imaging abnormalities. Siemens somatum High Definition 128 slice CT scanner was used for single bolus CT urography. Results: Males were more as compared to females with age group 31 to 50 years (44.4%). Abdominal pain with urinary complaints was seen in maximum number of patients (203 cases- 56.4%). Urinary complaints in known abdomino-pelvic malignancies was seen in 18% cases. 285 patients had obstructive urography findings like hydronephrosis or hydroureter, and 75 cases had non obstructive findings like ureteral filling defects due to calculi, clots, etc or abnormal ureteric course or only congenital abnormality. Most hydroureter cases were secondary to obstructive calculus followed by obstruction by external malignant mass. Conclusion: This study outlines the most common ureteric abnormalities in patients referred for CT urography which were mostly obstructive findings most cases were secondary to obstructive calculus followed by obstruction by external malignant mass. The non obstructive findings like ureteral filling defects were due to calculi, clots, etc or abnormal ureteric course or only congenital abnormalities. Delayed phase of CT urography can also be applied in Contrast CT study of abdomen & Pelvic scans on case to case basis to study ureteric involvements & pathologies.

show abstract

“…Urinary tract obstruction (UTO) might be an unpleasant consequence of trapped stones, which can deteriorate renal function when left untreated (4). Stone-mediated UTO could be detected through non-contrast computed tomography (CT) which has a high sensitivity and specificity (5). It is worth noting that a recent cohort study with more than 12 million youth aged less than 19 years indicated the link between exposure to diagnostic low-dose radiation and the development of malignant tumors.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of renal function with renography in patients with renal colic

Gharepapagh,

Hassanzadeh,

Ghabousian

et al. 2023

FEM

View full text Add to dashboard Cite

Objective: Urolithiasis is responsible for the majority of urological emergencies. Although computed tomography (CT) scan can identify urinary obstruction caused by stones, there is a growing concern about exposure to radiation made by this method. Renal scintigraphy can provide valuable insights regarding the functional status of kidneys and can significantly reduce exposure to radiation. The goal of present study was to assess renal function through renal scintigraphy in patients with acute renal colic and it explores the association between renal scintigraphy performance and ultrasound in terms of detecting hydronephrosis. Methods: For this study, 20 patients with acute renal colic were chosen. Each patient underwent renal ultrasonography and subsequently received renal scintigraphy with Technetium-99m diethylenetriaminepentaacetic acid (Tc-99m DTPA). Cohen's Kappa coefficient and Cramer's V correlation were employed to demonstrate the extent of agreement between ultrasound and renal scintigraphy. Results: 12 (60%) patients were male. Glomerular filtration rate (GFR) values were correlated with Cockcroft-Gault equation and the Gates method (P=0.002, r=0.642). There was a good agreement and a statistically significant relationship between ultrasound and renal scintigraphy in terms of detecting obstructive uropathy in both kidneys. Conclusion: To conclude, GFR values were correlated between Cockcroft-Gault equation and the Gates method in patients with acute renal colic. There was a good agreement and statistically significant relationship between ultrasound and obstructive renography results in both kidneys. However, we found no association between perfusion phase of renal scintigraphy and ultrasonography in terms of hydronephrosis detection.

show abstract

Diagnostic value of 64‑slice spiral computed tomography imaging of the urinary tract during the excretory phase for urinary tract obstruction

Cited by 3 publications

References 6 publications

Focus on Upper Urinary Tract Stones Combined With Parenchymal Infiltrative Renal Pelvis Cancer

Focus on Upper Urinary Tract Stones Combined With Parenchymal Infiltrative Renal Pelvis Cancer

A Study on Ureteric Abnormalities in Single Contrast Bolus CT Urography at A Tertiary Care Centre

Evaluation of renal function with renography in patients with renal colic

Contact Info

Product

Resources

About