Magnetic resonance imaging in the diagnosis and staging of renal masses: a critical appraisal and comparison with computed tomography

This review explores the classification and evaluation of suspicious renal lesions across several radiologic imaging modalities. Diagnostic medical sonography (DMS), computed tomography (CT), magnetic resonance imaging (MRI), and contrast-enhanced ultrasound (CEUS) are the primary modalities used to investigate questionable lesions found within the kidneys. Renal masses may range from completely benign to malignant. They are classified based on many different features and characteristics. These lesions may be simple cystic, complex cystic, or solid in nature. Masses may also exhibit varying degrees of vascularity, septations, and calcifications. The discussed imaging modalities have varying strengths, limitations, and implications for use. Imaging techniques may be used independently or in conjunction to best diagnose and treat a patient with a suspicious renal mass. The aim of this review was to describe the diagnostic value of the imaging modalities (DMS, CT, MRI, and CEUS) and their role in the evaluation of suspicious renal lesions.

Download Full-text

Diagnostic accuracy of contrast-enhanced computed tomography and contrast-enhanced magnetic resonance imaging of small renal masses in real practice: sensitivity and specificity according to subjective radiologic interpretation

World Journal of Surgical Oncology ◽

10.1186/s12957-016-1017-z ◽

2016 ◽

Vol 14 (1) ◽

Cited By ~ 13

Author(s):

Jae Heon Kim ◽

Hwa Yeon Sun ◽

Jiyoung Hwang ◽

Seong Sook Hong ◽

Yong Jin Cho ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Computed Tomography ◽

Magnetic Resonance ◽

Resonance Imaging ◽

Small Renal Masses ◽

Renal Masses ◽

Contrast Enhanced ◽

Enhanced Computed Tomography ◽

Real Practice ◽

Contrast Enhanced Computed Tomography

Download Full-text

Imaging Manifestations of Acute and Chronic Renal Infection That Mimics Malignancy: How to Make the Diagnosis Using Computed Tomography and Magnetic Resonance Imaging

Canadian Association of Radiologists Journal ◽

10.1016/j.carj.2019.07.002 ◽

2019 ◽

Vol 70 (4) ◽

pp. 424-433

Author(s):

Amar Udare ◽

Jorge Abreu-Gomez ◽

Satheesh Krishna ◽

Matthew McInnes ◽

Evan Siegelman ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Computed Tomography ◽

Magnetic Resonance ◽

Cell Carcinoma ◽

Renal Calculi ◽

Resonance Imaging ◽

Emphysematous Pyelonephritis ◽

Renal Masses ◽

Inflammatory Changes ◽

Renal Infection

Purpose To review the computed tomography and magnetic resonance imaging manifestations of acute and chronic renal infections that may mimic malignancy and to provide useful tips to establish an imaging diagnosis. Conclusion Acute and chronic bacterial pyelonephritis are usually readily diagnosed clinically and on imaging when the diagnosis is suspected based upon clinical presentation. When unsuspected, focal, extensive or mass-like, acute and chronic bacterial pyelonephritis may mimic infiltrative tumours such as urothelial cell carcinoma (UCC), lymphoma, and metastatic disease. Infection may be suspected when patients are young and otherwise healthy when there is marked associated perinephric changes and in the absence of metastatic adenopathy or disease elsewhere in the abdomen and pelvis. Renal abscesses, from bacterial or atypical microbial agents, can appear as complex cystic renal masses mimicking cystic renal cell carcinoma. Associated inflammatory changes in and around the kidney and local invasion favour infection. Emphysematous pyelonephritis can mimic necrotic or fistulizing tumour; however, infection is more likely and should always be considered first. Xanthogranulomatous pyelonephritis can mimic malignancy when focal or multifocal and in cases without associated renal calculi. Malacoplakia is an inflammatory process that may mimic malignancy and should be considered in patients with chronic infection. Bacillus Calmette-Guerin (BCG)-induced pyelonephritis is rare but can mimic renal malignancy and should be considered in patients presenting with a renal mass when being treated with BCG for urinary bladder UCC.

Download Full-text