Renal puncture. A neglected aid in the diagnosis of renal masses
Related Experiment Video
Updated: Aug 10, 2026

Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis
Published on: July 18, 2017
Abstract:
Renal arteriography and nephrotomography are useful in distinguishing between renal neoplasmas and cysts. In the great majority of cases the well-vascularized neoplasm is readily identified. However, the arteriographic diagnosis of an "avascular lesion" is incomplete. These lesions make up a widely heterogeneous group, including the common simple renal cysts, avascular and degenerated neoplasms and congenital malformations. Percutaneous puncture of these "avascular" lesions under image-amplified fluoroscopy is a safe and simple means of obtaining further diagnostic information, often of decisive value.
Related Concept Videos
Nursing Assessment of the Genitourinary System II: Inspection and Palpation
Nursing Assessment of the Genitourinary System III: Percussion and Auscultation
Acute Pyelonephritis II: Diagnostic Studies and Management
Imaging Studies V: Intravenous Urography and Retrograde Pyelography
Imaging Studies VII: Vascular Imaging
Acute Kidney Injury IV: Diagnostic Studies and Prevention

