Related Experiment Video
Updated: Apr 15, 2026

04:37
Unilateral Ureteral Obstruction Model for Investigating Kidney Interstitial Fibrosis
Published on: April 25, 2025
1.9K
Unilateral perirenal fibrosis without aorta involvement
1Department of Urology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China. nianzengxing@163.com.
European Review for Medical and Pharmacological Sciences
|March 26, 2015
Summary
Unilateral perirenal fibrosis is a rare condition that can mimic malignancy. This case highlights the importance of considering retroperitoneal fibrosis in perirenal masses, even after initial misdiagnosis.
Area of Science:
- Nephrology
- Urology
- Pathology
Background:
- Retroperitoneal fibrosis (RPF) typically involves the aorta.
- Unilateral perirenal RPF without aortic involvement is exceptionally rare.
Observation:
- A case presented with a unilateral perirenal mass.
- The mass was initially misdiagnosed as malignancy despite biopsy.
Findings:
- The final diagnosis confirmed unilateral perirenal fibrosis.
- This condition mimicked malignant tumors in clinical presentation.
Implications:
- RPF should be considered in the differential diagnosis of perirenal masses.
- Awareness of rare RPF presentations can improve diagnostic accuracy.
- This case underscores the need for thorough evaluation of perirenal masses.
Related Concept Videos
Acute Kidney Injury II: Pathophysiology
2.1K
Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
2.1K
Renal Corpuscle
9.7K
The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
9.7K
Rheumatic Heart Disease I: Introduction
970
Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
970
Aneurysm I: Introduction
632
An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
632

