We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What Is the Renal Sinus?

By J. Beam
Updated Feb 11, 2024
Our promise to you
WiseGeek is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WiseGeek, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

In anatomical terms, sinus has the same meaning as a cavity, space, channel or “hollow.” There are many different sinus, or sinuses, throughout the body and they are generally named for their anatomical locations. The renal sinus is a cavity expansion inside the kidney that contains the renal pelvis, calices and the kidney’s vessels and nerves. In medicine, the term may commonly come up in relation to medical imaging tests as many things can be discerned pathologically from imaging of the renal sinus, including locating lesions and tumors.

Within the renal cavity or sinus, there are smaller arteries that lead to the renal arteries. The renal arteries enter the kidney at the hilum and branch into these smaller arteries, which is how blood flows to and from the kidneys. The glomerulus is the part of the kidney that acts as a filtration system and aids the kidneys in the production of urine. Urine is then collected in a cup-like system of collection tubes called calyces or calices, all of which lead to the renal pelvis. The renal pelvis is a basin-like collection area surrounded by the kidney in the center of the renal sinus area.

Imaging of the area, whether through ultrasound, computed tomography (CT), or magnetic resonance imaging (MRI), can help medical professionals determine specific information about types of lesions, complex renal diseases and also identifying and staging tumors. Though the renal cavity is comprised of major kidney vessels and the calices, there is also a great deal of tissue, fat and nerve channels, which can also be affected by a variety of pathologic states.

Examples of non-cancerous lesions affecting the renal sinus include cysts, aneurysms and inflammation. Renal cell carcinoma is cancer of the kidney and is often detected through CT imaging of the area. Many less complex diseases, such as diabetes, will show up in urine and blood analysis and do not require imaging. Most radiographers or imaging technicians are trained to obtain adequate visual record of the renal sinus as ordered. The medical specialty that deals directly with diagnosis and treatment of kidney diseases is nephrology. Similarly, a urologist is a medical doctor that specializes in diagnosis and treatment of the organs of the urinary tract in addition to male reproductive organs. At times, the roles of a nephrologist and urologist may overlap, but problems within the renal sinus are treated by a nephrologist.

WiseGeek is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Link to Sources
Discussion Comments
By anon962880 — On Jul 26, 2014

The material between the Renal Pelvis and Renal Hilum is the same.

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.