Pelvicalyceal is an adjective referring to two parts of the kidney. They are called the renal pelvis and the renal calyx.
The pelvocalyceal system refers to the collecting system of the kidney, which includes the renal pelvis and the calyces. It is responsible for collecting urine produced by the kidney and transporting it towards the ureter for excretion from the body. Abnormalities in the pelvocalyceal system can lead to issues like kidney stones or hydronephrosis.
Pelvocalyceal complexes are part of the urinary system and refer to the structures that collect urine within the kidney before it passes into the ureter. They consist of the renal pelvis and the calyces, which are cup-like structures that collect urine produced by the kidney's nephrons.
Nonspecific pelvocalyceal fullness can be caused by various factors, including mild hydronephrosis due to urinary obstruction, renal stones, or changes in renal blood flow. It may also result from inflammation or infection, such as pyelonephritis, or from anatomical variations. Additionally, conditions like pregnancy can lead to transient pelvocalyceal fullness due to hormonal changes and increased pressure in the urinary tract. It's important to evaluate the clinical context and imaging findings to determine the underlying cause.