What surrounds the kidney and adrenal gland?

Under normal circumstances, the renal fascia surrounds the kidney and adrenal gland. A detailed analysis is as follows:

The renal fascia lies outside the perirenal fat capsule and is a connective tissue membrane that envelops both the adrenal glands and kidneys. It sends septa (trabeculae) inward to connect with the perirenal fat capsule and renal fibrous capsule, helping to stabilize the position of the kidneys. The portions of the fascia located anterior and posterior to the kidney are known as the anterior renal fascia and posterior renal fascia, respectively. These two layers fuse above the adrenal gland and at the lateral border of the kidney, but separate below the kidney, blending respectively with the extraperitoneal connective tissue and the iliac fascia. The ureter passes between these layers. If the renal fascia is damaged or functionally impaired, conditions such as wandering kidney or nephroptosis (renal ptosis) may occur, leading to symptoms including low back pain, tenderness upon percussion in the renal area, renal colic, nausea, and vomiting.

In summary, the renal fascia plays an important role in protecting renal parenchyma and maintaining the stable position of the kidneys. If patients recently develop the aforementioned discomforts or imaging studies reveal abnormal kidney displacement, timely further evaluation is recommended to determine the exact cause and initiate appropriate treatment promptly, thus avoiding disease progression.