What is the swelling of kidney crtex and medulla?

Swelling of the renal cortex and medulla, often referred to as renal edema, can occur due to various conditions such as acute kidney injury, hypertension, or inflammation. This swelling may result from fluid accumulation within the tissues, leading to impaired kidney function and potential symptoms like pain, changes in urination, or fluid retention. Identifying the underlying cause is crucial for appropriate treatment and management.