The Kidneys

3. The most common histologic type of acute cellular rejection in renal allografts.
7. Arteries located at the corticomedullary junction that run parallel to the base of the renal pyramids.
10. Dilation of the renal pelvis and calyces secondary to complete or incomplete urinary tract obstruction.
11. Congenitally small kidney resulting from incomplete metanephric development, showing normal architecture and function.
13. The histological pattern of acute humoral or cell-mediated renal transplant rejection affecting blood vessel walls.

1. Common benign renal hamartoma composed of blood vessels, smooth muscle cells, and mature adipose tissue.
2. Anatomical eponym for normal renal cortex projecting deeper into the parenchyma between pyramids, known as Columns of ______.
4. Renal arteries that course between the pyramids along the Columns of Bertin toward the corticomedullary junction.
5. Common congenital anomaly characterized by the fusion of the lower poles of both kidneys across the midline.
6. Severe life-threatening necrotizing renal parenchymal infection characterized by intrarenal gas formation.
8. Presence of purulent exudate or pus within an obstructed renal collecting system.
9. Eponym for the CT and ultrasound classification system used to categorize renal cystic lesions based on malignancy risk.
12. Normal variant characterized by a focal bulge on the lateral border of the left kidney due to splenic compression: dromedary ______.