During pathomorphological kidney investigation of a patient, who for a long time had been suffering from osteomyelitis and died from progressing renal failure, the following was revealed: deposits of homogeneous eosinophilic masses in glomerular mesangium, arterial and arteriolar walls, and stroma, which became red when stained with Congo red. What pathological process is this?

Answer options

1. Amyloidosis
2. Calcinosis
3. Hyalinosis
4. Carbohydrate degeneration
5. Mucoid swelling

Explanation

During pathomorphological kidney investigation of a patient, who for a long time had been suffering from osteomyelitis and died from progressing renal failure, the following was revealed: deposits of homogeneous eosinophilic masses in glomerular mesangium, arterial and arteriolar walls, and stroma, which became red when stained with Congo red. What pathological process is this?The description is typical for a pathological protein called Amyloid seen in degenerative processes. The condition is called Amyloidosis. Stained by Congo red.