A 52 year old man with poorly controlled blood pressure comes to the emergency department because of severe headache and blurry vision. Blood pressure is 242/138 mm Hg. Funduscopic examination shows papilledema. Serum creatinine is markedly elevated. Biopsy of a renal arteriole would most likely show which of the following?
- A)Granulomatous inflammation with giant cells
- B)Calcification of the media without luminal narrowing
- C)Homogeneous pink hyaline thickening
- D)Cholesterol clefts in the lumen
- E)Onion skin concentric smooth muscle proliferationGABARITO
Explicação
Onion skin concentric smooth muscle proliferation is correct. Malignant hypertension produces hyperplastic arteriolosclerosis with laminated thickening of arteriolar walls and severe luminal narrowing. This explains the acute end organ injury in the retina and... Ver explicação completa e trilha adaptativa →