<unk>  <unk>  defines a pathologic process rather than a clinical syndrome in which varying degrees of renal<unk>  injury occur. Clinically,<unk>  manifests as<unk>  kidney injury although the terms have previously been used interchangeably.<unk>  is the most common cause of overt AKI. Despite the term,<unk>  does not necessarily imply cellular necrosis with evidence of non-necrotic injury observed more consistently. Furthermore, clinicopathologic correlation is often irrelevant with severe renal insufficiency sometimes seen with modest pathological findings. <unk>  can be either ischemic or toxin induced. Classically, ischemic<unk>  follows hypotension or hypovolemia with patchy involvement usually observed. On the other hand, toxic<unk>  is usually a dose-dependent injury seen with medications, diagnostic agents, and heavy metals with proximal tubule damage involving almost all nephrons.
Acute tubular necrosis
Renal papillary necrosis
Renal cortical necrosis
Shunt nephritis
Membranous nephritis
Interstitial nephritis
Contrast induced nephropathy
Analgesic nephropathy