Renal cortical necrosis

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Vendhan Ramanujam M.B.B.S [2]

Synonyms and keywords: RCN, BRCN, acute cortical necrosis, acute renal failure with acute cortical necrosis, diffuse bilateral renal cortical necrosis, diffuse cortical necrosis

Overview

Renal cortical necrosis (RCN) is a rare cause of acute renal failure. The condition is usually caused by significantly diminished renal arterial perfusion secondary to vascular spasm, microvascular injury, or disseminated intravascular coagulation and is the pathological progression of acute tubular necrosis. It is frequently associated with obstetric catastrophes such as abruptio placentae and septic shock.

Pathophysiology

The exact pathologic mechanism for RCN is unclear, however the onset of small vessel pathology is likely an important aspect in the etiology of this condition. In general, the renal medulla is under greater oxygen tension and more prone to ischemic injury, especially at the level of the proximal collecting tubule, leading to its preferential damage in a sudden drop in perfusion. Rapidly corrected acute renal ischemia leads to acute tubular necrosis, from which complete recovery is possible, while more prolonged ischemia may lead to RCN. Pathologically, the cortex of the kidney is grossly atrophied with relative preservation of the gross structure of the medulla. The damage is usually bilateral owing to its underlying systemic causes, and is most frequently associated with pregnancy (>50% of cases). It accounts for 2% of all cases of acute renal failure in adults and more than 20% of cases of acute renal failure during late pregnancy[1][2].

Causes

In adults

Neonatal

Epidemiology and Demographics

It is three times more common in developing nations versus industrialized nations (2% versus 6% in causes of acute renal failure).

Diagnosis

While the only diagnostic gold standard mechanism of diagnosis en vivo is via renal biopsy, the clinical conditions and blood clotting disorder often associated with this disease may make it impractical in a clinical setting. Alternatively, it is diagnosed clinically, or at autopsy, with some authors suggesting diagnosis by contrast enhanced CT[16].

Treatment

Patients will require dialysis to compensate for the function of their kidneys.

Prognosis

Cortical necrosis is a severe and life threatening condition, with mortality rates over 50%. Those mortality rates are even higher in neonates with the condition due to the overall difficult nature of neonatal care and an increased frequency of comorbid conditions. The extent of the necrosis is a major determinant of the prognosis, which in turn is dependent on the duration of ischemia, duration of oliguria, and the severity of the precipitating conditions. Of those that survive the initial event, there are varying degrees of recovery possible, depending on the extent of the damage.

References

  1. Prakash, J.; Niwas, SS.; Parekh, A.; Pandey, LK.; Sharatchandra, L.; Arora, P.; Mahapatra, AK. (2010). "Acute kidney injury in late pregnancy in developing countries". Ren Fail. 32 (3): 309–13. doi:10.3109/08860221003606265. PMID 20370445. Unknown parameter |month= ignored (help)
  2. Pertuiset, N.; Grünfeld, JP. (1994). "Acute renal failure in pregnancy". Baillieres Clin Obstet Gynaecol. 8 (2): 333–51. PMID 7924011. Unknown parameter |month= ignored (help)
  3. Singh, B.; Gupta, A.; Mahajan, S.; Gupta, R. (2012). "Acute cortical necrosis and collapsing glomerulopathy in an HIV-infected patient: a rare clinical scenario". Saudi J Kidney Dis Transpl. 23 (2): 363–6. PMID 22382240. Unknown parameter |month= ignored (help)
  4. Kumar, S.; Sharma, A.; Sodhi, KS.; Wanchu, A.; Khandelwal, N.; Singh, S. (2012). "Renal cortical necrosis, peripheral gangrene, perinephric and retroperitoneal haematoma in a patient with a viper bite". Trop Doct. 42 (2): 116–7. doi:10.1258/td.2011.110281. PMID 22316624. Unknown parameter |month= ignored (help)
  5. Jung, YS.; Shin, HS.; Rim, H.; Jang, K.; Park, MH.; Park, JS.; Lee, CH.; Kim, GH.; Kang, CM. "Bilateral renal cortical necrosis following binge drinking". Alcohol Alcohol. 47 (2): 140–2. doi:10.1093/alcalc/agr154. PMID 22215004.
  6. Shiradhonkar, S.; Jha, R.; Rao, BS.; Narayan, G.; Sinha, S.; Swarnalata, G. (2011). "Acute cortical necrosis following renal transplantation in a case of sickle cell trait". Indian J Nephrol. 21 (4): 286–8. doi:10.4103/0971-4065.78066. PMID 22022093. Unknown parameter |month= ignored (help)
  7. Uppin, MS.; Rajasekhar, L.; Swetha, H.; Srinivasan, VR.; Prayaga, AK. (2010). "Renal cortical necrosis at presentation in a patient with systemic lupus erythematosus: an autopsy case report". Clin Rheumatol. 29 (7): 815–8. doi:10.1007/s10067-010-1395-5. PMID 20169460. Unknown parameter |month= ignored (help)
  8. 8.0 8.1 Huang, CC.; Huang, JK. (2011). "Sepsis-induced acute bilateral renal cortical necrosis". Nephrology (Carlton). 16 (8): 787. doi:10.1111/j.1440-1797.2011.01478.x. PMID 22029648. Unknown parameter |month= ignored (help)
  9. Kim, JO.; Kim, GH.; Kang, CM.; Park, JS. (2011). "Bilateral acute renal cortical necrosis in SLE-associated antiphospholipid syndrome". Am J Kidney Dis. 57 (6): 945–7. doi:10.1053/j.ajkd.2011.02.381. PMID 21514023. Unknown parameter |month= ignored (help)
  10. Novembrino, C.; De Giuseppe, R.; de Liso, F.; Bonara, P.; Bamonti, F. (2010). "Vitamin deficiency and renal cortical necrosis". Lancet. 376 (9736): 160, author reply 161. doi:10.1016/S0140-6736(10)61101-4. PMID 20638557. Unknown parameter |month= ignored (help)
  11. Krishna, GS.; Kishore, KC.; Sriram, NP.; Sainaresh, VV.; Lakshmi, AY.; Siva Kumar, V. (2009). "Bilateral renal cortical necrosis in acute pancreatitis". Indian J Nephrol. 19 (3): 125. doi:10.4103/0971-4065.57112. PMID 20436735. Unknown parameter |month= ignored (help)
  12. Baliga, KV.; Narula, AS.; Khanduja, R.; Manrai, M.; Sharma, P.; Mani, NS. (2008). "Acute cortical necrosis in Falciparum malaria: an unusual manifestation". Ren Fail. 30 (4): 461–3. doi:10.1080/08860220801964293. PMID 18569922.
  13. Toh, HS.; Cheng, KC.; Kuar, WK.; Tan, CK. (2008). "The Case. Generalized petechiae and acute renal failure: bilateral renal cortical necrosis in meningococcemia". Kidney Int. 73 (12): 1443–4. doi:10.1038/ki.2008.143. PMID 18516063. Unknown parameter |month= ignored (help)
  14. Leroy, F.; Bridoux, F.; Abou-Ayache, R.; Belmouaz, S.; Desport, E.; Thierry, A.; Bauwens, M.; Touchard, G. (2008). "[Quinine-induced renal bilateral cortical necrosis]". Nephrol Ther. 4 (3): 181–6. doi:10.1016/j.nephro.2008.01.001. PMID 18343736. Unknown parameter |month= ignored (help)
  15. Sastre López, A.; Gago González, E.; Baños Gallardo, M.; Gómez-Huertas, E.; Ortega Suárez, F. (2007). "[All-trans retinoic acid syndrome [corrected] and renal cortical necrosis]". An Med Interna. 24 (11): 551–3. PMID 18275266. Unknown parameter |month= ignored (help))
  16. Kim, HJ.; Cho, OK. (1996). "CT scan as an important diagnostic tool in the initial phase of diffuse bilateral renal cortical necrosis". Clin Nephrol. 45 (2): 125–30. PMID 8846525. Unknown parameter |month= ignored (help)

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