Human pathology

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medullary cystic kidney diseases

Medullary polycystic kidneys, MCKD

Synopsis

- medullary cysts (medullary polycystic kidneys)
- small kidneys
- cortical atrophy (thin renal cortices)
- prominent glomerular hyalinization
- numerous corticomedullary cysts and intramedullary cysts lined by low cuboidal epithelium
- increase in medullary connective tissue

Classification

- precaliceal canalicular ectasia (medullary sponge kidney)

- medullary cystic kidney disease (MCKD)

  • autosomal dominant medullary cystic kidney disease type 1 (ADMCKD1 or MCKD1) (1q21) (MIM.174000)
  • autosomal dominant medullary cystic kidney disease type 2 (ADMCKD2 or MCKD2) (MIM.603860).
    • MCKD2 is caused by mutation in the UMOD gene at 16p13.11-p12.3 encoding uromodulin (MIM.191845) and is allelic to familial juvenile hyperuricemic nephropathy (MIM.162000).
    • medullary cystic kidney disease 2 (MCKD2) is an autosomal dominant disease that is caused by mutations in uromodulin (UMOD), the expression of which has so far not been seen in cilia, basal bodies or centrosomes.
  • medullary cystic disease, childood type, autosomal recessive (familial juvenile nephronophtisis complex)
  • medullary cystic disease, adulthood type, autosomal dominant
  • medullary cystic disease, with tapetoretinal degeneration (renal-retinal dysplasia syndrome)

See also

- renal cysts

  • renal medullary cysts

- fetal medullary cystic kidney disease (congenital MCKD)

References

- Saunier S, Salomon R, Antignac C. Nephronophthisis. Curr Opin Genet Dev. 2005 Jun;15(3):324-31. PMID: 15917209

- Hildebrandt F, Omram H. Related New insights: nephronophthisis-medullary cystic kidney disease. Pediatr Nephrol. 2001 Feb;16(2):168-76. PMID: 11261687

- Hildebrandt F, Otto E. Molecular genetics of nephronophthisis and medullary cystic kidney disease. J Am Soc Nephrol. 2000 Sep;11(9):1753-61. PMID: 10966501