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HUMAN PHENOTYPE - ANNOTATIONS

The Human Phenotype Ontology (HPO) is downloaded weekly from http://compbio.charite.de/hudson/job/hpo/lastStableBuild/artifact/ontology/release/hp.obo. The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at http://www.human-phenotype-ontology.org/.

Term:Renal amyloidosis
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Accession:HP:0001917 term browser browse the term
Definition:A form of amyloidosis that affects the kidney. On hematoxylin and eosin stain, amyloid is identified as extracellular amorphous material that is lightly eosinophilic. These deposits often stain weakly for periodic acid Schiff (PAS), demonstrate a blue-to-gray hue on the trichrome stain and are typically negative on the Jones methenamine silver (JMS) stain. These tinctorial properties contrast with the histologic appearance of collagen, a major component of basement membranes, mesangial matrix and areas of sclerosis, which demonstrates strong positivity for PAS and JMS (See Figure 1 of PMID:25852856).
Comment:In the kidney, amyloid deposits may be found in any of the parenchymal compartments, including glomeruli, tubules, interstitium and/or vessels. Glomeruli are most commonly involved. In most instances, amyloid accumulation involves the mesangium before the capillary walls. In early cases, the process can be subtle and involves only a few mesangial regions and therefore can easily be missed by routine histologic evaluation. More extensive involvement results in marked expansion of the mesangium, which can take on a nodular appearance and mimic mesangial sclerotic processes such as diabetic glomerulosclerosis. However, the often negative staining with PAS and JMS is more typical of amyloid.
Synonyms:xref: SNOMEDCT_US:48713002;   UMLS:C0268382



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Path 1
Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of metabolism/homeostasis 0
        Amyloidosis 0
          Renal amyloidosis 0
            Renal glomerular amyloid deposition 0
            Renal interstitial amyloid deposits 0
Path 2
Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the genitourinary system 0
        Abnormality of the urinary system 0
          Abnormality of the upper urinary tract 0
            Abnormality of the kidney 0
              Abnormal renal morphology 0
                Renal amyloidosis 0
                  Renal glomerular amyloid deposition 0
                  Renal interstitial amyloid deposits 0
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