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Currently filtering by tag: Eosinophils

Diagnose This (September 10, 2018)

Article
What is your diagnosis?    ​   ​ ​   ​   ​ ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​ ​   ​ ​   ​ ​   ​ ​     ​   ​   ​ ​...
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Diagnose This! (May 14, 2018)

Article
What is your diagnosis?    ​   ​ ​   ​   ​ ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​ ​   ​ ​   ​ ​   ​ ​     ​   ​   ​ ​...
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Interstitial Eosinophils

Article
Prominent interstitial eosinophils (see arrow) are most often associated with allergic-type acute interstitial nephritis (AIN).  However, eosinophils are not specific for allergic-type AIN as they may also be prominent in other acute and chronic diseases affecting the tubulointerstitium.  Diabetic patients, for example, may have prominent interstitial eosinophilic aggregates, which are usually not associated with medication use or a history of allergy (see Dai DF et al.  Interstitial eosinophilic aggregates in diabetic nephropathy: allergy or not? Nephrol Dial Transplant. 2015 Aug;30(8):1370-6).  Remember, too, that urine eosinophils can be found in a variety of upper and lower urinary tract diseases as well,...
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Eosinophil-Rich Inflammation in Diabetic Glomerulopathy

Article
These photomicrographs are from a patient with diabetic nephropathy as evidenced by the Kimmelstiel-Wilson nodules in the glomerulus present on the PAS section. A patchy, interstitial inflammatory infiltrate rich in eosinophils is present, as seen in the H&E stained section. The infiltrate is particularly prominent in areas of fibrosis. No tubulitis is identified in the biopsy. Interstitial inflammation rich in eosinophils is a common finding in diabetic nephropathy. When present, the pathologist is forced to determine if the inflammation warrants a diagnosis of acute interstitial nephritis. This is an important distinction because, if interstitial nephritis is present, the clinician must...
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IgG4

Article
Renal parenchyma with florid interstitial fibrosis with thick bands of sclerosis expanding the interstitium and pushing the tubules apart on the Jones methenamine silver stain at (100X). Examination at 400X on the H&E stain reveals a dense mixed interstitial inflammatory infiltrate that is rich in plasma cells. These findings are characteristic of renal involvement by a systemic fibroinflammatory disease known as IgG4-related disease. IgG4 staining of the tissue confirmed the presence of numerous IgG4-positive plasma cells.
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