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At least 1,657 records · Page 92Linked to original sources
PubMedDate not supplied

Histopathological atlas of renal diseases: membranous glomerulonephritis.

Membranous glomerulonephritis (MGN) is characterized by thickening of the glomerular basement membrane due to the presence of subepithelial immune deposits. From a morphological point of view, idiopathic MGN is indistinguishable from class V lupus nephritis. The glomerular lesion is extremely variable and the basement membrane thickening changes over time. According to the classic descriptions, MGN is in fact divided into four stages.

Basement Membrane↗
PubMedDate not supplied

Histopathological atlas of renal diseases: Minimal Change disease and focal glomerulosclerosis.

Minimal Change disease and focal segmental glomerulosclerosis are both clinically characterized by presence of Nephrotic Syndrome. The term Minimal Change disease describes a pathology appearance on light microscopy in which there are no definitive changes from normal glomeruli, although the degree of change that is considered significant remains the subject of some controversy. The focal segmental glomerulosclerosis is morphologically characterized by a segmental solidification of the glomerular tuft, due to collapse of the capillary wall, affecting only some glomeruli (focal). It remains unresolved whether Minimal Change disease and focal segmental glomerulosclerosis are different diseases or whether they represent a spectrum of presentation of the same disease process.

Capillaries↗
PubMed1992

Acupuncture atlas.

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Acupuncture Points↗
PubMedDate not supplied

Histopathological atlas of renal diseases: ANCA-associated vasculitis (first part).

"ANCA-associated vasculitis" are Wegener's Granulomatosis, Micropolyarteritis and its renal-limited variant (previously called idiopathic necrotizing glomerulonephritis). According to the "Chapel Hill Consensus Conference" classification, ANCA-associated vasculitis are characterized by prevalent involvement of small-size vessels, whereas medium and large-size arteries involvement is the marker of Polyarteritis Nodosa. But the vessel size-based classification is not always powerful enough, because also in ANCA-associated vasculitis the involvement of medium and large-size arteries if frequent. The distinctive marker of ANCA-associated renal vasculitis has therefore become the presence of necrotizing extracapillary glomerulonephritis, that is always absent in Polyarteritis Nodosa.

Antibodies, Antineutrophil Cytoplasmic↗
PubMedDate not supplied

Histopathological atlas of renal diseases: light chain deposition disease.

Monoclonal diseases of B-cell lineage, often referred to as plasma cell dyscrasias, are characterized by abnormal and uncontrolled proliferation of a single clone of B cells at different maturation stages, with a more or less marked differentiation to immunoglobulin (Ig)-secreting plasma cells. Thus B-cell proliferation is usually associated with the production and secretion in blood of a monoclonal Ig or a fragment thereof. An ominous consequence of secretion of monoclonal Ig products is their deposition in tissue. These proteinaceous deposits can take the form of casts (in myeloma cast nephropathy), cristals (in myeloma-associated Fanconi's syndrome), fibrils (in light-chain [LC] amyloidosis), or granular precipitates (in monoclonal Ig deposition disease [LCDD]).

B-Lymphocytes↗
PubMedDate not supplied

Histopathological atlas of renal diseases: diabetic nephropathy.

Renal involvement in type 2 diabetes is a well known clinical occurrence. According to data from the literature, besides diabetic glomerulosclerosis, type 2 diabetic nephropathy may occur as a non specific chronic damage mostly related to vascular changes, or as a glomerular disease superimposed on or even unrelated to diabetic glomerulosclerosis. The most common picture remains in any case diabetic glomerulosclerosis (diabetic GS), that is characterized by variable degrees of mesangial sclerosis.

Diabetic Nephropathies↗
PubMed1975

An atlas of subgross pathology of the human breast with special reference to possible precancerous lesions.

One hundred ninety-six whole human breasts were examined by a subgross sampling technique with histologic confirmation. The method permitted the enumeration and identification of essentially all the focal dysplastic, metaplastic, hyperplastic, anaplastic, and neoplastic lesions. Of the 196, 119 were suitable for complete quantitative morphologic analysis of the focal lesions by type. They consisted of 67 breasts obtained by autopsy, 29 cancerous breasts obtained by mastectomy, and 23 contralateral to those with cancer. All lesions, photographed subgrossly, were subsequently confirmed and correlated histologically. Morphologic evidence supported the hypothesis that most lesions traditionally grouped as mammary dysplasia or fibrocystic disease, including apocrine cysts, sclerosing adenosis, fibroadenomas, various forms of lobules (sclerotic, dilated, hypersecretory, hyperplastic, atypical, or anaplastic), ductal carcinoma in situ (DCIS), and lobular carcinoma in situ (LCIS), arose in terminal ductal-lobular units (TDLU) or in the lobules themselves. A probable exception was papilloma of ducts larger than terminal ones. Isolated foci of DCIS within the TDLU were seen in 40% of cancerous breasts, which indicated that the disease often was multifocal. Of the contralateral breasts, the 60% with clinical cancer contained such lesions, and data were in accord with the clinically known fact that women with previous breast cancer have a high rate of the disease in the remaining one. An atypical lobule (AL) of type A (ALA) had the following characteristics: a) It was more common in cancerous breasts or in those contralateral to cancer than in breasts not so identified; b) it had lobular morphology and was a terminal structure on the mammary tree; c) it tended to persist after the menopause, whereas normal lobules usually atrophied; d) it variable degrees of anaplasia forming an arbitrary continuum from normal lobules to ductal carcinoma in situ; and e) as ALA progressed to DCIS, the unfolded lobule resembled a duct which gave the false impression that DCIS was a ductal lesion. The morphologic evidence supported that hypothesis that the lesions herein called AL were derived from TDLU and were precancerous.

Adenocarcinoma, Scirrhous↗
PubMed1924

An Abnormal Atlas.

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Journal Article↗