Abstract:
BACKGROUND:Some uterine endometrioid adenocarcinomas exhibit a distinctive morphological phenotype characterised by the formation of microcystic, elongated and fragmented (MELF) glands. Immunohistochemical studies have suggested that MELF-type changes represent an epithelial-mesenchymal transition which has been associated with KRAS activation in various tumours. AIMS:To investigate the molecular characteristics of endometrial tumours showing MELF, with particular reference to the frequencies of KRAS and BRAF mutations and of microsatellite instability (MSI). METHODS:MSI, and KRAS and BRAF mutation status, were assessed in 33 low-grade endometrial adenocarcinomas showing MELF features and the results compared with 33 control cases exhibiting a 'conventional' pattern of myometrial invasion. Standard histological parameters were also reviewed. RESULTS:Tumours with a MELF pattern of myometrial invasion showed more frequent vascular invasion and focal mucinous differentiation. KRAS mutations were more frequent in MELF positive than MELF negative tumours (45% vs 30%), but this difference was not statistically significant. BRAF mutations were not identified in any of the cases. MSI was identified in 20% of cases overall but did not correlate with the MELF phenotype. CONCLUSIONS:Mutations in KRAS and BRAF genes are not directly implicated in the development of a MELF pattern of invasion in endometrial carcinoma. However, RAS-associated signalling pathways could be activated through other genetic or epigenetic mechanisms. The characterisation of such alterations may become increasingly important as novel therapies are developed that target mediators involved in tumour invasion.
journal_name
J Clin Patholjournal_title
Journal of clinical pathologyauthors
Stewart CJ,Amanuel B,Grieu F,Carrello A,Iacopetta Bdoi
10.1136/jcp.2009.069500subject
Has Abstractpub_date
2010-07-01 00:00:00pages
604-8issue
7eissn
0021-9746issn
1472-4146pii
jcp.2009.069500journal_volume
63pub_type
杂志文章abstract:AIMS:To assess the association between Helicobacter pylori-associated gastritis and HLA-DR antigen (class II antigen) expression. METHODS:Fifty endoscopic gastric biopsy specimens were studied for the presence of H pylori, degree and type of inflammation, and for HLA-DR antigen expression in the epithelium. The cases ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.45.1.30
更新日期:1992-01-01 00:00:00
abstract::A 65-year-old woman with a history of a left heminephrectomy for renal carcinoma developed hypercalcaemia 11 years after the operation. The same kidney was found to contain a recurrent renal carcinoma. After the radical nephrectomy of the left kidney, hypercalcaemia remitted but reappeared 11 months later. The right k...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.32.3.234
更新日期:1979-03-01 00:00:00
abstract::The plasma clearance of intravenously administered folic acid was abnormally rapid in all of five patients studied with untreated hyperthyroidism; in three, the basal serum L. casei folate level was subnormal. Four of these patients and another patient were studied at various intervals after partial or complete correc...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.17.6.666
更新日期:1964-11-01 00:00:00
abstract::A patient with multiple myeloma had antigenically related monoclonal Fc-gamma fragments and complete IgG-kappa molecules in the serum. The urine contained only Fc-gamma fragments in the absence of Bence-Jones protein. The two distinct M-components in the serum showed electrophoretic identity but could be separated by ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.33.10.936
更新日期:1980-10-01 00:00:00
abstract:AIMS:To assess the consistency and reproducibility of assessment of c-erbB-2 immunostaining, and to examine some of the problems relating to inter- and intraobserver variability in the documentation of positive staining; to profile the spectrum of cytoplasmic and membranous staining in a wide range of tumour types. ME...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.47.9.816
更新日期:1994-09-01 00:00:00
abstract::This best practice review examines four series of common primary care questions in laboratory medicine: (i) "minor" blood platelet count and haemoglobin abnormalities; (ii) diagnosis and monitoring of anaemia caused by iron deficiency; (iii) secondary hyperlipidaemia and hypertriglyceridaemia; and (iv) glycated haemog...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1136/jcp.200X.033944
更新日期:2006-08-01 00:00:00
abstract::Carcinoma-associated fibroblast (CAF) as prominent cell type of the tumour microenvironment has complex interaction with both the cancer cells and other non-neoplastic surrounding cells. The CAF-derived regulators and extracellular matrix proteins can support cancer progression by providing a protective microenvironme...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1136/jclinpath-2014-202561
更新日期:2014-12-01 00:00:00
abstract:AIMS:To investigate the serological cross reaction between legionella and campylobacter using the rapid microagglutination test (RMAT). METHODS:Serum samples from 49 patients with campylobacter infection were tested for legionella antibodies using the indirect fluorescent antibody test (IFAT) and the RMAT. Serum sampl...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.49.7.584
更新日期:1996-07-01 00:00:00
abstract::Eight strains of Pseudomonas putrefaciens have been received from among 466 strains of Pseudomonas submitted to the Computer Trials Laboratory for identification over the last eight years. Two of the strains of P. putrefaciens from patients with otitis media and otitis externa respectively appear to have played a path...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.28.2.149
更新日期:1975-02-01 00:00:00
abstract::This is a retrospective study of the results of 4,642 blood cultures taken from 2,190 patients from 1960 to 1967 in one London hospital. The results suggested that an increased incidence of bacteraemias at this particular hospital was mainly due to the increase in the number of patients having blood cultures. Some of ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.23.2.166
更新日期:1970-03-01 00:00:00
abstract::The biochemical classification of the Klebsiella proposed by Cowan, Steel, Shaw, and Duguid (1960) has been applied to 50 strains isolated as the pure or predominant growth from sputum, and Klebsiella species have been correlated with the severity of the chest infection in the patient. A modification in nomenclature i...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.15.5.478
更新日期:1962-09-01 00:00:00
abstract:BACKGROUND:Fungal infection is increasingly recognised as an important cause of morbidity and mortality, especially in immunocompromised patients. Little information exists on laboratory services available and the methods used by general microbiology laboratories to diagnose these important infections. AIM:To investig...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,多中心研究
doi:10.1136/jcp.2005.034108
更新日期:2006-07-01 00:00:00
abstract:AIM:To evaluate the accuracy of the approximate linear formula of International Normalised Ratio (INR) imprecision by formal mathematical analysis. METHODS:Using probability theory, an exact formula for the coefficient of variation (CV) of the INR was derived. The CV from the approximate formula was compared with the ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.47.7.635
更新日期:1994-07-01 00:00:00
abstract::Cytomegalovirus (CMV) is a recognised cause of morbidity and mortality in immunocompromised individuals. This review will concentrate on recent advances in the understanding of the complex interplay between the host and parasite and the pathological consequences of perturbation of the host immune system. The classic v...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1136/jcp.54.2.84
更新日期:2001-02-01 00:00:00
abstract::Haematological malignancies are a diverse group of cancers that affect the blood, bone marrow and lymphatic systems. Laboratory diagnosis of haematological malignancies is dependent on combining several technologies, including morphology, immunophenotyping, cytogenetics and molecular genetics correlated clinical detai...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1136/jclinpath-2016-204029
更新日期:2017-06-01 00:00:00
abstract::The placenta is the fetal organ providing the interchange between mother and fetus. This organ needs to provide its function such as transport and secretion even during its development and thus all developmental changes need to be in accordance with its function. This review describes development of the placenta durin...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1136/jcp.2008.055277
更新日期:2008-12-01 00:00:00
abstract::Strokes are one of the most common causes of mortality and long term severe disability. There is evidence that lipoprotein (a) (Lp(a)) is a predictor of many forms of vascular disease, including premature coronary artery disease. Several studies have also evaluated the association between Lp(a) and ischaemic (thrombot...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1136/jcp.53.7.487
更新日期:2000-07-01 00:00:00
abstract:BACKGROUND:Laboratories traditionally culture toxoplasma tachyzoites in animals for testing and experimental use. This article considers why available cell culture methods are not used more often. AIM:To compare HeLa cell culture and animal culture for production of toxoplasma tachyzoites. METHODS:In 2000 HeLa cultur...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.2009.072066
更新日期:2010-05-01 00:00:00
abstract::Liver diseases are associated with complex haemostasis defects, in which platelets, coagulation, and fibrinolysis may all be affected. The low plasma concentrations of clotting factors often found can be the result of many changes such as impaired synthesis, increased catabolism due to intravascular coagulation, or al...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.37.5.523
更新日期:1984-05-01 00:00:00
abstract:AIMS:To determine the causes of ovarian granulomatous inflammation and to discuss the differential diagnoses. METHODS:The pathological features of all ovarian granulomas identified by pathology SNOMED coding in Northern Ireland over a 13 year period were reviewed. Case notes of patients were also reviewed. RESULTS:Th...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.50.4.324
更新日期:1997-04-01 00:00:00
abstract:AIM:Ultraviolet light (UV) is known to cause DNA damage in the epidermis. The damaged DNA is repaired or deleted by apoptosis to prevent the generation of cancer. It has been suggested that a deficient apoptotic mechanism may predispose individuals to skin cancer. Therefore, the response of normal controls and patients...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.55.11.829
更新日期:2002-11-01 00:00:00
abstract::A case of squamous cell carcinoma of the terminal ileum with no underlying duplication or inflammatory disorder is described. The neoplasm seemed to have originated from the surface epithelium, invading the wall and metastasising to the regional lymph nodes. The 65 year old patient was free of disease three years afte...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.44.3.253
更新日期:1991-03-01 00:00:00
abstract::A case of nodular regenerative hyperplasia (NRH) of the liver is described in association with exposure to the radiographic contrast medium Thorotrast. This is the first case in which the pathological findings have been fully documented. It is suggested that NRH may have developed through Thorotrast induced damage to ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1136/jcp.51.12.941
更新日期:1998-12-01 00:00:00
abstract:AIMS:Accurate assessment of HER2 status is essential for selection of patients for HER2-targeted treatment such as trastuzumab. This study investigated the hypothesis that delayed fixation impairs HER2 assessment. METHODS:9 carcinomas were received fresh, and samples were fixed immediately or put in fixative at time i...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jclinpath-2013-201978
更新日期:2014-07-01 00:00:00
abstract::An outbreak of rotavirus infection in elderly patients in a long-stay ward of a geriatric hospital is described. Virus was detected in 7/15 (47%) symptomatic individuals. Four members of staff were among those affected. The findings emphasise the need for electron microscopy to be used in the initial investigation of ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.33.3.306
更新日期:1980-03-01 00:00:00
abstract:AIMS:An increase in the proliferative state of the gastric epithelium has been attributed to infection with Helicobacter pylori. In order to obtain a more precise estimate of the magnitude of this change, the proliferative state of 17 cases of florid H pylori associated follicular gastritis was examined using the antib...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.49.1.68
更新日期:1996-01-01 00:00:00
abstract::Four assays for the detection of alphafetoprotein (AFP) in the diagnosis of primary hepatocellular carcinoma (HCC) were evaluated. The frequency of AFP detection was compared in 89 HCC patients and in 71 patients with chronic active hepatitis/cirrhosis. Of the four assays, immunodiffusion, counterimmunoelectrophoresis...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.33.8.792
更新日期:1980-08-01 00:00:00
abstract::A 68 year old diabetic man developed septicaemia and multiple liver abscesses due to Streptococcus intermedius. Liver biopsy revealed streptococcal botryomycosis which showed the Splendore-Hoeppli phenomenon. Diabetes mellitus is an example of the immunosuppressed states that have been associated with botryomycosis. ...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jcp.51.5.399
更新日期:1998-05-01 00:00:00
abstract:AIMS:The histopathological diagnosis of low-grade dysplasia (LGD) in Barrett's oesophagus (BO) is associated with poor interobserver agreement and guidelines dictate expert review. To facilitate nationwide expert review in the Netherlands, a web-based digital review panel has been set up, which currently consists of ei...
journal_title:Journal of clinical pathology
pub_type: 杂志文章
doi:10.1136/jclinpath-2020-206511
更新日期:2021-01-01 00:00:00
abstract::Sentinel lymph node biopsy is a novel method for the surgical management of patients with cervical cancer. Sentinel nodes have a higher chance of harbouring metastases than non-sentinel nodes. Assessment of sentinel nodes provides an opportunity to stage patients intraoperatively and avoid complete pelvic lymph node d...
journal_title:Journal of clinical pathology
pub_type: 杂志文章,评审
doi:10.1136/jcp.2007.054031
更新日期:2009-12-01 00:00:00