Abstract:
:The existence of facultative stem cells in the liver has been advocated based on observations from models of carcinogenesis in rat liver. Observations of human liver material from cases of fulminant hepatitis have shown the presence of ductular hepatocytes expressing markers of both hepatocytes and bile duct cells. We describe the morphologic features and antigenic expression of a population of ductular hepatocytes identified in a patient with end-stage cirrhosis resulting from hepatitis B infection and secondary biliary cirrhosis. By conventional light microscopy and electron microscopy, ductular hepatocytes were seen to form pseudoductules within periportal areas. Using immunohistochemical methods, these ductular hepatocytes were found to be positive for both the hepatitis B surface antigen and bile duct epithelial cytokeratin, phenotypic markers classically restricted to expression on hepatocytes and bile duct epithelium, respectively. These findings show definitively that ductular hepatocytes are intermediate cells bearing morphologic and phenotypic characteristics of both hepatocytes and bile duct epithelium. The presence of these cells indicates the existence of facultative stem cells in the adult mammalian liver.
journal_name
Arch Pathol Lab Medjournal_title
Archives of pathology & laboratory medicineauthors
Vandersteenhoven AM,Burchette J,Michalopoulos Gsubject
Has Abstractpub_date
1990-04-01 00:00:00pages
403-6issue
4eissn
0003-9985issn
1543-2165journal_volume
114pub_type
杂志文章abstract::We report an autopsy case of pulmonary hypertension associated with systemic lupus erythematosus in a 48-year-old woman. After 8-year follow-up under a definite diagnosis of systemic lupus erythematosus, she experienced gradually developing exertional dyspnea with palpitation. Her chest x-ray showed clear lung fields ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1998-05-01 00:00:00
abstract:CONTEXT:The correlation of the diagnosis made at intraoperative consultation (IC) with the final diagnosis is one of the cornerstones of quality assurance in the anatomic pathology laboratory. OBJECTIVE:To review correlation of IC diagnoses with final diagnoses during a 1-year period in a regionalized, multisite hospi...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165(2008)132[29:IFDCRT]2.0.CO;2
更新日期:2008-01-01 00:00:00
abstract:CONTEXT:Clear cell chondrosarcoma (CCC) is commonly considered to be a low-grade subtype of chondrosarcoma. However, a few cases of CCC behave as high-grade lesions (with early metastases or multiple/synchronous locations). OBJECTIVE:To investigate morphologic features that can help predict the aggressiveness of these...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165(2006)130[1673:ACCCDD]2.0.CO;2
更新日期:2006-11-01 00:00:00
abstract:CONTEXT:Cervical cancer affects 12 000 women in the United States annually. However, despite its prevalence, there remains no good methodology to detect its recurrence. OBJECTIVE:To identify the role of cervicovaginal high-risk human papilloma virus (hr-HPV) testing in predicting cervical cancer recurrence. DESIGN:Th...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.5858/arpa.2014-0534-OA
更新日期:2015-11-01 00:00:00
abstract::We describe a case of adenomatous polyp of the colon that harbored small foci of signet ring cell carcinoma. The patient was a 64-year-old woman with end-stage renal disease and sepsis who underwent colonoscopy to evaluate the possibility of pseudomembranous colitis. A polyp was found incidentally in the right colon a...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165(2003)127<1509:MFOSRC>2.0.CO;2
更新日期:2003-11-01 00:00:00
abstract::When two disposable serological pipettes with an external diameter of 1 cm are placed on the cutting surface on either side of the brain and the knife rides across them, it will cut even slices precisely 1 cm thick. Both coronal and horizontal slices can be cut as well as oblique slices for comparison with computerize...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1979-01-01 00:00:00
abstract::Fourteen cases of toxoplasmosis in subjects at autopsy with acquired immunodeficiency syndrome are reviewed. Death was related to toxoplasmosis in four cases: in three from central nervous system complications and in one case from myocarditis. In six cases the infection was identified outside of the central nervous sy...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1988-12-01 00:00:00
abstract::It is well known that neoplastic cells of several organs produce amylases. However, to our knowledge, alpha-amylase expression has not been reported in hepatic neoplasms. In the present study, we surveyed the expression of alpha-amylase isoenzymes in cholangiocarcinoma (CCC) (n = 18) and hepatocellular carcinoma (n = ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1993-02-01 00:00:00
abstract::We identified large histiocytes as a prominent feature in the choroid of eyes obtained at autopsy in seven of nine patients who died of leukemia. The eyes of four of the seven patients affected had leukemic choroidal infiltrates, and a majority had similar-appearing histiocytes identified in spleen or bone marrow. The...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1990-02-01 00:00:00
abstract:CONTEXT:Perineural invasion and vascular invasion may be adverse prognostic factors in patients with oral cavity squamous cell carcinoma. However, the incidence of perineural and vascular invasion varies in the literature, and the use of immunohistochemistry to enhance their detection has not been evaluated in oral cav...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165(2005)129<354:PAVIIO>2.0.CO;2
更新日期:2005-03-01 00:00:00
abstract::The purpose of this review is to address some common problems involving the diagnosis of trophoblastic lesions. ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.1043/1543-2165(2008)132[168:DPWTL]2.0.CO;2
更新日期:2008-02-01 00:00:00
abstract::We describe the clinical, radiologic, and pathologic features of four cases of intraosseous lipoma. The patients ranged in age from 37 to 48 years, and three of them were men. Three patients presented with pain; in the fourth patient, the lesion was discovered incidentally. The involved bones were distal radius (in on...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1992-09-01 00:00:00
abstract::A study was undertaken of 14 autopsy cases with pigmented rib cartilage. Twelve of these patients had been treated with levodopa because of Parkinson's disease for at least 6 years, and two had been treated with methyldopa because of essential hypertension for 19 years. Thirty-two percent of the autopsy cases of Parki...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1994-05-01 00:00:00
abstract:CONTEXT.—:The College of American Pathologists guidelines recommend testing additional tumor foci in multifocal invasive breast carcinomas for the biomarkers estrogen receptor (ER), progesterone receptor, and HER2 only if the carcinomas show different morphologies or grades. OBJECTIVE.—:To assess clinical significance...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.5858/arpa.2017-0494-OA
更新日期:2019-02-01 00:00:00
abstract::Epithelioid sarcomas are rare, mesenchymal tumors of unknown histogenesis and display multidirectional differentiation, which is predominantly epithelial. They have no normal cellular counterpart and differ from both synovial sarcoma and carcinoma. They account for less than 1% of all soft tissue sarcomas and are usua...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.1043/1543-2165-133.5.814
更新日期:2009-05-01 00:00:00
abstract:CONTEXT:Fine-needle aspiration has been the initial step in the workup of thyroid nodular lesions and has successfully reduced the number of unnecessary surgeries and improved preoperative malignancy detection. However, up to one-third of cases fall in the diagnostically "indeterminate group," which poses a patient-man...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.5858/arpa.2014-0245-RA
更新日期:2015-12-01 00:00:00
abstract::Investigations were carried out in order to determine whether animals with spontaneous diabetes are prone to develop skeletal lesions comparable to those found in diabetic human subjects. The present report deals with the ultrastructure of the cartilage of the hip joint of diabetic Chinese hamsters and nondiabetic con...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1976-01-01 00:00:00
abstract::Ten cases of gynecomastia were studied by electron microscopy. The ducts showed proliferation of both epithelial and myoepithelial cells. Intracytoplasmic lumina, previously thought to be a feature of malignant breast lesions, were seen. Squamous metaplasia was observed in some cases. The stroma showed fibroblasts, my...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1979-11-01 00:00:00
abstract:CONTEXT:In the 19th and early 20th centuries, cancer was defined by the demonstration of invasion and metastases, based upon gross findings at surgery or autopsy. Although histopathologic examination of tumors became possible with greater and greater resolution over time, the definition of cancer remained the same. Tum...
journal_title:Archives of pathology & laboratory medicine
pub_type: 传,历史文章,杂志文章
doi:10.5858/arpa.2011-0567-HP
更新日期:2012-11-01 00:00:00
abstract::Allogeneic marrow transplants from genotypically HLA-identical siblings have become lifesaving therapy for patients with various congenital and acquired diseases of the immune and hematopoietic systems. Unfortunately, less than 30% of patients in the United States have an HLA-identical sibling; therefore, many are den...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1991-03-01 00:00:00
abstract:CONTEXT:There is no current standard among myopathologists for reporting muscle biopsy findings. The National Institute of Neurological Disorders and Stroke has recently launched a common data element (CDE) project to standardize neuromuscular data collected in clinical reports and to facilitate their use in research. ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.5858/arpa.2014-0453-OA
更新日期:2016-01-01 00:00:00
abstract::Recombinant DNA technology has already had a major impact on our understanding of microbiology, cell biology, and genetic diseases and it will certainly have extensive applications in laboratory medicine. The techniques of restriction endonuclease analysis of DNA, nucleic acid hybridization after electrophoretic separ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1983-10-01 00:00:00
abstract::Paraneoplastic disorders (PNDs) are remote effects of tumors that are unrelated to the size, location, metastases, or physiological activities of mature tissue of origin. Some of these disorders, such as fever and anemia, have been known for a long time. Other disorders, such as lymphopenia and low serum cholesterol l...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1978-01-01 00:00:00
abstract::New Frontiers in Pathology is a unique educational event intended to meet the ongoing educational needs of practicing pathologists. Continuous medical education (CME) is required for maintenance of licensure by virtually all state licensing bodies. Satisfying CME requirements hinges on earning a minimum number of Amer...
journal_title:Archives of pathology & laboratory medicine
pub_type:
doi:10.5858/arpa.2012-0234-ED
更新日期:2012-08-01 00:00:00
abstract::Serum samples from 76 patients with neutropenia and 34 control subjects were analyzed for levels of granulocyte colony-stimulating factor, granulocyte-macrophage colony-stimulating factor, interleukin 1 alpha, and tumor necrosis factor beta. Clinical correlates and duration of neutropenia were determined insofar as po...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1994-12-01 00:00:00
abstract::A 55-year-old woman developed symptoms suggestive of hepatitis 12 weeks after first receiving methyldopa for hypertension. Liver biopsy showed chronic aggressive hepatitis with subacute hepatic necrosis. Methyldopa was discontinued, but after exhibiting transient clinical improvement, the patient's condition progressi...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1976-03-01 00:00:00
abstract:CONTEXT:The differentiation between iron deficiency and a thalassemia syndrome is an important consideration in the investigation of microcytic anemia. OBJECTIVE:An established statistical method was used to demonstrate the importance of considering ethnic background in combination with mean cell volume (MCV) in the i...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/0003-9985(2000)124<1320:AATAIT>2.0.CO;2
更新日期:2000-09-01 00:00:00
abstract:CONTEXT.—:With increasing use and efficacy of antiretroviral therapy for human immunodeficiency virus (HIV) infection, deaths from acquired immunodeficiency syndrome (AIDS)-defining conditions have decreased. OBJECTIVE.—:To examine trends in the cause of death of HIV-infected patients who underwent autopsy at a major ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.5858/arpa.2019-0144-OA
更新日期:2020-05-01 00:00:00
abstract::Tumoral calcinosis is a rare ectopic calcification syndrome characterized by irregular soft tissue masses originally described as being found mainly in large joints. We report 3 cases of tumoral calcinosis that occurred in unusual locations, the metacarpophalageal and proximal interphalangeal joints of the hand. The p...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165(2006)130[548:TCOTHT]2.0.CO;2
更新日期:2006-04-01 00:00:00
abstract:OBJECTIVE:To investigate ras gene alteration in human gastric adenocarcinomas and its potential relationship to ras signal transduction mediators. DESIGN:Genomic DNA from 104 gastric tumors were analyzed by sequencing of polymerase chain reaction-amplified products for the presence of ras mutations. All the samples we...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/0003-9985(2002)126<1096:RGMAEO>2.0.CO;2
更新日期:2002-09-01 00:00:00