Abstract:
CONTEXT:The addition of cetuximab to first-line chemotherapy substantially prolonged survival in patients with advanced non-small cell lung cancer whose tumors expressed high levels of epidermal growth factor receptor (EGFR; immunohistochemistry score of ≥200 on a scale of 0-300). OBJECTIVE:To evaluate the interobserver reproducibility of this EGFR immunohistochemistry scoring system, based on both the tumor cell membrane staining intensity (graded 0-3+) and the percentage of cells staining at each intensity. DESIGN:In parts 1 (initial feasibility study) and 2 of this 2-part round robin test, sections of different non-small cell lung cancer tissue microarrays were stained in a central reference laboratory. Following reference evaluation, EGFR expression in 30 selected tumor cores was characterized in serial sections by lung cancer pathology specialists. The reproducibility of scoring by different raters was assessed. Analysis of between-rater agreement was based on the allocation of EGFR immunohistochemistry scores into low- (<200) and high- (≥200) EGFR expression groups. RESULTS:After discussion with raters of the issues impacting reproducibility identified in part 1 and following adjustment of processes, part 2 of the round robin test showed a high interobserver agreement in EGFR immunohistochemistry scoring, with an overall concordance rate of 90.9% and a mean κ coefficient of 0.812. Specimens with a reference EGFR immunohistochemistry score of lower than 200 and of 200 or higher showed mean concordance rates of 94.7% and 85.6%, respectively. CONCLUSIONS:After appropriate training, assessing EGFR expression by this immunohistochemistry-based method allowed a highly reproducible allocation of non-small cell lung cancers into clinically relevant high- or low-EGFR expression groups.
journal_name
Arch Pathol Lab Medjournal_title
Archives of pathology & laboratory medicineauthors
Rüschoff J,Kerr KM,Grote HJ,Middel P,von Heydebreck A,Alves VA,Baldus SE,Büttner R,Carvalho L,Fink L,Jochum W,Lo AW,López-Ríos F,Marx A,Molina TJ,Olszewski WT,Rieker RJ,Volante M,Thunnissen E,Wrba F,Celik I,Stördoi
10.5858/arpa.2012-0605-OAsubject
Has Abstractpub_date
2013-09-01 00:00:00pages
1255-61issue
9eissn
0003-9985issn
1543-2165journal_volume
137pub_type
杂志文章abstract::Yeast forms of Blastomyces dermatitidis typically range from 8 to 20 microm in largest diameter. We report a rare case of primary pulmonary blastomycosis with an unusual morphology, in which we found significant numbers of large yeast forms ranging from 30 to 35 microm in diameter. To our knowledge, this is only the s...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/0003-9985(2001)125<0663:BDWLYF>2.0.CO;2
更新日期:2001-05-01 00:00:00
abstract:CONTEXT:-Small glandular proliferations of the breast encompass a variety of benign, atypical, and malignant lesions that show some overlapping morphologic features. Myoepithelial stains are frequently used in the workup of these lesions in order to rule out or establish a diagnosis of invasive carcinoma. Some benign l...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.5858/arpa.2015-0289-SA
更新日期:2016-07-01 00:00:00
abstract:CONTEXT:Diagnostic use of immunohistochemistry has been extensively studied in prostate needle biopsy, but its use in routine practice and the quality assurance and associated cost have not been previously addressed. OBJECTIVE:To examine the routine use of immunohistochemistry in prostate biopsies in a tertiary academ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.5858/arpa.2012-0145-OA
更新日期:2013-04-01 00:00:00
abstract::The importance of demonstrating linearity for a clinical chemistry analytical system has caused considerable debate. Disagreement about the way linearity is demonstrated has led to some misunderstanding about just what linearity means to the analytical goals. In many cases where linearity is evaluated by statistical m...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:
更新日期:1992-07-01 00:00:00
abstract:CONTEXT.—:Atypical ductal hyperplasia (ADH) is a challenging diagnosis defined by cytologic and architectural features that carries an increased risk of subsequent carcinoma when diagnosed in isolation. In addition, ADH may secondarily involve benign breast lesions, wherein it carries variable clinical significance. O...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.5858/arpa.2018-0221-RA
更新日期:2018-10-01 00:00:00
abstract:CONTEXT:Dysregulation of mediators of apoptosis is associated with carcinogenesis. For biliary duct cancers, p53 gene mutation is an important contributor to carcinogenesis. Mutations in the p53 gene affect transcription of the Fas gene, resulting in lack of Fas expression on cell membrane. It has been previously shown...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165(2005)129<481:ROAIC>2.0.CO;2
更新日期:2005-04-01 00:00:00
abstract:CONTEXT:Molecular diagnostic applications that use microarrays to analyze large numbers of genes simultaneously require high-quality mRNA. As these genome-wide expression assays become more commonly used in medical practice, pathologists and oncologists will benefit from understanding the importance of obtaining high-q...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.1043/1543-2165(2007)131[1805:THFGEA]2.0.CO;2
更新日期:2007-12-01 00:00:00
abstract::The interrelationship between lymphocytes and hepatocytes was examined by light and electron microscopy, using epoxy-resin embedded thick and thin sections of biopsy liver tissues from patients with chronic persistent hepatitis (CPH) and chronic active liver disease (CALD). Close apposition of lymphocytes with hepatoc...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1977-06-01 00:00:00
abstract::Considering the variety of aberrant locations in which ectopic parathyroid adenomas may be found, these neoplasms can be difficult to identify and treat surgically. The results of radiographic and cytologic studies may lead to confusion of these neoplasms with lesions of thyroid origin. We present a case of an ectopic...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/0003-9985(2002)126<1541:EPAIST>2.0.CO;2
更新日期:2002-12-01 00:00:00
abstract:CONTEXT:Genomic medicine is revolutionizing patient care. Physicians in areas as diverse as oncology, obstetrics, and infectious disease have begun using next-generation sequencing assays as standard diagnostic tools. OBJECTIVE:To review the role of pathologists in genomic testing as well as current educational progra...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.5858/arpa.2013-0359-SA
更新日期:2014-04-01 00:00:00
abstract::beta-Aminopropionitrile (BAPN) administered to rats has caused exostosis formation at sites of muscle attachment and also caused delay in the healing of soft tissue wounds and of bone fractures. Since phenytoin sodium has an opposite effect on wound healing, bone fractures, and the tensile strength of connective tissu...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1977-02-01 00:00:00
abstract::A premature male neonate, born at the 25th gestational week, developed pneumonia six days after delivery and died. Postmortem examination of the lungs revealed giant cell pneumonia with intranuclear inclusion bodies; varicella zoster infection was confirmed by immunoperoxidase stain using monoclonal antibody to varice...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1989-02-01 00:00:00
abstract::In this article, we review prostatic lymphomas and discuss the differential diagnosis of high-grade malignant neoplasms of the prostate. We illustrate this with a case of a 46-year-old man seen with lower urinary tract obstruction who had diffuse involvement by a high-grade malignancy on prostate biopsy. Morphologic e...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.5858/arpa.2014-0276-CC
更新日期:2014-10-01 00:00:00
abstract:CONTEXT.—:Data regarding the clinical impact of subspecialist pathology review of appendiceal neoplasms are limited. OBJECTIVE.—:To determine whether pathology review by gastrointestinal pathologists at a tertiary-care referral center resulted in significant changes in the diagnosis and clinical management of appendic...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.5858/arpa.2019-0214-OA
更新日期:2020-06-01 00:00:00
abstract::Laboratories contemplating either the addition of new molecular tests or modifying methods approved by the Food and Drug Administration for human papillomavirus testing should be aware of a variety of procedural, performance, and regulatory issues surrounding such activity. Diagnostic medical laboratory testing in the...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.1043/1543-2165(2003)127<978:AQRRAM>2.0.CO;2
更新日期:2003-08-01 00:00:00
abstract::Granular cell tumors occur in a variety of sites, including the breast (6%). Origins from histiocytic, myogenic, fibroblastic, and neurogenic elements have been proposed. Female predominance suggests that estrogenic hormones are involved. Four granular cell tumors of the breast and one in an axillary lymph node were s...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1984-11-01 00:00:00
abstract:CONTEXT:- Pathologists routinely assess Ki67 immunohistochemistry to grade gastrointestinal and pancreatic neuroendocrine tumors. Unfortunately, manual counts of the Ki67 index are very time consuming and eyeball estimation has been criticized as unreliable. Manual Ki67 counts performed by cytotechnologists could poten...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.5858/arpa.2017-0203-OA
更新日期:2018-03-01 00:00:00
abstract::The pathologic correlate of the clinical terms subendocardial and transmural applied to myocardial infarcts is uncertain. To examine this question, we reviewed the morphology of 204 hearts with single myocardial infarcts studied at autopsy after coronary arteriography and fixation in distention. The thickness of survi...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1986-05-01 00:00:00
abstract::We report a case of silicone-induced endocarditis as a newly recognized complication of transvenous cardiac pacing catheterization. Silicone was found embedded in thrombotic vegetations on the tricuspid valve of a patient who had a long-standing pacing catheter in the right side of his heart. Scanning electron microsc...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1986-01-01 00:00:00
abstract::We studied a unique case of osteosarcoma of the testis. The tumor either originated from indifferent mesenchymal cells, or it represents a one-sided monomorphic development of a teratoma. ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1981-01-01 00:00:00
abstract:CONTEXT:Identification of patients is one of the first steps in ensuring the accuracy of laboratory results. In the United States, hospitalized patients wear wristbands to aid in their identification, but wristbands errors are frequently found. OBJECTIVE:To investigate if continuous monitoring of wristband errors by p...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/0003-9985(2002)126<0809:CWMOYD>2.0.CO;2
更新日期:2002-07-01 00:00:00
abstract::Mantle cell lymphoma (MCL) is a non-Hodgkin lymphoma with a poor prognosis that may be confused with less aggressive diseases, such as small lymphocytic lymphoma and follicular lymphoma. In many cases immunophenotyping, particularly analysis of reactivity for CD5 and CD10, is an important adjunct to morphology that us...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.1043/1543-2165(2008)132[1346:AUCOMC]2.0.CO;2
更新日期:2008-08-01 00:00:00
abstract::In this report, we describe a highly unusual case of glandular malignant peripheral nerve sheath tumor presenting as a neck mass in a previously healthy 29-year-old man. Grossly, the tumor was found to arise from a swollen peripheral nerve trunk. The tumor was largely composed of spindle cells that demonstrated marked...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.1043/0003-9985(2000)124<1364:GMPNST>2.0.CO;2
更新日期:2000-09-01 00:00:00
abstract::Chlamydia trachomatis and the genital mycoplasmas are significantly prevalent in sexually active women. How these organisms may affect the outcome of pregnancy and the neonate was the principal thrust of this investigation. Placenta, liver, and lung tissue were cultured from Mycoplasma hominis, Ureaplasma urealyticum,...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1988-07-01 00:00:00
abstract::An unprecedented presentation of multicentric paraganglioma in a 48-year-old man is described. One of the paragangliomas, originally diagnosed as a carcinoid tumor, presented as a lung mass and was removed. Four years later, an intravagal paraganglioma was discovered. The lung and intravagal tumors had identical morph...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1996-12-01 00:00:00
abstract::The demands for information retrieval, processing, and synthesis placed on all providers of health care have increased dramatically in the last several decades. Although systems have been developed to capture charge-related data in support of cost reimbursement, there has been a conspicuous lack of attention paid to i...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1987-07-01 00:00:00
abstract:CONTEXT.—:Ossifying fibromyxoid tumor (OFMT) is a rare, slow-growing mesenchymal neoplasm of uncertain histogenesis with intermediate malignant potential. OBJECTIVE.—:To highlight the most important diagnostic features, including morphologic, immunohistochemical, and molecular findings; to provide comparisons to other...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.5858/arpa.2019-0371-RA
更新日期:2019-12-01 00:00:00
abstract::Quality improvement in blood collection centers has been a priority of regulatory and accrediting agencies for the past several years. The Food and Drug Administration and the American Association of Blood Banks have developed guidelines for quality assurance activities. Inspection programs have focused on evaluation ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/0003-9985(1999)123<0576:TPSAQS>2.0.CO;2
更新日期:1999-07-01 00:00:00
abstract::We present an autopsy case of a 29-week-old male fetus with a very unusual set of congenital granular cell tumors, including gingival epulis and granular cell lesions of the kidneys, lung, heart, esophagus, small and large intestine, thyroid, adrenals, spleen, urinary bladder, testis, pituitary, and leptomeninges. The...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:
更新日期:1991-09-01 00:00:00
abstract::Primary synovial sarcoma rarely originates in the renal parenchyma. When this occurs, origin of this unusual tumor type has been the subject of debate in the literature, with a suggestion that previously reported cases may be more correctly described as renal cell carcinoma with sarcomatoid dedifferentiation. Synovial...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165(2005)129<238:PRSSCB>2.0.CO;2
更新日期:2005-02-01 00:00:00