Abstract:
CONTEXT:Epidermal growth factor receptor (EGFR) mutations have been identified as predictors of response to EGFR tyrosine kinase inhibitors in non-small cell lung cancer. OBJECTIVE:To investigate the relationship of EGFR mutation status to the histologic subtype of adenocarcinoma according to the new International Association for the Study of Lung Cancer (IASLC)/American Thoracic Society (ATS)/European Respiratory Society (ERS) classification. DESIGN:We screened EGFR mutation in 200 consecutive lung adenocarcinoma resection specimens diagnosed between 2008 and 2011. RESULTS:Among 200 lung adenocarcinomas, EGFR mutations were identified in 41 tumors (20.5%). The mean age in the EGFR-mutant group was 64.8 years and this group consisted of 78% females and 22% males. Most patients with EGFR-positive lung cancers were never-smokers (51%) as compared to 8% with EGFR-negative cancers (P < .001). The most common mutations identified in our population were deletions in exon 19 (22 patients) and L858R in exon 21 (12 patients). Five patients had double mutations. The predominant pattern of adenocarcinoma was lepidic (44%) in EGFR-mutant lung cancers as compared to 69% with acinar pattern in EGFR wild-type lung cancers (P < .001). Of 22 minimally invasive adenocarcinomas, 8 (36%) had EGFR mutations, accounting for 20% of adenocarcinomas with EGFR mutations (P < .05). CONCLUSIONS:Based on the new IASLC/ATS/ERS classification, the predominant subtype of adenocarcinoma was lepidic (44%) in EGFR-mutant lung cancers (P < .001). However, histologic subtype should not be used to exclude patients from tyrosine kinase inhibitor therapy, since EGFR mutations are found in lung adenocarcinomas of other subtypes.
journal_name
Arch Pathol Lab Medjournal_title
Archives of pathology & laboratory medicineauthors
Villa C,Cagle PT,Johnson M,Patel JD,Yeldandi AV,Raj R,DeCamp MM,Raparia Kdoi
10.5858/arpa.2013-0376-OAsubject
Has Abstractpub_date
2014-10-01 00:00:00pages
1353-7issue
10eissn
0003-9985issn
1543-2165journal_volume
138pub_type
杂志文章abstract:OBJECTIVE:To examine the hypothesis that older hospitalized patients have higher laboratory costs than younger patients in the same severity-adjusted diagnosis-related group (DRG). DESIGN:We obtained hospital case mix data sets (1995-1997) from the Massachusetts Division of Health Care Finance and Policy. We selected ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/0003-9985(2003)127<169:AALCFH>2.0.CO;2
更新日期:2003-02-01 00:00:00
abstract::Frozen section is a prominent point of intersection between surgeons and pathologists. It is regarded as the most definitive--but not the sole--form of intraoperative consultation. Its role in tissue triage, diagnosis, and intraoperative management should not be misconstrued as a shortcut to a definitive diagnosis. Al...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165-133.7.1135
更新日期:2009-07-01 00:00:00
abstract:OBJECTIVE:To determine if molecular epidemiologic techniques, including comparative automated DNA sequencing of polymorphic virulence genes, could be used in the course of a bacterial disease outbreak to unambiguously determine clonal relationships among implicated strains. DESIGN:Strains recovered from all patients w...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1994-02-01 00:00:00
abstract::Stereotactically directed needle biopsy of central nervous system lesions is a widely used diagnostic procedure with low morbidity and mortality. Diagnostic tissue is obtained in most instances. As a part of the College of American Pathologists Practical Topics in Neuropathology series, the following report summarizes...
journal_title:Archives of pathology & laboratory medicine
pub_type: 指南,杂志文章,实务指引
doi:
更新日期:1997-05-01 00:00:00
abstract::A peroxidase--antiperoxidase technique for S100 protein has been applied to 122 breast lesions from 122 patients. These included 35 cases of fibrocystic disease, 16 cases of sclerosing adenosis, 24 cases of papilloma and papillomatosis, 43 intraduct carcinomas, and four intralobular carcinomas. In fibrocystic disease,...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1987-01-01 00:00:00
abstract::Two of three patients with erythropoietic protoporphyria showed pigment deposits with typical red porphyrin fluorescence on liver biopsy specimens. Birefringence of this pigment by polarized light is due to its crystalline nature, as demonstrated by electron microscopy. There was slight portal inflammation in these ca...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1976-11-01 00:00:00
abstract::The objective of this study was to evaluate conjunctival nevi for p53 gene mutations. We studied 11 conjunctival nevi by immunohistochemistry with the DO7 monoclonal p53 antibody as well as the cell proliferation marker, MIB1. Of the 11 cases, 2 were negative, 2 had less than 1%, and 7 had more than 2% p53 immunoposit...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1996-04-01 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::In erythroblasts of varying maturational stages, cytoplasm stained bright yellow with bromochlorophenol blue. Since this staining reaction appeared to be distinctive among various cytological types of marrow cells, it may constitute a rapid method for visualization of cells of erythroid origin. ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1979-10-01 00:00:00
abstract:CONTEXT:Bone marrow examination is essential for diagnosis and staging of hematologic disorders. Traditionally, the bone marrow biopsy and aspirate are obtained with 2 needles at 2 separate sites. This approach is associated with significant discomfort, procedural time, and occasionally, morbidity. Although previous ob...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.5858/arpa.2012-0046-OA
更新日期:2013-07-01 00:00:00
abstract:CONTEXT:KRAS mutations can be detected in approximately 30% to 40% of all patients with colorectal cancer. Several recent studies have shown that patients with KRAS mutations in codons 12 or 13 in metastatic tumors do not benefit from anti-epidermal growth factor receptor therapy with cetuximab or panitumumab. OBJECTI...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.1043/1543-2165-133.10.1600
更新日期:2009-10-01 00:00:00
abstract:CONTEXT:Increased thymidylate synthase expression is a marker for decreased survival in colorectal cancer. OBJECTIVE:Thymidylate synthase localizes to both the nucleus and cytoplasm, but how the relationship of these expression levels affects colon cancer outcome has yet to be determined. DESIGN:Using AQUA, we assess...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165-132.11.1746
更新日期:2008-11-01 00:00:00
abstract::We report a case of "uncombable hair syndrome" that occurred in a boy who had no other abnormalities. The diagnosis was clinically suspected and confirmed by examination of the scalp hair, which was treated with a bath of gold. Scanning electron microscopy was used for examination. The main defect of the hair was a lo...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1987-08-01 00:00:00
abstract::Aortic valve vegetation were studied in rabbits before and after intravenous injection of streptococcus mitis. Uninfected vegetation sections revealed compact eosinophilic masses with smooth-appearing edges and scattered polymorphonuclear leukocytes inside and on the surface. Scanning electron microscopic views demons...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1978-10-01 00:00:00
abstract::The postmortem tissue distribution of cholesterol precursors, squalene, and methyl sterols was quantitated in ten human subjects by the use of gas-liquid chromatography. Five methyl sterol subfractions were found, with each organ having a pattern of its own. The mean esterification percentage of the methyl sterol mixt...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1980-01-01 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 52-year-old man, suffering for years from malabsorption due to endemic sprue, developed progressive bowel dysfunction, ie, recurrent ileus and intestinal pseudo-obstruction. Because of partial volvulus formation, ileocecal resection was performed. Histopathologic examination of the resected specimen revealed signs o...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1990-01-01 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::Glomeruli from two patients with metabolic disease were cultured and examined ultrastructurally. One patient with neuronal ceroid lipofuscinosis showed intracellular membrane alterations that we have never seen in normal glomerular cells. In contrast, ultrastructural features of glomerular cells from a patient with no...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1981-05-01 00:00:00
abstract::The College of American Pathologists' enzyme survey permits the evaluation of the quality of enzyme analyses in clinical laboratories. Animal source enzymes for lactate dehydrogenase, aspartate aminotransferase, alanine aminotransferase, and creatine kinase are satisfactory as supplements for enzyme survey serum, sinc...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1984-12-01 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:OBJECTIVE:To develop a multi-institutional reference database of extraneous tissue (contaminants) in surgical pathology. DESIGN:In 1994, participants in the College of American Pathologists Q-Probes quality improvement program performed prospective and retrospective evaluations of extraneous tissue found in surgical p...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1996-11-01 00:00:00
abstract::In 112 patients with mixed tumors of the salivary glands, 94 tumors were located in parotid glands, 11 in submandibular salivary glands, and 7 in monor palatal salivary glands. Capsular ingrowth, a characteristic growth pattern, may explain the frequency of multilobulation and capsular defects in these tumors, particu...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1976-05-01 00:00:00
abstract:CONTEXT:The immunophenotypic profile of basophils is not yet fully established, and the immunophenotypic changes in chronic myelogenous leukemia are not fully characterized. OBJECTIVE:To establish a comprehensive immunophenotypic spectrum of normal basophils and to assess the range of immunophenotypic aberrations of b...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165(2008)132[813:ISOBBM]2.0.CO;2
更新日期:2008-05-01 00:00:00
abstract::In 4% formaldehyde-fixed, paraffin-embedded tissues, PAS negativity for mycobacteria in the literature has been axiomatic. However, recent observations of disseminated human mycobacteriosis have shown that intracellular (phagocytosed) organisms stained strongly positive with the routine PAS technique. This staining wa...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1984-05-01 00:00:00
abstract:CONTEXT:There is increasing interest in ensuring that physicians demonstrate the full range of Accreditation Council for Graduate Medical Education competencies. OBJECTIVE:To determine whether it is possible to develop a feasible and reliable multisource feedback instrument for pathologists and laboratory medicine phy...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/1543-2165-133.8.1301
更新日期:2009-08-01 00:00:00
abstract::We analyzed the autopsy records of 261 patients with breast carcinoma, who died at The Institute of Oncology, Ljubljana, Yugoslavia, for the presence of metastases to the central nervous system, particularly for the presence of leptomeningeal carcinomatosis. Metastases to the central nervous system were found in 41 (1...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:
更新日期:1991-05-01 00:00:00
abstract:OBJECTIVE:To review the current understanding of the pathophysiology of antithrombin deficiency and its role in congenital thrombophilia. Recommendations for diagnostic testing of antithrombin function and concentration, derived from the medical literature and consensus opinions of recognized experts in the field, are ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:10.1043/0003-9985(2002)126<1326:AD>2.0.CO;2
更新日期:2002-11-01 00:00:00
abstract::In this article, I review the submicroscopic organization of the human spermatozoon, the functional role of its individual organelles in motility, penetrating ability, and fusogenic and fertilizing competence, and its pathology as a cause of male infertility. ...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章,评审
doi:
更新日期:1992-04-01 00:00:00
abstract::A number of classes of endogenous antibodies, including heterophile, rheumatoid factor, and autoantibodies, can interfere with immunoassay measurements of many different analytes. Heterophile and rheumatoid factor antibody interferences have been described previously for the AxSYM cardiac troponin I assay. Several com...
journal_title:Archives of pathology & laboratory medicine
pub_type: 杂志文章
doi:10.1043/0003-9985(2002)126<0606:FPACTI>2.0.CO;2
更新日期:2002-05-01 00:00:00