abstract：:The development of chemoresistance in a variety of cancers seems related to overexpression of the P-glycoprotein (P-gp) drug pump. Nephroblastoma, the most common malignant renal tumor of childhood, usually is responsive to treatment, and prognosis is favorable in most cases. However, the disease in a subset of patien...

journal_title：American journal of clinical pathology

authors： Camassei FD,Arancia G,Cianfriglia M,Bosman C,Francalanci P,Ravà L,Jenkner A,Donfrancesco A,Boldrini R

更新日期：2002-03-01 00:00:00

abstract：:Mantle cell lymphoma (MCL) is characterized by typical morphologic features and the CD5+, CD23-immunophenotype. However, some morphologically typical MCLs are CD23+. A t(11;14)(q13;q32) translocation is frequently found in MCL, leading to overexpression of cyclin D1. We studied the expression of cyclin D1 in 50 small ...

journal_title：American journal of clinical pathology

authors： Peghini PE,Fehr J

更新日期：2002-02-01 00:00:00

abstract：:Several adulterants are used to mask tests for abused drugs in urine. Adulterants such as "Klear" and "Whizzies" contain potassium nitrite, and "Urine Luck" contains pyridinium chlorochromate (PCC). The presence of these adulterants cannot be detected by routine specimen integrity checks (pH, specific gravity, and tem...

journal_title：American journal of clinical pathology

authors： Dasgupta A,Wahed A,Wells A

更新日期：2002-02-01 00:00:00

abstract：:Campylobacter medium (CAMPY, Becton Dickinson [BD] Microbiology Systems, Cockeysville, MD) and Vancomycin Screen Agar (VSA, BD) were compared for their ability to screen for vancomycin-resistant Enterococcus (VRE) from primary plates. A microdilution minimal inhibitory concentration (MIC) assay (Pasco, BD) served as t...

journal_title：American journal of clinical pathology

authors： Shigei J,Tan G,Shiao A,de la Maza LM,Peterson EM

更新日期：2002-01-01 00:00:00

abstract：:In the thymus, the relationship between lymphofollicular hyperplasia and mucosa-associated lymphoid tissue (MALT)-type lymphoma is uncertain. We analyzed 14 cases with a diagnosis of thymic follicular hyperplasia in patients with connective tissue disease (n = 2), myasthenia gravis (n = 11), or both (n = 1). In 11 cas...

journal_title：American journal of clinical pathology

authors： Parrens M,Dubus P,Danjoux M,Jougon J,Brousset P,Velly JF,de Mascarel A,Merlio JP

更新日期：2002-01-01 00:00:00

abstract：:Our purpose was to evaluate the clinical, histologic, and histochemical staining characteristics of intestinal metaplasia (IM) at an endoscopically normal-appearing esophagogastric junction (IM-EGJ) compared with IM in a columnar-lined esophagus (IM-CLE). A prospective study included 253 patients referred for elective...

journal_title：American journal of clinical pathology

authors： van Sandick JW,van Lanschot JB,van Felius L,Haringsma J,Tytgat GN,Dekker W,Drillenburg P,Offerhaus GJ,ten Kate FJ

更新日期：2002-01-01 00:00:00

abstract：:In diagnostic pathology, decision-making skills are used to match the facts of a particular case to a diagnostic category. Ideally the diagnosis is established with "beyond a reasonable doubt" certainty, but substantial uncertainty orfrank diagnostic error can afflict the diagnostic process for a variety of reasons. M...

journal_title：American journal of clinical pathology

authors： Foucar E

更新日期：2001-12-01 00:00:00

abstract：:To facilitate the differential diagnosis of poorly differentiated metastatic carcinomas of unknown primary site, we evaluated p63 and cytokeratin (CK) 5/6 as immunohistochemical markers for squamous cell carcinomas. The study cases were as follows: squamous cell carcinoma of the lungs, head/neck, esophagus, cervix ute...

journal_title：American journal of clinical pathology

authors： Kaufmann O,Fietze E,Mengs J,Dietel M

更新日期：2001-12-01 00:00:00

abstract：:Whipple disease is a rare, chronic multisystem disease associated with the recently characterized organism Tropheryma whippelii. Extraintestinal manifestation involving the central nervous system, heart, and joints occasionally occurs. Involvement of the abdominal lymph nodes, especially the mesenteric and periaortic ...

journal_title：American journal of clinical pathology

authors： Alkan S,Beals TF,Schnitzer B

更新日期：2001-12-01 00:00:00

abstract：:There are few studies that examine prevalence, quantity, and cellular proclivity of latent human herpesvirus 6 (HHV-6) in healthy populations. We examined 69 tonsils with paired blood specimens from children without evidence of acute infection. By polymerase chain reaction (PCR), HHV-6 was detected at low levels in 10...

journal_title：American journal of clinical pathology

authors： Roush KS,Domiati-Saad RK,Margraf LR,Krisher K,Scheuermann RH,Rogers BB,Dawson DB

更新日期：2001-11-01 00:00:00

abstract：:We studied the presence of surfactant protein A (Sp-A) immunoreactivity and messenger RNA in 62 normal and abnormal breast samples. Sections were immunostained with polyclonal anti-Sp-A antibody. The association between Sp-A immunoreactivity and histologic grade of 32 invasive ductal carcinomas was assessed by 3 patho...

journal_title：American journal of clinical pathology

authors： Braidotti P,Cigala C,Graziani D,Del Curto B,Dessy E,Coggi G,Bosari S,Pietra GG

更新日期：2001-11-01 00:00:00

abstract：:We reviewed 500 consecutive soft tissue lesions referred for expert consultation to determine types of lesions and/or situations in which major discrepancies occur. Of 266 cases (53.2%) accompanied by a diagnosis, essential agreement with the second opinion was noted in 68%, minor discrepancy in 7%, and major discrepa...

journal_title：American journal of clinical pathology

authors： Arbiser ZK,Folpe AL,Weiss SW

更新日期：2001-10-01 00:00:00

abstract：:We describe 35 peripheral lymph nodes classified as mantle cell/marginal zone B-cell hyperplasia with clear cells using morphologic and immunologic findings. For the purpose of this study, we obtained clinical follow-up information and performed immunoglobulin gene rearrangement studies on paraffin sections by polymer...

journal_title：American journal of clinical pathology

authors： Hunt JP,Chan JA,Samoszuk M,Brynes RK,Hernandez AM,Bass R,Weisenburger DD,Müller-Hermelink K,Nathwani BN

更新日期：2001-10-01 00:00:00

abstract：:Adenomatous polyps are common neoplastic lesions of the large intestine. The risk of carcinoma increases with polyp size. Small polyps are typically totally embedded for histologic examination, but no standard method for sampling large, grossly benign polyps has been established. We reviewed grossly noninvasive adenom...

journal_title：American journal of clinical pathology

authors： Euscher ED,Niemann TH,Lucas JG,Kurokawa AM,Frankel WL

更新日期：2001-09-01 00:00:00

abstract：:We report 8 cases of hepatosplenic T-cell lymphoma (HSTCL) involving bone marrow and correlate histologic findings with disease progression. Immunophenotypic analysis demonstrated mature, aberrant gamma/delta T-cell immunophenotypes. Isochromosome 7q was identified in 4 cases; 1 case showed the t(7;14)(q34;q13). Seven...

journal_title：American journal of clinical pathology

authors： Vega F,Medeiros LJ,Bueso-Ramos C,Jones D,Lai R,Luthra R,Abruzzo LV

更新日期：2001-09-01 00:00:00

abstract：:The role of the HER2 receptor remains uncertain in the pathogenesis and progression of human prostate cancer. Previous studies have reported widely divergent rates for HER2 expression in primary prostate tumors, probably owing to significant methodologic differences in the studies. Few data exist about the frequency o...

journal_title：American journal of clinical pathology

authors： Reese DM,Small EJ,Magrane G,Waldman FM,Chew K,Sudilovsky D

更新日期：2001-08-01 00:00:00

abstract：:Vascular endothelial growth factor (VEGF) is one of the most potent mitogenic, highly specific tumor angiogenic factors, which acts via binding to 2 specific tyrosine kinase receptors. There are few studies analyzing VEGF receptor expression in prostate cancer cells, and results are contradictory. In an immunohistoche...

journal_title：American journal of clinical pathology

authors： Köllermann J,Helpap B

更新日期：2001-07-01 00:00:00

abstract：:We describe 2 male patients in whom hepatosplenic gamma/delta T-cell lymphoma (HSTL) developed 6 and 10 years after renal transplantation. The onset was abrupt with systemic symptoms, cytopenia, and hepatosplenomegaly. The histologic examination of the spleen (case 1), liver, and bone marrow revealed sinusoidal infilt...

journal_title：American journal of clinical pathology

authors： Khan WA,Yu L,Eisenbrey AB,Crisan D,al Saadi A,Davis BH,Hankin RC,Mattson JC

更新日期：2001-07-01 00:00:00

abstract：:Neuroendocrine tumors comprise a family of neoplasms with a wide range of morphologic, functional, and behavioral characteristics. Their diagnosis depends on the recognition of characteristic morphologic features and on the presence of markers indicative of neuroendocrine differentiation. Neuroendocrine tumors can be ...

journal_title：American journal of clinical pathology

authors： DeLellis RA

更新日期：2001-06-01 00:00:00

abstract：:The purpose of our study was to clarify the prognosis of lymphoepithelioma-like carcinoma (LELC) of the lung, which is rare. We analyzed the clinicopathologic features of 32 cases of pulmonary LELC and compared the cases with 84 cases of pulmonary non-LELC with available long-term follow-up information. The results sh...

journal_title：American journal of clinical pathology

authors： Han AJ,Xiong M,Gu YY,Lin SX,Xiong M

更新日期：2001-06-01 00:00:00

abstract：:Cytokeratin (CK) expression was studied in 22 sinonasal inverted papillomas. Columnar (respiratory) epithelium in inverted papillomas abundantly expressed CK7, CK8, CK18, and CK19. Immunoreactivity for CK5/14 and CK17 was found in basal and parabasal/suprabasal cells. Transitional (cuboidal) and squamous epithelium in...

journal_title：American journal of clinical pathology

authors： Schwerer MJ,Kraft K,Baczako K,Maier H

更新日期：2001-05-01 00:00:00

abstract：:The present study evaluated the origin of endothelial and epithelial cells, as well as of lymphocytes and macrophages, after lung transplantation. Biopsy specimens from patients who underwent lung and heart-lung transplantation and received organs of sex-mismatched donors were studied by means of nonisotopic in situ h...

journal_title：American journal of clinical pathology

authors： Bittmann I,Dose T,Baretton GB,Müller C,Schwaiblmair M,Kur F,Löhrs U

更新日期：2001-04-01 00:00:00

abstract：:We assessed the Sysmex UF-50 for reproducibility of results and carryover rate by performing between- and within-run precision analyses on 315 urine samples, evaluated the feasibility of using the UF-50 to measure urinary cellular and noncellular components by comparing results from the UF-50 with results of manual ur...

journal_title：American journal of clinical pathology

authors： Okada H,Sakai Y,Kawabata G,Fujisawa M,Arakawa S,Hamaguchi Y,Kamidono S

更新日期：2001-04-01 00:00:00

abstract：:Congenital-infantile fibrosarcoma (CIFS) is a relatively indolent sarcoma that should be distinguished from more aggressive spindle cell sarcomas of childhood. CIFSs have been found to have a novel recurrent reciprocal translocation t(12;15)(p13;q25) resulting in the gene fusion ETV6-NTRK3 (ETS variant gene 6; neurotr...

journal_title：American journal of clinical pathology

authors： Sheng WQ,Hisaoka M,Okamoto S,Tanaka A,Meis-Kindblom JM,Kindblom LG,Ishida T,Nojima T,Hashimoto H

更新日期：2001-03-01 00:00:00

abstract：:We studied whether laboratory confirmation of heparin-induced thrombocytopenia (HIT) can be improved after antigen clearance by determining free antibody and combining the results of an antigenic and a biologic assay. Blood samples taken over 40 days in 14 patients with HIT with thromboembolism underwent fluorescence-...

journal_title：American journal of clinical pathology

authors： Harenberg J,Wang L,Hoffmann U,Huhle G,Feuring M

更新日期：2001-03-01 00:00:00

abstract：:The role of fine-needle aspiration (FNA) in the diagnosis of breast carcinoma is established. We evaluated whether the degree of cellular dyscohesion and the nuclear grade in FNA material of breast carcinomas are reliable prognostic predictors for ipsilateral axillary lymph node metastasis. FNA specimens from 98 women...

journal_title：American journal of clinical pathology

authors： Schiller AB,Tadros TS,Birdsong GG,Grossl NA

更新日期：2001-02-01 00:00:00

abstract：:Wild-type apolipoprotein A-I (apo A-I)-derived amyloid commonly occurs in atherosclerotic plaques. To clarify apo A-I amyloid formation, plasma levels of apo A-I and cholesterol were related to the presence of amyloid in atherosclerotic plaques in 15 patients with peripheral atherosclerosis, subjected to arterial reco...

journal_title：American journal of clinical pathology

authors： Mucchiano GI,Jonasson L,Häggqvist B,Einarsson E,Westermark P

更新日期：2001-02-01 00:00:00

abstract：:Infusible platelet membranes (IPMs) prepared from fresh or outdated human platelets have been shown to correct prolonged bleeding times in thrombocytopenic rabbits. In previous trials, IPMs did not seem to be immunogenic and lacked dose-limiting toxicity. The present study was undertaken to explore whether the platele...

journal_title：American journal of clinical pathology

authors： Graham SS,Gonchoroff NJ,Miller JL

更新日期：2001-01-01 00:00:00

abstract：:We tested the hypothesis that extensively keratinized squamous intraepithelial lesions (SILs) are difficult to grade precisely by identifying 100 Papanicolaou smears with a keratinizing SIL that had been originally judged difficult to grade. Of these, 65 were confirmed as low-grade SIL (LSIL) or high-grade SIL (HSIL) ...

journal_title：American journal of clinical pathology

authors： Faquin WC,Brown FM,Krane JF,Renshaw AA,Cibas ES

更新日期：2001-01-01 00:00:00

abstract：:The "floral" variant of follicle center lymphoma (FCL) may be confused with progressive transformation of germinal centers or lymphocyte predominance Hodgkin lymphoma. Immunohistochemistry and gene rearrangement studies are usually sufficient to differentiate among these entities. We present 11 cases of floral FCL tha...

journal_title：American journal of clinical pathology

authors： Tiesinga JJ,Wu CD,Inghirami G

更新日期：2000-12-01 00:00:00

abstract：:To study the usefulness of calretinin as an immunohistochemistry marker in the diagnosis of cardiac myxoma (CM) and the origin of myxoma cells, we examined 24 CMs and 9 fetal hearts with immunohistochemical methods on formalin-fixed paraffin-embedded tissues. We compared 24 CMs with 10 mural thrombi, 6 jaw myxomas, an...

journal_title：American journal of clinical pathology

authors： Terracciano LM,Mhawech P,Suess K,D'Armiento M,Lehmann FS,Jundt G,Moch H,Sauter G,Mihatsch MJ

更新日期：2000-11-01 00:00:00

abstract：:In the absence of clinical signs, elevated values of the cardiac isoforms of troponin T (cTnT) and I (cTnI) can be found in the serum samples of some patients with skeletal muscle myopathies; the cause is unclear. We studied the messenger RNA (mRNA) expression of cTnT and cTnI in the skeletal muscles of 24 patients wi...

journal_title：American journal of clinical pathology

authors： Messner B,Baum H,Fischer P,Quasthoff S,Neumeier D

更新日期：2000-10-01 00:00:00

abstract：:Accurate diagnosis of oral hairy leukoplakia (OHL) is important because it may be an early indicator of undiagnosed HIV infection; moreover, it may be a prognostic indicator. Our purpose was to investigate the histopathologic features of subclinical OHL and to evaluate and support the rationale of detecting subclinica...

journal_title：American journal of clinical pathology

authors： Dias EP,Rocha ML,Silva JúniorA,Spyrides KS,Ferreira SM,Polignano GA,Feijó EC,Da Fonseca EC

更新日期：2000-09-01 00:00:00

abstract：:We assessed cytologic specimens from 11 mantle cell lymphomas (MCLs) and 32 other B-cell non-Hodgkin lymphomas (NHLs) for 11q13 breakpoints using a 2-color fluorescence in situ hybridization (FISH) assay that uses an 11q13 probe centered on the CCND1 gene and a centromeric chromosome 11 probe (CEP11). The number of nu...

journal_title：American journal of clinical pathology

authors： Katz RL,Caraway NP,Gu J,Jiang F,Pasco-Miller LA,Glassman AB,Luthra R,Hayes KJ,Romaguera JE,Cabanillas FF,Medeiros LJ

更新日期：2000-08-01 00:00:00

abstract：:We performed a retrospective clinicopathologic study on sequential biopsy specimens from 90 patients with Philadelphia chromosome-positive chronic myelogenous leukemia to study therapy-specific effects of busulfan (28 patients), hydroxyurea (32 patients), and interferon-alfa (IFN-alfa; 30 patients). Bone marrow specim...

journal_title：American journal of clinical pathology

authors： Thiele J,Kvasnicka HM,Schmitt-Graeff A,Bundschuh S,Biermann T,Roessler G,Wasmus M,Diehl V,Zankovich R,Schaefer HE

更新日期：2000-07-01 00:00:00

abstract：:Chronic lymphocytic leukemia (CLL) is well characterized clinically and immunophenotypically. Demonstration of a monotypic CD19+, CD5+ B-cell population is central to the diagnosis. We report 2 cases of biclonal CLL. Two elderly men were encountered with an absolute lymphocytosis consisting of the typical CD5+, CD19+,...

journal_title：American journal of clinical pathology

authors： Hsi ED,Hoeltge G,Tubbs RR

更新日期：2000-06-01 00:00:00

abstract：:This article explores 3 aspects of breast diagnosis that are currently under investigation and about which our thinking has recently undergone considerable reshaping. The trend toward more frequent evaluation of clinically subtle lesions has suggested that it might be necessary to understand thefine-needle aspiration ...

journal_title：American journal of clinical pathology

authors： Stanley MW,Sidawy MK,Sanchez MA,Stahl RE,Goldfischer M

更新日期：2000-05-01 00:00:00

abstract：:Overexpression and amplification of the HER-2 oncogene in patients with breast cancer has correlated with early onset of metastasis, resistance to hormonal therapy and some forms of chemotherapy, and shortened survival. Therefore, evaluation of this putative prognostic or predictive factor seems critical. Because diff...

journal_title：American journal of clinical pathology

authors： Gancberg D,Lespagnard L,Rouas G,Paesmans M,Piccart M,Di Leo A,Nogaret JM,Hertens D,Verhest A,Larsimont D

更新日期：2000-05-01 00:00:00

abstract：:A new generation hematology analyzer, Abbott CELL-DYN 4000 (CD 4000), capable of providing 26 parameters, including fully automated reticulocyte, nucleated RBC, blast, band, and immature granulocyte, and variant lymphocyte counts, was evaluated by using the National Committee for Clinical Laboratory Standards H20-A pr...

journal_title：American journal of clinical pathology

authors： Grimaldi E,Scopacasa F

更新日期：2000-04-01 00:00:00

abstract：:Extramammary Paget disease (EPD) is an uncommon cutaneous malignant neoplasm that arises in areas rich in apocrine glands (perineum, vulva, and axilla). Apocrine gland origin or apocrine differentiation of cells of EPD has been suggested. Estrongen, progesterone, and androgen hormone receptors have been reported to ex...

journal_title：American journal of clinical pathology

authors： Diaz de Leon E,Carcangiu ML,Prieto VG,McCue PA,Burchette JL,To G,Norris BA,Kovatich AJ,Sanchez RL,Krigman HR,Gatalica Z

更新日期：2000-04-01 00:00:00