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Archives of Pathology & Laboratory Medicine

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https://read.qxmd.com/read/30720334/pulmonary-nodular-lymphoid-hyperplasia
#1
Maggie Yell, Flavia G Rosado
Pulmonary nodular lymphoid hyperplasia is an uncommon reactive lymphoproliferative disorder that presents as an asymptomatic lung mass. The histopathologic diagnosis of pulmonary nodular lymphoid hyperplasia may be challenging because of its morphologic overlap with other diseases, such as extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue and immunoglobulin G4-related sclerosing disease. Despite the similarities, there are distinctive morphologic and phenotypic features that allow for the correct diagnosis in the majority of cases...
February 6, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30702334/protein-c-deficiency
#2
Peyman Dinarvand, Karen Moser
Protein C (PC) deficiency is a heritable or acquired risk factor for thrombophilia, with presentations varying from asymptomatic to venous thromboembolism to neonatal purpura fulminans, a life-threatening disorder. Hereditary PC deficiency is caused by mutation in the PC ( PROC) gene located on chromosome 2q14.3. Heterozygous and acquired PC deficiencies are more common than homozygous deficiency. The recommended initial laboratory test measures PC activity using either clot-based or chromogenic methods. There are numerous potential interferences in PC activity testing that may result in either false-positive (falsely low activity) or false-negative (falsely normal or elevated activity) results...
January 31, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30702333/the-association-of-invasive-cribriform-lesions-with-adverse-prostatic-adenocarcinoma-outccomes-an-institutional-experience-systematic-review-and-meta-analysis
#3
Xunda Luo, Jasvir S Khurana, Nirag Jhala, Huaqing Zhao, He Wang
CONTEXT.—: Recent studies and a few reviews suggest that presence of invasive cribriform lesions (ICLs) in prostatic acinar adenocarcinoma correlates with adverse outcomes. However, a systematic review with meta-analysis on this correlation is currently lacking. OBJECTIVE.—: To compare the likelihood of adverse outcomes by the status of ICLs in prostatic acinar adenocarcinoma with the meta-analysis of high-quality published data and institutional experience...
January 31, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30702332/the-significance-of-so-called-equivocal-immunohistochemical-staining-for-cytomegalovirus-in-colorectal-biopsies
#4
Manju Ambelil, David M Saulino, Atilla Ertan, Andrew W DuPont, Mamoun Younes
CONTEXT.—: Recent studies examining immunohistochemical staining of colorectal biopsies for cytomegalovirus (CMV) reported that some cases showed only occasional small positive nuclei that were called equivocal for CMV. OBJECTIVES.—: To determine the extent and clinical significance of equivocal CMV staining in colorectal biopsies. DESIGN.—: Two-hundred twenty-one consecutive cases of colon and rectal biopsies that were stained for CMV by immunohistochemistry were retrieved from our files and reviewed...
January 31, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30672338/pulmonary-lymphoepithelioma-like-carcinoma
#5
Sakda Sathirareuangchai, Kirk Hirata
Pulmonary lymphoepithelioma-like carcinoma is a rare type of non-small cell lung cancer. The tumor is usually discovered in young, nonsmoking, Asian populations. The patients are diagnosed at an earlier stage and have a better prognosis than those with other non-small cell lung cancers. Histologically, the tumor morphology is indistinguishable from undifferentiated carcinoma of the nasopharynx. It is characterized by nests or diffuse sheets of syncytial tumor cells, which show round to oval vesicular nuclei with prominent nucleoli, along with an admixed heavy lymphocytic and plasma cell infiltrate...
January 23, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30672337/a-review-of-current-challenges-in-colorectal-cancer-reporting
#6
Heather Dawson, Richard Kirsch, David Messenger, David Driman
CONTEXT.—: Pathologic assessment of colorectal cancer resection specimens plays an important role in postsurgical management and prognostication in patients with colorectal cancer. Challenges exist in the evaluation and reporting of these specimens, either because of difficulties in applying existing guidelines or related to newer concepts. OBJECTIVE.—: To address challenging areas in colorectal cancer pathology and to provide an overview of the literature, current guidelines, and expert recommendations for the handling of colorectal cancer resection specimens in everyday practice...
January 23, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30672336/combined-pathology-driven-algorithmic-testing-and-integrated-reporting-for-bone-marrow-examination
#7
Lauren N Pearson, Jill M Miller, John H Lunde, Ronald J Bryant, Michael R Lewis, Mary E Tang
CONTEXT.—: The College of American Pathologists published guideline recommending bone marrow synoptic reporting for hematologic neoplasms. OBJECTIVE.—: To evaluate the impact of pathology-driven algorithmic testing (PDAT) with integrated reporting for bone marrow examination on test utilization, ability to render a specific World Health Organization diagnosis, and clinician satisfaction 1 year after implementation. DESIGN.—: We reviewed the hematopathology reports, integrated synoptic reports, and ancillary test results generated during a 12-month period...
January 23, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30672335/bladder-cancer-in-the-genomic-era
#8
Charles C Guo, Bogdan Czerniak
CONTEXT.—: Bladder cancer is a heterogeneous disease that exhibits a wide spectrum of clinical and pathologic features. The classification of bladder cancer has been traditionally based on morphologic assessment with the aid of immunohistochemistry. However, recent genomic studies have revealed that distinct alterations of DNA and RNA in bladder cancer may underlie its diverse clinicopathologic features, leading to a novel molecular classification of this common human cancer. OBJECTIVE...
January 23, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30672334/clear-cell-papillary-renal-cell-carcinoma
#9
Jianping Zhao, Eduardo Eyzaguirre
Clear cell papillary renal cell carcinoma (ccpRCC) is a recently recognized entity and represents the fourth most common variant of renal cell carcinoma (RCC). It has unique morphologic and immunohistochemical features and demonstrates an indolent clinical behavior. Microscopically, it may mimic other RCCs with clear cell features, such as clear cell RCC, translocation RCC, and papillary RCC with clear cell changes. High index of suspicion is required to keep ccpRCC in the differential diagnosis of RCCs with features of clear cell and/or papillary architecture...
January 23, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30645156/quantitative-image-analysis-of-human-epidermal-growth-factor-receptor-2-immunohistochemistry-for-breast-cancer-guideline-from-the-college-of-american-pathologists
#10
Marilyn M Bui, Michael W Riben, Kimberly H Allison, Elizabeth Chlipala, Carol Colasacco, Andrea G Kahn, Christina Lacchetti, Anant Madabhushi, Liron Pantanowitz, Mohamed E Salama, Rachel L Stewart, Nicole E Thomas, John E Tomaszewski, M Elizabeth Hammond
CONTEXT.—: Advancements in genomic, computing, and imaging technology have spurred new opportunities to use quantitative image analysis (QIA) for diagnostic testing. OBJECTIVE.—: To develop evidence-based recommendations to improve accuracy, precision, and reproducibility in the interpretation of human epidermal growth factor receptor 2 (HER2) immunohistochemistry (IHC) for breast cancer where QIA is used. DESIGN.—: The College of American Pathologists (CAP) convened a panel of pathologists, histotechnologists, and computer scientists with expertise in image analysis, immunohistochemistry, quality management, and breast pathology to develop recommendations for QIA of HER2 IHC in breast cancer...
January 15, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30645155/gentamicin-and-vancomycin-interference-on-results-of-clinical-chemistry-parameters-on-abbott-architect-c8000
#11
Tina Brencic, Nora Nikolac
CONTEXT.—: Gentamicin and vancomycin are nephrotoxic antibiotics. Little is known about the influence of drug concentrations on results of clinical chemistry tests. OBJECTIVE.—: To investigate gentamicin and vancomycin interference on results of 33 commonly measured biochemistry tests. DESIGN.—: The study was carried out in the University Department of Chemistry, Medical School University Hospital Sestre Milosrdnice (Zagreb, Croatia)...
January 15, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30640534/the-history-of-pathologists-assistants-a-tale-of-2-educational-mavericks
#12
James R Wright
CONTEXT.—: The use of medical technologists to assist with clinical pathology workload has been common since the 1930s. In stark contrast, most aspects of anatomical pathology have traditionally been considered to be medical work that must be performed by pathologists or residents. OBJECTIVE.—: To describe the history of the pathologists' assistant profession in North America. DESIGN.—: Available primary and secondary historical sources were reviewed...
January 14, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30638401/skin-adnexal-tumors-in-plain-language-a-practical-approach-for-the-general-surgical-pathologist
#13
Edward H Fulton, Jennifer R Kaley, Jerad M Gardner
CONTEXT.—: Skin adnexal tumors, those neoplasms deriving from hair follicles and sweat glands, are often a source of confusion amongst even experienced pathologists. Many well-described entities have overlapping features, tumors are often only partially sampled, and many cases do not fit neatly into well-established classification schemes. OBJECTIVES.—: To simplify categorization of adnexal tumors for the general surgical pathologist and to shed light on many of the diagnostic dilemmas commonly encountered in daily practice...
January 14, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30628851/clear-cell-sarcoma-of-the-kidney
#14
Sze Jet Aw, Kenneth Tou En Chang
Clear cell sarcoma of the kidney is the second most common primary renal malignancy in childhood. It is histologically diverse, making accurate diagnosis challenging in some cases. Recent molecular studies have uncovered BCOR exon 15 internal tandem duplications in most cases, and YWHAE-NUTM2 fusion in a few cases, with the remaining cases having other genetic mutations, including BCOR-CCNB3 fusion and EGFR mutations. Although clear cell sarcoma of the kidney has no specific immunophenotype, several markers including cyclin D1, nerve growth factor receptor, and BCOR (BCL6 corepressor) have emerged as potential diagnostic aides...
January 10, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30628840/hepatoid-carcinoma-of-the-ovary-clinical-histopathologic-and-immunophenotypic-features
#15
Andres M Acosta, Michael R Pins
Hepatoid carcinoma of the ovary (HCO) is a rare malignant tumor of uncertain histogenesis that was first described by Ishikura and Scully in the late 1980s. Unlike hepatoid yolk sac tumor (HYST), one of its main differential diagnoses, HCO usually presents in perimenopausal and postmenopausal women without gonadal dysgenesis. Most cases show advanced local disease at initial presentation, with diffuse intraperitoneal dissemination. Despite aggressive treatment, including surgery and adjuvant chemotherapy, 61...
January 10, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30605369/implementation-of-the-2018-human-epidermal-growth-factor-receptor-2-guideline-by-american-society-of-clinical-oncology-college-of-american-pathologists-will-reduce-false-positive-tests
#16
Vittoria Martin, Alexandra Valera, Melissa De Joffrey, Sara Banfi, Luca Mazzucchelli
No abstract text is available yet for this article.
January 3, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30605368/human-epidermal-growth-factor-receptor-2-testing-by-fluorescent-in-situ-hybridization-positive-or-negative-american-society-of-clinical-oncology-college-of-american-pathologists-guidelines-2007-2013-and-2018
#17
Ciara Murray, Clare D'Arcy, Giuseppe Gullo, Louise Flanagan, Cecily M Quinn
No abstract text is available yet for this article.
January 3, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30605367/in-reply
#18
Antonio C Wolff, M Elizabeth Hale Hammond, Kimberly H Allison, Brittany E Harvey, Lisa M McShane, Mitchell Dowsett
No abstract text is available yet for this article.
January 3, 2019: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30640512/differentiated-vulvar-intraepithelial-neoplasia-a-brief-review-of-clinicopathologic-features
#19
Cao Jin, Sharon Liang
Differentiated-type vulvar intraepithelial neoplasia (dVIN) is a non-human papilloma virus (HPV)-related precursor lesion to vulvar squamous carcinoma. The terminology has only become recognized clinically and histopathologically in recent years despite being described more than 50 years ago. As opposed to the HPV-related VIN (uVIN), dVIN has different features of histomorphology, risk of progression, and molecular pathogenesis. Notably, dVIN commonly develops in a background of chronic inflammatory dermatoses such as lichen sclerosis and lichen simplex chronicus...
December 28, 2018: Archives of Pathology & Laboratory Medicine
https://read.qxmd.com/read/30605024/cutaneous-metastases-a-review-and-diagnostic-approach-to-tumors-of-unknown-origin
#20
Gabriel Habermehl, Jennifer Ko
CONTEXT.—: Cutaneous metastases from a distant malignancy are a diagnostic challenge for pathologists. Secondary involvement of the skin by a metastatic process portends a much worse clinical prognosis than any primary cutaneous malignant mimickers. Immunohistochemical staining methods continue to evolve and are of paramount importance in diagnosis. OBJECTIVE.—: To review the clinical, histopathologic, and immunohistochemical staining patterns for commonly encountered entities and discuss potential pitfalls in diagnosis...
December 28, 2018: Archives of Pathology & Laboratory Medicine
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