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Pathology

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36 papers 0 to 25 followers Clinical cases and research about Human Patology
By Jose M. Barria Castro MD from Panama
https://www.readbyqxmd.com/read/28905666/second-opinion-expert-pathology-review-in-bladder-cancer-implications-for-patient-care
#1
Jennifer Gordetsky, Robin Collingwood, Win Shun Lai, Maria Del Carmen Rodriquez Pena, Soroush Rais-Bahrami
OBJECTIVES: To review bladder specimens referred to our facility for secondary review to determine the frequency and degree of changes in pathological diagnoses, which could affect patient care. METHODS: A retrospective review of 246 bladder specimens sent to our pathology department for second opinion pathological review was performed. All consultation specimens were reviewed by a single genitourinary (GU)-subspecialized surgical pathologist. Any changes in the pathological grade, stage, or histological tumor type were noted as well as patient demographic data...
September 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28877052/diagnostic-efficiency-in-digital-pathology-a-comparison-of-optical-versus-digital-assessment-in-510-surgical-pathology-cases
#2
Anne M Mills, Sarah E Gradecki, Bethany J Horton, Rebecca Blackwell, Christopher A Moskaluk, James W Mandell, Stacey E Mills, Helen P Cathro
Prior work has shown that digital images and microscopic slides can be interpreted with comparable diagnostic accuracy. Although accuracy has been well-validated, the interpretative time for digital images has scarcely been studied and concerns about efficiency remain a major barrier to adoption. We investigated the efficiency of digital pathology when compared with glass slide interpretation in the diagnosis of surgical pathology biopsy and resection specimens. Slides were pulled from 510 surgical pathology cases from 5 organ systems (gastrointestinal, gynecologic, liver, bladder, and brain)...
September 4, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28877064/desmoplastic-pattern-at-the-tumor-front-defines-poor-prognosis-subtypes-of-colorectal-cancer
#3
MULTICENTER STUDY
Hideki Ueno, Yukihide Kanemitsu, Shigeki Sekine, Megumi Ishiguro, Eisaku Ito, Yojiro Hashiguchi, Fukuo Kondo, Hideyuki Shimazaki, Satsuki Mochizuki, Yoshiki Kajiwara, Eiji Shinto, Junji Yamamoto
Although recent findings of cancer biology research indicate that prognostic power arises from genes expressed by stromal cells rather than epithelial cells, desmoplastic reaction (DR) has not been completely examined as a prognostic marker for colorectal cancer. A pathologic review of 821 stage II and III patients who underwent R0 resection for colorectal cancer at 4 independent institutions was conducted. DR was classified as mature, intermediate, or immature based on the existence of hyalinized keloid-like collagen and myxoid stroma at the extramural desmoplastic front...
November 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28751996/leiomyosarcoma-and-squamous-cell-carcinoma-arising-in-mature-cystic-teratoma-of-the-ovary
#4
Tip Pongsuvareeyakul, Kornkanok Sukpan, Somjet Chaicharoen, Surapan Khunamornpong
The occurrence of malignant transformation in mature cystic teratoma of the ovary is rare, with squamous cell carcinoma being the most common histologic type. Sarcomatous transformation has been rarely described in the literature. We present a case of leiomyosarcoma with a minor component of squamous cell carcinoma arising in mature cystic teratoma of ovary in a 65-year-old woman. The malignant tumor showed two distinct components of sarcomatous and invasive epithelial elements, which were confirmed by immunostaining...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28890838/adenocarcinoma-ex-goblet-cell-carcinoid-of-appendix-two-case-reports
#5
Yu-Ting Wang, Yi-Ru Li, Tuan-Ying Ke
Adenocarcinoma ex goblet cell carcinoid is a rare tumor incidentally found in specimens of appendicitis. Most patients present with acute abdomen, similar to acute appendicitis. Here we present two cases, which were found incidentally after operation. We give a brief summary about clinical and biological behavior of this entity.
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28898991/defining-papillary-carcinoma-of-the-thyroid-a-short-review-and-analysis
#6
Robin T Vollmer
Objectives: To review how changes in the pathologic definitions for papillary tumors of the thyroid during recent decades have affected outcomes for patients with these tumors. Methods: Forty-nine previous reports or studies involving collectively 53,606 patients were reviewed, and new analyses were performed on the data to include analyses of agreement, incidence, survival, and diagnostic categories. Results: The past emphasis on cytologic features to define papillary tumors has not resulted in ideal pairwise agreement between pathologists and has produced incidence and survival data suggesting overdetection and overdiagnosis...
August 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28608720/diagnostic-algorithm-of-common-mature-b-cell-lymphomas-by-immunohistochemistry
#7
REVIEW
Huan-You Wang, Youli Zu
CONTEXT: - Different types of mature B-cell lymphomas, including plasma cell neoplasms, exhibit distinct immunohistochemical profiles, which enable them to be correctly diagnosed. However, except for rare examples of lymphoma-specific immunohistochemistry, such as cyclin D1 in mantle cell lymphoma and annexin A1 in hairy cell leukemia, immunohistochemical profiles of mature B-cell lymphomas overlap and lack specificity. OBJECTIVES: - To systemically review immunohistochemical features associated with commonly encountered mature B-cell lymphomas based on the presence or absence of CD5 and CD10; to review the immunophenotypic profile of plasma cells derived from plasma cell myelomas and B-cell lymphomas; and to review a group of rare, aggressive B-cell lymphomas with antigen expression features of plasma cells...
September 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/11789719/follicular-patterned-lesions-of-the-thyroid-the-bane-of-the-pathologist
#8
REVIEW
Zubair W Baloch, Virginia A Livolsi
This review focuses on follicular-patterned lesions of the thyroid gland and their differential diagnosis. Included are a discussion of the features differentiating follicular adenoma from adenomatous or hyperplastic nodule and follicular adenoma from follicular carcinoma and the follicular variant of papillary thyroid carcinoma. The cytologic and histologic characteristics are described, and criteria for diagnosing the major follicular lesions are reviewed.
January 2002: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28893532/passport-to-pathology-transforming-the-medical-student-pathology-elective-from-a-passive-educational-experience-to-an-exciting-immersive-clinical-rotation
#9
EDITORIAL
Paras S Minhas, Imarhia E Enogieru, Richard N Mitchell, Douglas A Mata
No abstract text is available yet for this article.
September 8, 2017: Human Pathology
https://www.readbyqxmd.com/read/28685821/pd-1-pd-l1-inhibitors-in-haematological-malignancies-update-2017
#10
REVIEW
Tomas Jelinek, Jana Mihalyova, Michal Kascak, Juraj Duras, Roman Hajek
The introduction of PD-1/PD-L1 pathway inhibitors is an important landmark in solid oncology with unprecedented practice-changing activity in various types of solid tumours. Among haematological malignancies, PD-1/PD-L1 inhibitors have been successful, so far, only in the treatment of classical Hodgkin lymphoma, which typically exhibits an over-expression of PD-1 ligands (PD-L1, PD-L2) due to alterations in chromosome 9p24.1. Such positive outcomes led to the US Food and Drug Administration approval of nivolumab use in relapsed Hodgkin lymphoma in 2016 as the first haematological indication...
November 2017: Immunology
https://www.readbyqxmd.com/read/28582484/comparison-of-three-methods-for-measuring-workload-in-surgical-pathology-and-cytopathology
#11
COMPARATIVE STUDY
Daniel Cloetingh, Rodney A Schmidt, Christina S Kong
Objectives: Pathologist workload in the United States has traditionally been measured by relative value units (RVUs), which is often criticized for providing an inaccurate estimate of actual work. This study compares three methods for measuring workload. Methods: Surgical pathology and cytopathology workload for 1 representative month at Stanford Health Care was assessed using three different methods: RVUs, Royal College of Pathologists (RCP) point system, and University of Washington-Seattle (UW) slide count method...
July 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28605400/proposed-terminology-for-anal-squamous-lesions-its-application-and-interobserver-agreement-among-pathologists-in-academic-and-community-hospitals
#12
Andres A Roma, Xiuli Liu, Deepa T Patil, Hao Xie, Daniela Allende
Objectives: To analyze interobserver reproducibility and compare practice patterns between academic and community settings of Lower Anogenital Squamous Terminology (LAST). Methods: In total, 132 anal biopsy slides were revised as well as p16 immunostains. Results: LAST was used in 49% of cases (academic center, 68%; satellite hospitals [community practice setting], 32%). After pathology review and consensus interpretation, 23 (17%) case diagnoses were reclassified: eight (34...
July 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28608721/practical-applications-of-immunohistochemistry-in-the-diagnosis-of-genitourinary-tumors
#13
REVIEW
Xiuli Xiao, Rong Hu, Fang-Ming Deng, Steven S Shen, Ximing J Yang, Chin-Lee Wu
CONTEXT: - Pathologic diagnosis of tumors in the genitourinary system can be challenging based on morphology alone, particularly when diagnostic material is limited, such as in core biopsies. Immunohistochemical stain can be a useful tool to aid in the diagnosis. OBJECTIVE: - To provide an update on practical applications and interpretation of immunohistochemical stains in the diagnosis of tumors in prostate, kidney, bladder, and testis. We particularly focus on difficult differential diagnoses, providing our insights in frequently encountered challenging situations...
September 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28391625/fetal-foot-length-at-delivery-as-a-tool-for-determining-gestation-length-in-non-macerated-stillbirths
#14
Elaine Geldenhuys, Jean Coldrey, Colleen Wright, Daan Nel, Drucilla J Roberts, Theonia K Boyd, Hein Odendaal
OBJECTIVE: To assess whether fetal foot length at autopsy could reliably indicate gestation duration at stillbirth and the effects of maceration on this method. METHODS: The present cross-sectional secondary analysis was part of the Safe Passage Study; all Safe Passage Study participants who experienced a stillbirth at Tygerberg Academic Hospital, Cape Town, South Africa, between August 1, 2007, and January 31, 2015, were eligible to participate. After providing written informed consent for autopsy, the duration of gestation calculated using early ultrasonography and fetal foot length were compared...
July 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28185687/circulating-tumor-cells-and-circulating-tumor-dna-what-surgical-oncologists-need-to-know
#15
REVIEW
L Cabel, C Proudhon, P Mariani, D Tzanis, G Beinse, I Bieche, J-Y Pierga, F-C Bidard
As a result of recent progress in detection techniques, circulating tumor DNA (ctDNA) and circulating tumor cells (CTC) can now be accurately detected in the blood of most cancer patients. While these new biomarkers can provide a better understanding of key biological mechanisms underlying cancer growth and dissemination, they also open up a wide range of possible clinical applications in medical oncology, radiation oncology and surgical oncology. In this review, we summarize the results obtained with ctDNA and CTC together with their potential future clinical applications in the field of surgical oncology, with particular focus on the perioperative setting of various types of cancer...
May 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27959630/necroptosis-mechanisms-and-relevance-to-disease
#16
REVIEW
Lorenzo Galluzzi, Oliver Kepp, Francis Ka-Ming Chan, Guido Kroemer
Necroptosis is a form of regulated cell death that critically depends on receptor-interacting serine-threonine kinase 3 (RIPK3) and mixed lineage kinase domain-like (MLKL) and generally manifests with morphological features of necrosis. The molecular mechanisms that underlie distinct instances of necroptosis have just begun to emerge. Nonetheless, it has already been shown that necroptosis contributes to cellular demise in various pathophysiological conditions, including viral infection, acute kidney injury, and cardiac ischemia/reperfusion...
January 24, 2017: Annual Review of Pathology
https://www.readbyqxmd.com/read/27959637/immunopathogenesis-of-chronic-rhinosinusitis-and-nasal-polyposis
#17
REVIEW
Robert P Schleimer
Chronic rhinosinusitis (CRS) is a troublesome, chronic inflammatory disease that affects over 10% of the adult population, causing decreased quality of life, lost productivity, and lost time at work and leading to more than a million surgical interventions annually worldwide. The nose, paranasal sinuses, and associated lymphoid tissues play important roles in homeostasis and immunity, and CRS significantly impairs these normal functions. Pathogenic mechanisms of CRS have recently become the focus of intense investigations worldwide, and significant progress has been made...
January 24, 2017: Annual Review of Pathology
https://www.readbyqxmd.com/read/28135563/pathogenesis-and-pathology-of-mastocytosis
#18
REVIEW
Dean D Metcalfe, Yoseph A Mekori
Systemic mastocytosis is a clonal disorder of mast cells that may variably present with characteristic skin lesions, episodes of mast cell mediator release, and disturbances of hematopoiesis. No curative therapy presently exists. Conventional management has relied on agents that antagonize mediators released by mast cells, inhibit mediator secretion, or modulate mast cell proliferation. Recent advances in the molecular understanding of the pathophysiology of systemic mastocytosis have provided new therapeutic considerations, including new and novel tyrosine kinase inhibitors...
January 24, 2017: Annual Review of Pathology
https://www.readbyqxmd.com/read/28135564/disorders-of-astrocytes-alexander-disease-as-a-model
#19
REVIEW
Markel Olabarria, James E Goldman
Astrocytes undergo important phenotypic changes in many neurological disorders, including strokes, trauma, inflammatory diseases, infectious diseases, and neurodegenerative diseases. We have been studying the astrocytes of Alexander disease (AxD), which is caused by heterozygous mutations in the GFAP gene, which is the gene that encodes the major astrocyte intermediate filament protein. AxD is a primary astrocyte disease because GFAP expression is specific to astrocytes in the central nervous system (CNS). The accumulation of extremely large amounts of GFAP causes many molecular changes in astrocytes, including proteasome inhibition, stress kinase activation, mechanistic target of rapamycin (mTOR) activation, loss of glutamate and potassium buffering capacity, loss of astrocyte coupling, and changes in cell morphology...
January 24, 2017: Annual Review of Pathology
https://www.readbyqxmd.com/read/28082121/changes-in-the-luminal-environment-of-the-colonic-epithelial-cells-and-physiopathological-consequences
#20
REVIEW
François Blachier, Martin Beaumont, Mireille Andriamihaja, Anne-Marie Davila, Annaïg Lan, Marta Grauso, Lucie Armand, Robert Benamouzig, Daniel Tomé
Evidence, mostly from experimental models, has accumulated, indicating that modifications of bacterial metabolite concentrations in the large intestine luminal content, notably after changes in the dietary composition, may have important beneficial or deleterious consequences for the colonic epithelial cell metabolism and physiology in terms of mitochondrial energy metabolism, reactive oxygen species production, gene expression, DNA integrity, proliferation, and viability. Recent data suggest that for some bacterial metabolites, like hydrogen sulfide and butyrate, the extent of their oxidation in colonocytes affects their capacity to modulate gene expression in these cells...
March 2017: American Journal of Pathology
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