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Advances in Anatomic Pathology

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https://www.readbyqxmd.com/read/27677082/podocyte-and-parietal-epithelial-cell-interactions-in-health-and-disease
#1
Turki Al Hussain, Hadeel Al Mana, Maged H Hussein, Mohammed Akhtar
The glomerulus has 3 resident cells namely mesangial cells that produce the mesangial matrix, endothelial cells that line the glomerular capillaries, and podocytes that cover the outer surface of the glomerular basement membrane. Parietal epithelial cells (PrECs), which line the Bowman's capsule are not part of the glomerular tuft but may have an important role in the normal function of the glomerulus. A significant progress has been made in recent years regarding our understanding of the role and function of these cells in normal kidney and in kidneys with various types of glomerulopathy...
September 26, 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27740962/endometrial-endometrioid-carcinoma-with-large-cystic-growth-configuration-and-deceptive-pattern-of-invasion-associated-with-abundant-nodular-fasciitis-like-stroma-a-unique-hitherto-unreported-histology-in-endometrioid-carcinoma
#2
Marián Švajdler, Michael Michal, Pavol Dubinský, Peter Švajdler, Ondrej Ondič, Michal Michal
We describe a case of an unusual endometrial endometrioid carcinoma occurring in a 67-year-old woman. The tumor involved uterine corpus as well as lower uterine segment and presented as polypoid tumor protruding through the cervical orifice. Microscopically, the tumor was characterized by broad zones of cytologically bland fibromyxoid stroma resembling nodular fasciitis, showing vaguely nodular architecture. Neoplastic glands were characterized by interconnected elongated slit-like and large cystic profiles, mostly lined by flattened epithelium with variable squamous differentiation, whereas typical columnar endometrioid cells were only focally present...
November 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27740961/basic-molecular-pathology-and-cytogenetics-for-practicing-pathologists-correlation-with-morphology-and-with-a-focus-on-aspects-of-diagnostic-or-therapeutic-utility
#3
Georgia Karpathiou, Anna Batistatou, Fabien Forest, Alix Clemenson, Michel Peoc'h
Morphology, as confronted in the everyday practice, often correlates with specific molecular features, which have important implications not only in pathogenesis and in diagnosis but also in prognosis and therapy. Thus, it is important that the classical pathology includes a sound knowledge of molecular aspects of disease. These molecular concepts are complex and not easily understood by all engaged in the routine practice of histopathology. Thus, the aim of this review is to present a summary of most of the necessary concepts for pathologists involving molecular pathology and genetics, beginning from basic definitions and mechanisms to major abnormalities and the methodology to detect them, correlating at the same time, the specific morphologic features associated with every abnormality...
November 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27740960/-omics-approaches-in-breast-cancer-research-and-clinical-practice
#4
Priyakshi Kalita-de Croft, Fares Al-Ejeh, Amy E McCart Reed, Jodi M Saunus, Sunil R Lakhani
Our understanding of the natural history of breast cancer has evolved alongside technologies to study its genomic, transcriptomic, proteomic, and metabolomics landscapes. These technologies have helped decipher multiple molecular pathways dysregulated in breast cancer. First-generation 'omics analyses considered each of these dimensions individually, but it is becoming increasingly clear that more holistic, integrative approaches are required to fully understand complex biological systems. The 'omics represent an exciting era of discovery in breast cancer research, although important issues need to be addressed to realize the clinical utility of these data through precision cancer care...
November 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27677083/starry-sky-pattern-in-hematopoietic-neoplasms-a-review-of-pathophysiology-and-differential-diagnosis
#5
Janelyn L Dy-Ledesma, Joseph D Khoury, Rose Lou Marie C Agbay, Mar Garcia, Roberto N Miranda, L Jeffrey Medeiros
The starry sky pattern is a distinctive histologic feature wherein a rapidly proliferating hematolymphoid neoplasm contains scattered histiocytes with abundant pale cytoplasm in a background of monomorphic neoplastic cells. The cytoplasm of these histiocytes typically contains cellular remnants, also known as tingible bodies, incorporated through active phagocytosis. Although common and widely recognized, relatively little is known about the pathophysiological underpinnings of the starry sky pattern. Its resemblance to a similar pattern seen in the germinal centers of secondary follicles suggests a possible starting point for understanding the molecular basis of the starry sky pattern and potential routes for its exploitation for therapeutic purposes...
November 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27441757/primary-mediastinal-classical-hodgkin-lymphoma
#6
Sergio Piña-Oviedo, Cesar A Moran
Primary mediastinal Classical Hodgkin lymphoma (CHL) is rare. Nodular sclerosis CHL (NS-CHL) is the most common subtype involving the anterior mediastinum and/or mediastinal lymph nodes. Primary thymic CHL is exceedingly rare. The disease typically affects young women and is asymptomatic in 30% to 50% of patients. Common symptoms include fatigue, chest pain, dyspnea and cough, but vary depending on the location and size of the tumor. B-symptoms develop in 30% of cases. By imaging, primary mediastinal CHL presents as mediastinal widening/mediastinal mass that does not invade adjacent organs but may compress vital structures as bulky disease...
September 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27438375/adrenal-pathology-in-the-adult-a-urological-pathologist-s-perspective
#7
Donna E Hansel, Victor E Reuter
Adrenal gland diagnostics can pose significant challenges. In most academic and community practice settings, adrenal gland resections are encountered less frequently than other endocrine or genitourinary specimens, leading to less familiarity with evolving classifications and criteria. The unique dichotomy between cortical and medullary lesions reflects the developmental evolution of these functionally independent components. Adrenal cortical lesions at resection include hyperplasia, adenoma, and carcinoma, with some cases straddling the boundary between these distinct clinical classifications...
September 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27438374/selected-case-from-the-arkadi-m-rywlin-international-pathology-slide-seminar-benign-warthin-tumor-of-the-thyroid
#8
Kvetoslava Peckova, Ondrej Daum, Michael Michal, Radmila Curcikova, Michal Michal
We report on an exceedingly rare lesion of the thyroid probably of a branchial cleft origin, which was not published in the world literature before. A 58-year-old woman underwent a total thyroidectomy for bilateral goiter. Grossly, there was one yellowish nodule sized 15 mm in the largest dimension found in the right lobe. Microscopically, the thyroid parenchyma showed signs of Hashimoto thyroiditis. The nodule in the right lobe was composed of a part of solid cell nests appearance, another part resembling a branchial cleft cyst, and a part resembling Warthin tumor...
September 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27403615/antineoplastic-treatment-and-renal-injury-an-update-on-renal-pathology-due-to-cytotoxic-and-targeted-therapies
#9
Megan L Troxell, John P Higgins, Neeraja Kambham
Cancer patients experience kidney injury from multiple sources, including the tumor itself, diagnostic procedures, hypovolemia, infection, and drug exposure, superimposed upon baseline chronic damage. This review will focus on cytotoxic or targeted chemotherapy-associated renal injury. In this setting, tubulointerstitial injury and thrombotic microangiopathy (vascular injury) are more common than other forms of kidney injury including glomerular. Cisplatin, pemetrexed, and ifosfamide are well-known causes of acute tubular injury/necrosis...
September 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27403614/correlation-of-histologic-subtypes-and-molecular-alterations-in-pulmonary-adenocarcinoma-therapeutic-and-prognostic-implications
#10
Jiyoon Kim, Se Jin Jang, Chang Min Choi, Jae Y Ro
Major driver mutations of pulmonary adenocarcinomas have been identified and highlighted as actionable targets for precision cancer medicine. As phenotype is largely determined by genotype, genetic changes associated with morphologic features have recently received more attention from both pathologists and clinicians. The morphologic features of adenocarcinomas with mutations in EGFR or KRAS, or translocated ALK, have rarely been described. Pulmonary adenocarcinomas with EGFR mutations, the most common driver mutation encountered in Asian patients with pulmonary adenocarcinoma, show lepidic or papillary organotypic growth patterns...
September 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27271843/recent-advances-in-aggressive-large-b-cell-lymphomas-a-comprehensive-review
#11
Penelope Korkolopoulou, Theodoros Vassilakopoulos, Vassilios Milionis, Maria Ioannou
Diffuse large B-cell lymphoma (DLBCL) is an aggressive disease with considerable heterogeneity reflected in the 2008 World Health Organization classification. In recent years, genome-wide assessment of genetic and epigenetic alterations has shed light upon distinct molecular subsets linked to dysregulation of specific genes or pathways. Besides fostering our knowledge regarding the molecular complexity of DLBCL types, these studies have unraveled previously unappreciated genetic lesions, which may be exploited for prognostic and therapeutic purposes...
July 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27233050/the-paris-system-for-reporting-urinary-cytology-the-quest-to-develop-a-standardized-terminology
#12
Güliz A Barkan, Eva M Wojcik, Ritu Nayar, Spasenija Savic-Prince, Marcus L Quek, Daniel F I Kurtycz, Dorothy L Rosenthal
The main purpose of urine cytology is to detect high-grade urothelial carcinoma. With this principle in mind, The Paris System (TPS) Working Group, composed of cytopathologists, surgical pathologists, and urologists, has proposed and published a standardized reporting system that includes specific diagnostic categories and cytomorphologic criteria for the reliable diagnosis of high-grade urothelial carcinoma. This paper outlines the essential elements of TPS and the process that led to the formation and rationale of the reporting system...
July 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27145091/braf-and-epithelial-mesenchymal-transition-lessons-from-papillary-thyroid-carcinoma-and-primary-cutaneous-melanoma
#13
Brendon Mitchell, Jagdish K Dhingra, Meera Mahalingam
The increased prevalence of BRAF mutations in thyroid carcinoma and primary cutaneous melanoma (PCM) hint that dysregulation of BRAF might contribute to the noted association between PCM and thyroid carcinoma. A recent study evaluating the rate of BRAFV600E mutations among patients who had been diagnosed with primary papillary thyroid carcinoma (PTC) and PCM showed that patients with either PCM or PTC were at an increased risk of developing the other as a second primary malignant neoplasm. Furthermore, the authors noted that samples from patients suffering from both malignancies exhibited a higher rate of incidence of the BRAFV600E mutation, compared with patients not suffering from both malignancies...
July 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27058246/cancer-vaccines-past-present-and-future
#14
Shamayel Mohammed, Nasir Bakshi, Naeem Chaudri, Javed Akhter, Mohammed Akhtar
Cancer is a common and potentially deadly disease. Some of the cancers may be difficult to treat by conventional means such as surgery, radiation, and chemotherapy, but may be controlled by the stimulation of the immune response of the body with the help of cancer vaccines. The use of vaccines for preventing infections by oncogenic viruses such as hepatitis B virus and human papilloma virus has been extremely successful in reducing the incidence of cancers resulting from these infections. The use of vaccines for treating cancers that are not due to viral infections and that are already established is currently the object of numerous clinical trials...
May 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27058245/rediscovering-secondary-tumors-of-the-prostate-in-the-molecular-era
#15
Nicola Fusco, Amedeo Sciarra, Elena Guerini-Rocco, Caterina Marchiò, Francesca Vignani, Piergiuseppe Colombo, Stefano Ferrero
Metastatic involvement of the prostate from noncontiguous solid tumors is a rare event occurring by means of vascular dissemination. The reported cases of biopsy and surgical samples with metastatic involvement have increased; however, a comprehensive understanding of secondary tumors of the prostate is currently missing. Metastases to the prostate carry a dismal prognosis and may pose serious diagnostic challenges to both clinicians and pathologists, with crucial therapeutic implications. Secondary tumors of the prostate spread more frequently from the digestive tract, the lung, and the kidney...
May 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27058244/ex-vivo-fluorescence-confocal-microscopy-in-surgical-pathology-state-of-the-art
#16
Moira Ragazzi, Caterina Longo, Simonetta Piana
First developed in 1957, confocal microscopy is a powerful imaging tool that can be used to obtain near real-time reflected light images of untreated human tissue with nearly histologic resolution. Besides its research applications, in the last decades, confocal microscopy technology has been proposed as a useful device to improve clinical diagnosis, especially in ophthalmology, dermatology, and endomicroscopy settings, thanks to advances in instrument development. Compared with the wider use of the in vivo tissue assessment, ex vivo applications of confocal microscopy are not fully explored...
May 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27058243/the-pathology-of-acute-liver-failure
#17
Jay H Lefkowitch
Acute liver failure (ALF) is a rare and severe liver disease that usually develops in 8 weeks or less in individuals without preexisting liver disease. Its chief causes worldwide are hepatitis virus infections (hepatitis A, B, and E) and drug hepatotoxicity (particularly intentional or unintentional acetaminophen toxicity). Massive hepatic necrosis is often seen in liver specimens in ALF and features marked loss of hepatocytes, variable degrees of inflammation, and a stereotypic proliferation of bile ductular structures (neocholangioles) derived from activated periportal hepatic progenitor cells...
May 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27058242/evaluating-intestinal-infections-a-systematic-approach
#18
Andrea Barbieri, A Brian West
Endoscopic biopsies of the mucosa of the large and small intestines can present the pathologist with daunting challenges, in particular because of the breadth of the differential diagnosis, which may include neoplastic, ischemic, iatrogenic (notably medication related), autoimmune, idiopathic, and infectious entities. The purpose of the present study was to develop a logical and systematic approach to the diagnosis of mucosal infections by identifying several morphologic compartments in the intestinal mucosa, and establishing a differential diagnosis for the organisms that are associated with each compartment...
May 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/26849819/laboratory-information-systems-in-molecular-diagnostics-why-molecular-diagnostics-data-are-different
#19
Roy E Lee, Walter H Henricks, Sahussapont J Sirintrapun
Molecular diagnostic testing presents new challenges to information management that are yet to be sufficiently addressed by currently available information systems for the molecular laboratory. These challenges relate to unique aspects of molecular genetic testing: molecular test ordering, informed consent issues, diverse specimen types that encompass the full breadth of specimens handled by traditional anatomic and clinical pathology information systems, data structures and data elements specific to molecular testing, varied testing workflows and protocols, diverse instrument outputs, unique needs and requirements of molecular test reporting, and nuances related to the dissemination of molecular pathology test reports...
March 2016: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/26849818/mobile-technology-for-the-practice-of-pathology
#20
Douglas J Hartman
Recently, several technological advances have been introduced to mobile phones leading some people to refer to them as "smartphones." These changes have led to widespread consumer adoption. A similar adoption has occurred within the medical field and this revolution is changing the practice of medicine, including pathology. Several mobile applications have been published for dermatology, orthopedics, ophthalmology, neurosurgery, and clinical pathology. The applications are wide ranging, including mobile technology to increase patient engagement, self-monitoring by patients, clinical algorithm calculation, facilitation between experts to resource-poor environments...
March 2016: Advances in Anatomic Pathology
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