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Advances in Anatomic Pathology

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https://www.readbyqxmd.com/read/28098572/metastatic-organotropism-an-intrinsic-property-of-breast-cancer-molecular-subtypes
#1
Shi Wei, Gene P Siegal
It has long been known that some cancers have the propensity to metastasize to certain organs thus creating a nonrandom distribution of sites for distant relapse, a phenomenon known as "metastatic organotropism." Some of these examples include ovary primary to abdominal cavity, prostate primary to bone, and pancreas primary to liver. In contrast, other tumor types, such as mammary and renal cell carcinoma, can relapse in multiple organs although approximately half of advanced breast cancers metastasize to bone...
January 16, 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27941542/pathophysiology-of-iga-nephropathy
#2
REVIEW
Turki Al Hussain, Maged H Hussein, Hadeel Al Mana, Mohammed Akhtar
Immunoglobulin (Ig)A nephropathy is the most prevalent primary chronic glomerular disease in the world. Studies of molecular and cellular interactions involved in the pathogenesis of IgA nephropathy have revealed several inherent abnormalities in the production and subsequent handling of IgA1. In patients with this disease, altered glycan structures in the unique hinge region of the heavy chains of IgA1 molecules lead to the exposure of antigenic determinants, which are recognized by naturally occurring antiglycan antibodies of the IgG and/or IgA1 isotype...
January 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27941541/cytopathology-of-follicular-cell-nodules
#3
REVIEW
Esther D Rossi, Tommaso Bizzarro, Maurizio Martini, Luigi M Larocca, Fernando Schmitt, Philippe Vielh
The detection of thyroid nodules, consisting of different diseases, represents a common finding in population. Their evaluation and diagnosis are mostly achieved with fine-needle aspiration cytology (FNAC). Even though the majority of thyroid nodules are correctly diagnosed, a total of 25% to 30% of them are classified "indeterminate" comprising lesions with varying risk of malignancy and different types of management. Although the number of thyroid FNACs, including small lesions, is increasing due to the reliance upon sonographic and cytologic interpretations, there are issues concerning cytomorphologic interpretation and interobserver reproducibility...
January 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27941540/new-and-emerging-diagnostic-and-prognostic-immunohistochemical-biomarkers-in-prostate-pathology
#4
REVIEW
Giovanna A Giannico, Shanna A Arnold, Lan L Gellert, Omar Hameed
The diagnosis of minimal prostatic adenocarcinoma can be challenging on prostate needle biopsy, and immunohistochemistry may be used to support the diagnosis of cancer. The International Society of Urologic Pathology currently recommends the use of the basal cell markers high-molecular-weight cytokeraratin and p63, and α-methylacyl-coenzyme-A racemase. However, there are caveats associated with the interpretation of these markers, particularly with benign mimickers. Another issue is that of early detection of presence and progression of disease and prediction of recurrence after clinical intervention...
January 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27941539/primary-salivary-gland-type-tumors-of-the-thymus
#5
REVIEW
Neda Kalhor, Annikka Weissferdt, Cesar A Moran
The existence of primary salivary gland type tumors (SGTs), similar to those occurring in the major salivary glands, is well known in the thoracic cavity. When they occur in this anatomic area, these tumors more commonly arise from the lung. However, the existence of these tumors primarily affecting the thymus, although recognized in the literature, is rather not well documented or known. In addition, contrary to the primary lung SGTs, which are predominantly of the malignant type, these tumors when occur in thymus encompass a wider spectrum of biology ranging from benign to low grade, and high grade malignancy...
January 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27941538/nf1-and-neurofibromin-emerging-players-in-the-genetic-landscape-of-desmoplastic-melanoma
#6
REVIEW
Meera Mahalingam
Neurofibromatosis type I (NF1), a monogenic disorder with an autosomal dominant mode of inheritance, is caused by alterations in the NF1 gene which codes for the protein neurofibromin. Functionally, NF1 is a tumor suppressor as it is GTPase-activating protein that negatively regulates the MAPK pathway. More recently, much attention has focused on the role of NF1 and neurofibromin in melanoma as mutations in NF1 have been found to constitute 1 of the 4 distinct genomic categories of melanoma, with the other 3 comprising BRAF, NRAS, and "triple-wild-type" subtypes...
January 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/27677082/podocyte-and-parietal-epithelial-cell-interactions-in-health-and-disease
#7
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...
January 2017: 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
#8
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
#9
REVIEW
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
#10
REVIEW
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
#11
REVIEW
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
#12
REVIEW
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
#13
REVIEW
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
#14
REVIEW
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
#15
REVIEW
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
#16
REVIEW
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
#17
REVIEW
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
#18
REVIEW
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
#19
REVIEW
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
#20
REVIEW
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
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