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Immunohistochemistry for gastrointestinal neoplasms

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https://www.readbyqxmd.com/read/28711650/role-of-satb2-in-distinguishing-the-site-of-origin-in-glandular-lesions-of-the-bladder-urinary-tract
#1
Giovanna Angela Giannico, Allen M Gown, Jonathan I Epstein, Frank Revetta, Justin A Bishop
The differential diagnosis of glandular lesions of the bladder/urinary tract can be challenging due to significant morphologic and immunohistochemical overlap between primary lesions and metastasis/direct extension from adjacent organs. Special AT-rich sequence-binding protein 2 (SATB2), encoded on chromosome 2q32-33, is a recently described DNA-binding protein involved in osteoblast lineage commitment and expressed in colorectal and appendiceal neoplasms. In this study, we hypothesized that immunohistochemistry for SATB2 may be of value in distinguishing primary adenocarcinoma of the bladder/urinary tract and urothelial carcinoma with glandular differentiation from gastrointestinal and endocervical primaries...
July 12, 2017: Human Pathology
https://www.readbyqxmd.com/read/28695686/imprint-cytology-of-clear-cell-sarcoma-like-tumor-of-the-gastrointestinal-tract-in-the-small-intestine-a-case-report
#2
Takashi Kato, Shin Ichihara, Hiroko Gotoda, Shunji Muraoka, Terufumi Kubo, Shintaro Sugita, Tadashi Hasegawa
Clear cell sarcoma-like tumor of the gastrointestinal tract (CCSLGT) is an extremely rare malignant neoplasm in the digestive tract. Its cytomorphologic features have never previously been reported. Here, we describe a case of CCSLGT, including its cytologic examination findings. A 47-year-old woman presented with a mass in the small intestine, which was resected and sent for imprint cytology. Imprint smears revealed tumor cells with light eosinophilic or clear cytoplasm in a necrotic background. Many of the tumor cells were arranged in a perivascular growth with a pseudopapillary formation, and there were some non-neoplastic osteoclast-like giant cells...
July 11, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28621294/endoscopic-ultrasound-with-tissue-sampling-is-accurate-in-the-diagnosis-and-subclassification-of-gastrointestinal-spindle-cell-neoplasms
#3
Dalbir Singh Sandhu, Adrian N Holm, Rami El-Abiad, Carolyn Rysgaard, Chris Jensen, Henning Gerke
BACKGROUND AND OBJECTIVES: Mesenchymal (spindle cell) neoplasms (SCN) of the gastrointestinal (GI) tract are an important subtype of subepithelial lesions that need subclassification to assess their malignant potential. Reported success rates of accurate subclassification with endoscopic ultrasound (EUS)-guided biopsies are variable. Our goal was to analyze our experience using EUS-guided TruCut biopsy (EUS-TCB) in the majority of patients. METHODS: Retrospective analysis in patients who underwent EUS with biopsies for suspected SCN at our tertiary referral center between 2004 and 2013...
May 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28440971/prognostic-factors-for-large-symptomatic-gists-a-pragmatic-study-of-experiences-from-a-university-hospital-over-10-years
#4
Supatcha Prasertcharoensuk, Punnapud Thanapongpornthana, Vajarabhongsa Bhudhisawasdi, Ake Pugkhem, Kriangsak Jenwitheesuk, Aumkhae Sookprasert, Chawalit Pairojkul
Background: Gastrointestinal stromal tumors (GISTs), which are mesenchymal neoplasms in the gastrointestinal (GI) tract account for 0.2% of all GI tumors. Several factors have been reported (mostly from studies conducted in Western countries) to be associated with survival in GISTs cases such as tumor site, staging, and tumor size. We conducted a pragmatic study, looking at a 10-year period, aimed at understanding the prognostic factors related to GISTs in a university hospital. The study population consisted of patients with large symptomatic GISTs...
March 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28356974/gastrointestinal-stromal-tumor-with-a-pdgfra-mutation-masquerading-as-gastric-plexiform-fibromyxoma-a-comparative-clinicopathological-study-of-two-cases
#5
Jun Zhou, Jingjing Xu, Guozhong Jiang, Yihui Ma, Jingwen Qi, Wencai Li, Dandan Zhang
Gastric plexiform fibromyxoma (PF) is a rare mesenchymal tumor with a histologically distinctive multinodular pattern, dissimilar to conventional gastrointestinal stromal tumor (GIST). The current study presents one case of gastric PF, and one case of GIST with a platelet-derived growth factor receptor α (PDGFRA) mutation mimicking PF, and discusses their differential diagnoses. The two patients were a 51-year-old male with PF and a 47-year-old female with GIST, each of whom presented with an occupying lesion in the gastric antrum...
February 2017: Oncology Letters
https://www.readbyqxmd.com/read/28288693/uterine-epithelioid-leiomyosarcoma-with-c-kit-expression-and-ywhae-gene-rearrangement-a-case-report-of-a-diagnostic-pitfall-of-uterine-sarcoma
#6
Terufumi Kubo, Shintaro Sugita, Ryuichi Wada, Noriaki Kikuchi, Masahiro Iwasaki, Yumika Ito, Taro Sugawara, Hiromi Fujita, Makoto Emori, Ryoichi Tanaka, Hiroshi Hirano, Tsuyoshi Saito, Tadashi Hasegawa
BACKGROUND: Uterine sarcoma is a rare tumor that is often difficult to classify based on morphological and immunohistochemical analysis alone. Limited access to molecular biological analysis in routine practice would hinder making a definitive diagnosis. CASE PRESENTATION: In this report, we describe a case of a mesenchymal tumor arising from the uterine cervix in a 52-year-old woman. From microscopic morphology of the resected specimen, epithelioid leiomyosarcoma, high-grade endometrial stromal sarcoma, or uterine gastrointestinal stromal tumor (GIST) were considered as differential diagnoses...
March 14, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28283864/lower-gastrointestinal-neuroendocrine-neoplasms-associated-with-hereditary-cancer-syndromes-a-case-series
#7
Trilokesh D Kidambi, Christina Pedley, Amie Blanco, Emily K Bergsland, Jonathan P Terdiman
Lower gastrointestinal (GI) neuroendocrine neoplasms (NENs) of the colon and rectum are uncommon and not traditionally associated with hereditary GI cancer syndromes. However, with widespread implementation of colorectal cancer screening programs, lower GI NENs are being identified with increasing frequency. We report the first case series of six patients with lower GI NENs who were diagnosed with hereditary GI cancer syndromes by germline testing. Two patients presented with poorly differentiated rectal neuroendocrine carcinoma (NECs) with colonic polyposis and were found to have Familial Adenomatous Polyposis and MYH-Associated Polyposis, respectively...
March 10, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28259173/subepithelial-rectal-gastrointestinal-stromal-tumor-the-use-of-endoscopic-ultrasound-guided-fine-needle-aspiration-to-establish-a-definitive-cytological-diagnosis-a-case-report
#8
Vitor Ottoboni Brunaldi, Martin Coronel, Danielle Azevedo Chacon, Eduardo Turiani Hourneaux De Moura, Sérgio E Matuguma, Eduardo Guimarães Hourneaux De Moura, Diogo Turiani Hourneaux De Moura
BACKGROUND: Gastrointestinal stromal tumors are the most common mesenchymal neoplasms affecting the gastrointestinal tract. The stomach is the most common location to be affected, and the rectum one of the rarest, but the whole gastrointestinal tract remains susceptible. Gastrointestinal stromal tumors account for only 0.1% of rectal tumors. Currently, endoscopic ultrasound plays an essential role in the diagnostic process of gastrointestinal stromal tumors, especially when the affected sites have a worse outcome and higher morbidity rates...
March 5, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27900093/primary-gastrointestinal-stromal-tumour-of-the-ileum-pre-operatively-diagnosed-as-an-abdominal-abscess
#9
Patrizia Rubini, Francesco Tartamella
The present case report described the acute presentation, diagnosis and management of a primary gastrointestinal stromal tumour (GIST) of the ileum. A male patient (age, 51 years) was admitted to Maggiore Hospital (Parma, Italy) due to presenting with fever, dysuria and lower abdominal pain. Ultrasonography and computed tomography showed a 7,5×5,5-cm pelvic mass containing air and purulent fluid indicative of an intraperitoneal abscess. The patient was subjected to diagnostic laparoscopy, which revealed a huge, soft cystic mass arising from the small bowel...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27738815/-new-features-in-the-2014-who-classification-of-uterine-neoplasms
#10
S F Lax
The 2014 World Health Organization (WHO) classification of uterine tumors revealed simplification of the classification by fusion of several entities and the introduction of novel entities. Among the multitude of alterations, the following are named: a simplified classification for precursor lesions of endometrial carcinoma now distinguishes between hyperplasia without atypia and atypical hyperplasia, the latter also known as endometrioid intraepithelial neoplasia (EIN). For endometrial carcinoma a differentiation is made between type 1 (endometrioid carcinoma with variants and mucinous carcinoma) and type 2 (serous and clear cell carcinoma)...
November 2016: Der Pathologe
https://www.readbyqxmd.com/read/27628324/mash1-is-highly-specific-for-neuroendocrine-carcinomas-an-immunohistochemical-evaluation-on-normal-and-various-neoplastic-tissues
#11
David Altree-Tacha, Jillian Tyrrell, Faqian Li
CONTEXT: -High-grade neuroendocrine carcinomas and carcinoids can arise in different sites such as lung, gastrointestinal tract, prostate, and skin. Classic neuroendocrine markers such as CD56, synaptophysin, and chromogranin cannot distinguish carcinoids from high-grade neuroendocrine carcinomas. Recently, mouse monoclonal mASH1 has been shown to help discriminate carcinoids from high-grade neuroendocrine carcinomas in various neoplastic sites. To date, there have been no comprehensive immunohistochemistry studies with mASH1 on nonneuroendocrine neoplasms...
February 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/27488616/-mesenchymal-tumors-of-the-mediastinum
#12
R J Rieker, A Marx, A Agaimy, P Ströbel
Mesenchymal neoplasms of the thymus and mediastinum account for only 2 % of neoplasms of the mediastinum and are therefore very rare. With very few exceptions the histology, immunohistochemistry and (based on current knowledge) molecular biology of mediastinal soft tissue tumors are not different from their counterparts in other organs. Characteristic features are more concerned with clinical epidemiological and therapeutic aspects as well as the multitude of possible differential diagnoses. With the exception of organ-specific tumors, such as gastrointestinal stromal tumors (GIST), virtually all entities encountered in peripheral soft tissues can also arise in the mediastinum...
September 2016: Der Pathologe
https://www.readbyqxmd.com/read/27438032/breast-cancer-metastasis-in-the-stomach-when-the-gastrectomy-is-indicated
#13
Marcus Vinicius Rozo Rodrigues, Valdir Tercioti-Junior, Luiz Roberto Lopes, João de Souza Coelho-Neto, Nelson Adami Andreollo
BACKGROUND: Breast cancer is the most common malignant neoplasm in the female population. However, stomach is a rare site for metastasis, and can show up many years after initial diagnosis and treatment of the primary tumor. AIM: Analyze a case series of this tumor and propose measures that can diagnose it with more precocity. METHODS: Were analyzed 12 patients with secondary gastric tumors. Immunohistochemistry has demonstrated that primary tumor was breast cancer...
April 2016: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
https://www.readbyqxmd.com/read/27346570/oncocytic-variant-of-malignant-gastrointestinal-neuroectodermal-tumor-a-potential-diagnostic-pitfall
#14
Jennifer M Boland, Andrew L Folpe
Malignant gastrointestinal neuroectodermal tumor is a very rare, aggressive malignant neoplasm that may occur in any location in the gastrointestinal tract. Malignant gastrointestinal neuroectodermal tumors typically consist of sheet-like to pseudopapillary proliferation of primitive-appearing epithelioid cells with a moderate amount of lightly eosinophilic cytoplasm, round nuclei and small nucleoli, often in association with osteoclast-like giant cells. By immunohistochemistry, these tumors show expression of S100 protein and SOX10, in the absence of expression of more specific melanocytic markers (e...
June 23, 2016: Human Pathology
https://www.readbyqxmd.com/read/27198568/interobserver-variability-in-intraductal-papillary-mucinous-neoplasm-subtypes-and-application-of-their-mucin-immunoprofiles
#15
Heewon A Kwak, Xiuli Liu, Daniela S Allende, Rish K Pai, John Hart, Shu-Yuan Xiao
Intraductal papillary mucinous neoplasm is considered a precursor lesion to pancreatic adenocarcinoma. These are further classified into four histologic subtypes: gastric, intestinal, pancreatobiliary, and oncocytic. The first aim of this study was to assess the interobserver variability among five gastrointestinal pathologists in diagnosing intraductal papillary mucinous neoplasm subtypes by morphology alone. The second aim of the study was to compare intraductal papillary mucinous neoplasm subtypes, which received consensus diagnoses (≥80% agreement) with their respective mucin immunoprofiles (MUC1, MUC2, MUC5AC, MUC6, and CDX2)...
September 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27184481/loss-of-ini1-expression-in-colorectal-carcinoma-is-associated-with-high-tumor-grade-poor-survival-brafv600e-mutation-and-mismatch-repair-deficiency
#16
Jennifer Wang, Juliana Andrici, Loretta Sioson, Adele Clarkson, Amy Sheen, Mahtab Farzin, Christopher W Toon, John Turchini, Anthony J Gill
SMARCB1 is a tumor suppressor gene that encodes for the protein INI1. SMARCB1 is commonly inactivated and INI1 correspondingly shows loss of expression in a range of malignant neoplasms including rhabdoid tumors, renal medullary carcinomas, and epithelioid sarcomas. Loss of INI1 expression has recently been reported in occasional gastrointestinal adenocarcinomas. We sought to investigate the incidence and clinicopathological significance of INI1 loss in colorectal adenocarcinoma (CRC). Immunohistochemistry for INI1 was performed in tissue microarray (TMA) format on a well-characterized and unselected cohort of CRCs undergoing surgical resection...
September 2016: Human Pathology
https://www.readbyqxmd.com/read/27179285/review-of-a-non-epithelial-tumour-of-the-small-bowel-after-c-kit-revolution
#17
Enrico Fiori, Daniele Ferraro, Alessandro De Cesare, Giovanni Leone, Cecilia Barmann, Alberto Schillaci, Francesco Borrini
UNLABELLED: In this article, we reviewed the case of a patient who was object, in 1999, of a published case report of schwannoma of the jejunal wall. Recently, the patient has been referred to our institution for a mass of the stomach identified by upper gastrointestinal endoscopy. The patient underwent a wedge resection of the stomach and a histopathological diagnosis of GIST of the stomach, based on a positive immunohistochemical staining of c-kit and CD34, was made. In consideration of these findings, we performed immunohistochemistry for c-kit and for CD34 on the previous lesion of the jejunal wall, which resulted strongly positive for CD117 and negative for CD34...
2016: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/27167387/salivary-mucinous-adenocarcinoma-of-the-mandible
#18
Michele De Benedittis, Alice Palmiotto, Monica Turco, Massimo Petruzzi, Roberto Cortelazzi
Mucinous adenocarcinoma (MAC) is a malignancy rarely affecting the salivary glands, with fewer than 30 cases described in the medical literature. MAC is mostly observed in the minor salivary glands of the palate, and to date, no case of salivary MAC has been reported in the mandible. Identifying a salivary MAC may be both clinically and histopathologically challenging, as differential diagnosis must consider not only other salivary malignancies expressing a mucinous component but also metastases from MACs of the gastrointestinal tract, breast, and sweat glands that strongly resemble a salivary MAC on histopathology...
April 2017: Odontology
https://www.readbyqxmd.com/read/27125358/comparison-of-metastatic-neuroendocrine-neoplasms-to-the-breast-and-primary-invasive-mammary-carcinomas-with-neuroendocrine-differentiation
#19
Sambit K Mohanty, Stacey A Kim, Deborah F DeLair, Shikha Bose, Anna R Laury, Shefali Chopra, Richard B Mertens, Deepti Dhall
Metastatic neuroendocrine neoplasms to the breast may show considerable morphologic overlap with primary mammary carcinomas, particularly those showing evidence of neuroendocrine differentiation, and may be misdiagnosed as such. Accurate distinction between these two entities is crucial for determination of appropriate clinical management. The histologic and immunohistochemical features of metastatic neuroendocrine neoplasms to the breast were studied and compared with the features of primary invasive mammary carcinomas with neuroendocrine differentiation, which served as controls...
August 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27056438/primary-anorectal-malignant-melanoma-an-uncommon-anorectal-pathology
#20
José Francisco Juanmartiñena Fernández, Ignacio Fernández-Urien, Alicia Córdoba
Anorectal malignant melanoma (AMM) is most common primary melanoma of gastrointestinal tract, accounting for 0.05% and 1% of all colorectal and anal cancers. We reported an 85 year-old woman with no significant past medical history who presented two-month period of rectal bleeding, abdominal pain, tenesmus and 2kg weight-loss. Laboratory markers were unremarkable, although rectal examination revealed two small haemorrhoids and a firm, non-obstructing mass in the lower rectum. Colonoscopy confirmed presence of an ulcerated pigmented neoplasm arising at dental line [A,B]...
September 2016: Revista Española de Enfermedades Digestivas
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