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Neuroendocrine carcinoma

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https://www.readbyqxmd.com/read/28528509/invasive-lobular-carcinoma-with-extracellular-mucin-production-a-novel-pattern-of-lobular-carcinomas-of-the-breast-clinico-pathological-description-of-eight-cases
#1
Gábor Cserni, Giuseppe Floris, Nektarios Koufopoulos, Anikó Kovács, Afroditi Nonni, Peter Regitnig, Anders Stahls, Zsuzsanna Varga
Invasive lobular carcinoma of the breast is known to produce intracellular mucin and has been recognized in single-case reports to show extracellular mucin production, as well. This latter morphology is not only rare but must also be under- or misdiagnosed. The aim was to better characterize this entity. Cases of lobular cancers demonstrating extracellular mucin formation were identified in a multi-institutional effort and their clinical and morphologic features were assessed. Immunohistochemistry was used to characterize the E-cadherin-membrane complex, neuroendocrine differentiation, and to some extent, mucin formation...
May 20, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28528398/squamous-and-neuroendocrine-specific-immunohistochemical-markers-in-head-and-neck-squamous-cell-carcinoma-a-tissue-microarray-study
#2
J S Lewis, R D Chernock, J A Bishop
The performance characteristics of neuroendocrine-specific and squamous-specific immunohistochemical markers in head and neck squamous cell carcinomas (SCC), in particular in oropharyngeal tumors in this era of human papillomavirus (HPV)-induced cases, are not well-established. The differential diagnosis for poorly differentiated SCCs, for nonkeratinizing oropharyngeal SCCs, and for other specific SCC variants such as basaloid SCC and undifferentiated (or lymphoepithelial-like) carcinomas includes neuroendocrine carcinomas...
May 20, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28527884/adjuvant-medications-that-improve-survival-after-locoregional-therapy
#3
F Edward Boas, Etay Ziv, Hooman Yarmohammadi, Karen T Brown, Joseph P Erinjeri, Constantinos T Sofocleous, James J Harding, Stephen B Solomon
PURPOSE: To determine if outpatient medications taken at the time of liver tumor embolization or ablation affect survival. MATERIALS AND METHODS: A retrospective review was done of 2,032 liver tumor embolization, radioembolization, and ablation procedures performed in 1,092 patients from June 2009 to April 2016. Pathology, hepatocellular carcinoma (HCC) stage (American Joint Committee on Cancer), neuroendocrine tumor (NET) grade, initial locoregional therapy, overall survival after initial locoregional therapy, Child-Pugh score, Eastern Cooperative Oncology Group performance status, Charlson Comorbidity Index, and outpatient medications taken at the time of locoregional therapy were analyzed for each patient...
May 17, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28522174/results-after-surgical-treatment-of-liver-metastases-in-patients-with-high-grade-gastroenteropancreatic-neuroendocrine-carcinomas
#4
R B Galleberg, U Knigge, E Tiensuu Janson, L W Vestermark, S-P Haugvik, M Ladekarl, S W Langer, H Grønbæk, P Österlund, G O Hjortland, J Assmus, L Tang, A Perren, H Sorbye
BACKGROUND: Gastroenteropancreatic neuroendocrine carcinomas (GEP-NEC) are generally characterized by synchronous metastases, high aggressiveness and a dismal prognosis. Current international guidelines do not recommend surgical treatment of liver metastases, however the existing data are scarce. The aim of this study was to evaluate the results of curatively intended resection/radiofrequency ablation (RFA) of liver metastases in patients with metastatic GEP-NEC. METHODS: 32 patients with a diagnosis of high-grade gastroenteropancreatic neuroendocrine neoplasm (Ki-67 > 20%) and with intended curative resection/RFA of liver metastases, were identified among 840 patients from two Nordic GEP-NEC registries...
May 4, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28521422/clinical-outcomes-and-prognostic-factors-of-resected-pancreatic-neuroendocrine-neoplasms-a-single-center-experience-in-china
#5
Kaizhou Jin, Guopei Luo, Jin Xu, Bo Zhang, Chen Liu, Shunrong Ji, Liang Liu, Jiang Long, Quanxing Ni, Xianjun Yu
The aim of the present study was to investigate the clinical, pathological and prognostic characteristics of Chinese patients with resected pancreatic neuroendocrine neoplasms (p-NENs). Data from patients who were surgically treated and pathologically diagnosed with p-NENs at the Department of Pancreatic Oncology of the Fudan University Shanghai Cancer Center (Shanghai, China), between January 2003 and July 2015, were evaluated using univariate and multivariate analyses. A total of 162 patients with p-NENs met the criteria of the present study and were included in the analysis...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28521313/amrubicin-monotherapy-for-patients-with-platinum-pretreated-non-gastrointestinal-non-pancreatic-extrapulmonary-neuroendocrine-carcinoma
#6
Takahiro Ebata, Tatsunori Shimoi, Tsukasa Ishiwata, Shunichiro Iwasawa, Seiko Bun, Mayu Yunokawa, Kan Yonemori, Yuichi Takiguchi, Kenji Tamura
OBJECTIVE: The aim of this study was to investigate the clinical usefulness of amrubicin therapy for patients with non-gastrointestinal (GI) non-pancreatic extrapulmonary neuroendocrine carcinoma (EP-NEC). METHODS: The medical records of patients from the 2 participating institutions were retrospectively reviewed. The eligibility criteria were: patients with non-GI non-pancreatic EP-NEC who received amrubicin monotherapy after platinum-based chemotherapy. Patients in whom the platinum-free interval (interval between the last day of platinum administration and the first subsequent documentation of disease progression) was 90 days or longer were classified into the platinum-sensitive group...
May 19, 2017: Oncology
https://www.readbyqxmd.com/read/28521295/change-from-lung-adenocarcinoma-to-small-cell-lung-cancer-as-a-mechanism-of-resistance-to-afatinib
#7
Paolo Manca, Marco Russano, Francesco Pantano, Giuseppe Tonini, Daniele Santini
We report the case of a patient affected by advanced EGFR mutation-positive lung who experienced resistance to therapy during treatment with Afatinib through the occurrence of a switch of tumor histotype to small cell lung cancer (SCLC) with features of a G3 neuroendocrine carcinoma. Unexpectedly, the switch to SCLC histotype occurred in the only site not responsive to afatinib and subsequently the most responsive to chemotherapy. Our case shows that occurrence of switch to SCLC is a possible mechanism of resistance during treatment with Afatinib...
May 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28521033/lymph-node-metastases-in-thymic-malignancies-a-chinese-alliance-for-research-in-thymomas-retrospective-database-analysis%C3%A2
#8
Zhitao Gu, Yucheng Wei, Jianhua Fu, Lijie Tan, Peng Zhang, Yongtao Han, Chun Chen, Renquan Zhang, Yin Li, Keneng Chen, Hezhong Chen, Yongyu Liu, Youbing Cui, Yun Wang, Liewen Pang, Zhentao Yu, Xinming Zhou, Yangchun Liu, Yi Shen, Wentao Fang
OBJECTIVES: Lymphatic involvement is believed to be relatively rare in thymic epithelial tumours. The incidence and prognostic significance of nodal metastases are still unclear. The goal of this study was to define the incidence and prognostic relevance of nodal metastasis in patients with thymic epithelial tumours, using a nationwide retrospective database of the Chinese Alliance for Research in Thymomas. METHODS: Patients who underwent upfront surgical resection without preoperative therapy were enrolled for the study...
May 18, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28514756/elevated-crp-levels-predict-poor-outcome-and-tumor-recurrence-in-patients-with-thymic-epithelial-tumors-a-pro-and-retrospective-analysis
#9
Stefan Janik, Christine Bekos, Philipp Hacker, Thomas Raunegger, Bahil Ghanim, Elisa Einwallner, Lucian Beer, Walter Klepetko, Leonhard Müllauer, Hendrik J Ankersmit, Bernhard Moser
OBJECTIVE: Scarce information exists on the pathogenesis of thymic epithelial tumors (TETs), comprising thymomas, thymic carcinomas (TCs) and neuroendocrine tumors. C-reactive protein (CRP) increases during certain malignancies. We aimed to investigate the clinical relevance of CRP in patients with TETs. RESULTS: Pretreatment CRP serum concentrations were significantly elevated in patients with TETs, particularly TCs and metastatic TETs. After complete tumor resection CRP serum concentrations were decreased (p = 0...
April 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28512245/merkel-cell-polyomavirus-small-t-antigen-initiates-merkel-cell-carcinoma-like-tumor-development-in-mice
#10
Monique E Verhaegen, Doris Mangelberger, Paul W Harms, Markus Eberl, Dawn M Wilbert, Julia Meireles, Christopher K Bichakjian, Thomas L Saunders, Sunny Y Wong, Andrzej A Dlugosz
Merkel cell carcinoma (MCC) tumor cells express several markers detected in normal Merkel cells, a non-proliferative population of neuroendocrine cells which arise from epidermis. MCCs frequently contain Merkel cell polyomavirus (MCPyV) DNA and express viral transforming antigens, sT and tLT, but the role of these putative oncogenes in MCC development, and this tumor's cell of origin, are unknown. Using a panel of pre-term transgenic mice, we show that epidermis-targeted co-expression of sT and the cell fate determinant atonal bHLH transcription factor 1 (Atoh1) leads to development of widespread cellular aggregates with histology and marker expression mimicking that of human intraepidermal MCC...
May 16, 2017: Cancer Research
https://www.readbyqxmd.com/read/28507599/comparison-of-relapse-free-survival-in-gastric-neuroendocrine-carcinoma-who-grade-3-and-gastric-carcinoma
#11
Beom Su Kim, Young Soo Park, Jeong Hwan Yook, Byung-Sik Kim
BACKGROUND: We compared relapse-free survival (RFS) in gastric neuroendocrine carcinoma (WHO grade 3) and gastric carcinoma (GC). This is one of very few studies that compare the prognosis of poorly differentiated neuroendocrine carcinoma (WHO grade 3, G3 NEC) with that of GC. METHODS: Between 1996 and 2014, 63 patients were diagnosed with G3 NEC of the stomach and 56 with gastric neuroendocrine tumors (NETs) with GC at Asan Medical Center in Seoul, Korea. We also randomly selected 762 patients diagnosed with GC between 1999 and 2008...
May 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/28506524/contemporary-incidence-and-cancer-control-outcomes-of-primary-neuroendocrine-prostate-cancer-a-seer-database-analysis
#12
Emanuele Zaffuto, Raisa Pompe, Marc Zanaty, Helen Davis Bondarenko, Sami-Ramzi Leyh-Bannurah, Marco Moschini, Paolo Dell'Oglio, Giorgio Gandaglia, Nicola Fossati, Armando Stabile, Kevin C Zorn, Francesco Montorsi, Alberto Briganti, Pierre I Karakiewicz
INTRODUCTION: Neuroendocrine carcinoma of the prostate (NEPC) is a rare entity. We aimed at providing contemporary data on incidence and survival figures of de-novo NEPC. MATERIALS AND METHODS: Within the Surveillance, Epidemiology, and End Results (SEER) database, we identified 309 individuals with de-novo NEPC diagnosed between 2004 and 2013. We evaluated age-adjusted incidence rates over the study. Kaplan-Meier analyses assessed overall survival (OS) after stratification according to histologic subtype, metastatic status, and treatment...
April 13, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28503336/plasmacytoma-as-a-mimicker-of-colonic-carcinoma-in-an-elderly-man
#13
Sara Mathew George, Eman Ali Aljufairi, Nisha Chandran, Sayed Ali Isa Almahari
Multiple myeloma is a neoplastic proliferation of monoclonal plasma cells. Although it is usually restricted to the bone marrow, extraskeletal spread in the form of localised extramedullary collections of malignant plasma cells (plasmacytomas) can occur. However, gastrointestinal tract involvement in multiple myeloma is rare and overt gastrointestinal bleeding from plasmacytoma is uncommon. We report a case of colonic plasmacytoma which presented with bleeding per rectum and was initially misdiagnosed as colonic neuroendocrine carcinoma...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28502684/metastatic-neuroendocrine-carcinoma-of-unknown-origin-arising-in-the-femoral-nerve-sheath
#14
Nicholas Candy, Adam Young, Kieren Allinson, Oliver Carr, Jason McMillen, Rikin Trivedi
Metastatic neuroendocrine carcinoma of unknown origin is a rare condition, usually presenting with lesions in the liver and/or lung. We present the first reported case of a metastatic neuroendocrine carcinoma of unknown origin arising in the femoral nerve sheath. MRI demonstrated what was thought to be a schwannoma in the left femoral nerve sheath in the proximal femoral triangle, immediately inferior to the anterior inferior iliac spine. At the time of operation, the tumour capsule was invading surrounding tissue as well as three trunks of the femoral nerve...
May 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28501762/poorly-differentiated-gastro-entero-pancreatic-neuroendocrine-carcinomas-are-they-really-heterogeneous-insights-from-the-ffcd-gte-national-cohort
#15
T Walter, D Tougeron, E Baudin, K Le Malicot, T Lecomte, D Malka, O Hentic, S Manfredi, I Bonnet, R Guimbaud, R Coriat, C Lepère, C Desauw, A Thirot-Bidault, L Dahan, G Roquin, T Aparicio, J-L Legoux, C Lombard-Bohas, J-Y Scoazec, C Lepage, G Cadiot
BACKGROUND: Diagnosis and management of poorly differentiated gastro-entero-pancreatic (GEP) neuroendocrine carcinomas (NECs) remain challenging. Recent studies suggest prognostic heterogeneity. We designed within the French Group of Endocrine Tumours a prospective cohort to gain insight in the prognostic stratification and treatment of GEP-NEC. PATIENTS AND METHODS: All patients with a diagnosis of GEP-NEC between 1st January 2010 and 31st December 2013 could be included in this national cohort...
May 11, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28495499/definitive-radiotherapy-for-merkel-cell-carcinoma-confers-clinically-meaningful-in-field-locoregional-control-a-review-and-analysis-of-the-literature
#16
REVIEW
Dakshika A Gunaratne, Julie R Howle, Michael J Veness
BACKGROUND: Merkel cell carcinoma (MCC) is an uncommon radiosensitive, neuroendocrine malignancy. Treatment often involves surgery; however, older, sicker patients may not be candidates for an operation. Institutions have published data favoring the role of definitive radiotherapy for macroscopic locoregional disease. OBJECTIVE: Our objective was to report the outcome of patients treated with definitive radiotherapy. METHODS: We performed a systematic review of Medline, PubMed, and Embase databases for reported cases or series of definitive radiotherapy for macroscopic locoregional MCC...
May 8, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28493800/iaslc-itmig-staging-system-and-lymph-node-map-for-thymic-epithelial-neoplasms
#17
Brett W Carter, Marcelo F Benveniste, Rachna Madan, Myrna C Godoy, Patricia M de Groot, Mylene T Truong, Melissa L Rosado-de-Christenson, Edith M Marom
Thymic epithelial neoplasms are rare malignancies that arise from the thymus and include thymoma, thymic carcinoma, and thymic neuroendocrine tumors. At least 15 different stage classifications have been proposed for thymic epithelial neoplasms and used to varying degrees in clinical practice, many of which have been constructed from small groups of patients. Traditionally, the Masaoka and Masaoka-Koga staging systems have been the schemes most commonly employed, and the latter has been recommended for use by the International Thymic Malignancy Interest Group (ITMIG)...
May 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28493366/frequent-idh2-r172-mutations-in-undifferentiated-and-poorly-differentiated-sinonasal-carcinomas
#18
Snjezana Dogan, Deborah J Chute, Bin Xu, Ryan N Ptashkin, Raghu Chandramohan, Jacklyn Casanova-Murphy, Khedoudja Nafa, Justin A Bishop, Simion I Chiosea, Edward B Stelow, Ian Ganly, David G Pfister, Nora Katabi, Ronald A Ghossein, Michael F Berger
Sinonasal undifferentiated carcinoma (SNUC) is a high-grade malignancy with limited treatment options and poor outcome. A morphologic spectrum of 47 sinonasal tumors including 17 (36.2%) SNUCs were analyzed at genomic level. Thirty carcinomas (Cohort 1) were subjected to a hybridization exon-capture next-generation sequencing assay (MSK-IMPACT(TM) ) to interrogate somatic variants in 279 or 410 cancer-related genes. Seventeen sinonasal tumors (Cohort 2) were examined only for presence of IDH1/2 exon 4 mutations by Sanger sequencing...
May 11, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28491223/-neuroendocrine-carcinoma-of-the-bladder-about-5-cases
#19
Hicham El Bote, Abelilah El Alaoui, Ziouani Oussama, Hachem El Sayegh, Ali Iken, Lounis Benslimane, Yassine Nouini
Neuroendocrine carcinoma of the bladder is a rare histological entity, characterized by the ability to metastasize quickly and associated with a poor prognosis. The purpose of this study was to analyze the clinical, histological, therapeutic and prognostic characteristics of neuroendocrine carcinoma of the bladder. We conducted a retrospective study collecting data from the medical records of 5 patients in the Department of Urology, at the Ibn Sina University Hospital during the period between January 2008 and June 2015...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28487490/differentiation-of-pancreatic-neuroendocrine-carcinoma-from-pancreatic-ductal-adenocarcinoma-using-magnetic-resonance-imaging-the-value-of-contrast-enhanced-and-diffusion-weighted-imaging
#20
Chuangen Guo, Xiao Chen, Zhongqiu Wang, Wenbo Xiao, Qidong Wang, Ke Sun, Xiaoling Zhuge
Pancreatic neuroendocrine carcinoma (PNEC) is often misdiagnosed as pancreatic ductal adenocarcinoma (PDAC). This retrospective study differentiated PNEC from PDAC using magnetic resonance imaging (MRI), including contrast-enhanced (CE) and diffusion-weighted imaging (DWI). Clinical data and MRI findings, including the T1/T2 signal, tumor boundary, size, enhancement degree, and apparent diffusion coefficient (ADC), were compared between 37 PDACs and 13 PNECs. Boundaries were more poorly defined in PDAC than PNEC (97...
April 21, 2017: Oncotarget
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