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Neuroendocrine carcinoma

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https://www.readbyqxmd.com/read/28815668/primary-low-grade-neuroendocrine-carcinoma-of-the-skin-an-exceedingly-rare-entity
#1
Tiffany Y Chen, Annie O Morrison, Joe Susa, Clay J Cockerell
Low-grade neuroendocrine tumors (NET), also known as carcinoid tumor, commonly arise from the gastrointestinal and pulmonary tracts, but rarely occur in the skin. Cutaneous NET typically occurs as metastases or high grade primary lesions, called Merkel cell carcinoma. In the few cases described in literature, primary low-grade neuroendocrine carcinomas of the skin (LGNECS) are usually indolent cutaneous nodules, presenting on the head and trunk of elderly patients. LGNECS tumors are histologically similar to its counterparts arising in other anatomic locations...
August 16, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28808504/goblet-cell-carcinoid-of-the-appendix-and-mixed-adenoneuroendocrine-carcinoma-report-of-three-cases
#2
Hatice Karaman, Fatma Şenel, Mustafa Güreli, Turan Ekinci, Ömer Topuz
Neuroendocrine neoplasms are the most common epithelial tumors among appendix tumors. Appendix tumors that are completely or partially composed of neuroendocrine cells are divided into two categories: Classic carcinoid tumors and goblet cell carcinoid tumors (GCCT). They are known to progress more aggressively than classic (neuro) endocrine tumors. In this study, three cases with acute appendicitis symptoms are presented, including their clinical and histopathological findings. Microscopic examination detected GCCT in two cases and mixed adenoneuroendocrine carcinoma in one case, in addition to acute appendicitis...
July 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28807337/evaluation-of-cd43-expression-in-non-hematopoietic-malignancies
#3
Bjorn H Batdorf, Steven H Kroft, Paul R Hosking, Alexandra M Harrington, Alexander C Mackinnon, Horatiu Olteanu
OBJECTIVES: CD43 is normally expressed only on the surface of leukocytes, and is considered a sensitive and specific marker for hematologic malignancies. As such, it may have diagnostic utility in confirming hematolymphoid lineage in cases that are negative for CD45. Aberrant CD43 expression has been described in non-hematopoietic tumors, although literature data on this topic is variable and sometimes contradictory. To clarify and expand on existing literature findings, we evaluated CD43 expression by immunohistochemistry (IHC) in a large cohort (307) of non-hematopoietic neoplasms, including poorly differentiated malignancies...
August 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28807335/recent-updates-on-grading-and-classification-of-neuroendocrine-tumors
#4
REVIEW
Joo Young Kim, Seung-Mo Hong, Jae Y Ro
Neuroendocrine tumors (NETs) are originating from neuroendocrine cells in diffuse endocrine systems. NETs are diagnosed by characteristic histologic features and immunoprofiles. Recent 2010 WHO classification for gastroenteropancreatic NETs introduced grading system based on mitotic count and Ki-67 proliferation index. Gastroenteropancreatic NETs are classified as NET grade 1, NET grade 2, and neuroendocrine carcinoma (NET grade 3). However, the carcinoid is still used in classification of NETs of the lung and uterine cervix...
August 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28807108/etiologies-and-management-of-cutaneous-flushing-malignant-causes
#5
REVIEW
Azeen Sadeghian, Hailey Rouhana, Brittany Oswald-Stumpf, Erin Boh
The second article in this 2-part continuing medical education series reviews the following malignant causes of flushing: mastocytosis, medullary thyroid carcinoma, pheochromocytoma, carcinoid tumors, gastroenteropancreatic neuroendocrine tumors, bronchogenic carcinoma, vasointestinal polypeptide secreting tumors, and renal cell carcinoma. The information provided will allow physicians to better distinguish patients who have worrisome presentations that require a more thorough investigation. Appropriate diagnostic workup and treatment options for these malignancies are reviewed...
September 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28806619/a-long-term-recurrence-free-survival-of-a-patient-with-the-mixed-adeno-neuroendocrine-bile-duct-carcinoma-a-case-report-and-review-of-the-literature
#6
Wataru Izumo, Ryota Higuchi, Takehisa Yazawa, Shuichiro Uemura, Yutaro Matsunaga, Masahiro Shiihara, Toru Furukawa, Masakazu Yamamoto
INTRODUCTION: Neuroendocrine tumors arising primarily in the bile duct are rare. And among these tumors, mixed adeno-neuroendocrine carcinoma (MANEC) is quite uncommon. We report a patient with MANEC who achieved long-term recurrence-free survival. And our case report includes analysis previous case reports. PRESENTATION OF CASE: A 66-year-old man underwent investigation for persistent anorexia and fatigue. Laboratory tests showed that the values of hepatobiliary enzymes were increased...
August 4, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28805598/screening-frequency-and-histologic-type-influence-the-efficacy-of-cervical-cancer-screening-a-nationwide-cohort-study
#7
Ying-Cheng Chiang, Yun-Yuan Chen, Shu-Feng Hsieh, Chun-Ju Chiang, San-Lin You, Wen-Fang Cheng, Mei-Shu Lai, Chi-An Chen
OBJECTIVE: To evaluate the influence of age, screening interval, and histologic type on the effect of Pap smears in cervical cancer screening. MATERIALS AND METHODS: Data were retrieved from the Taiwan National Cancer Registry and Cervical Cancer Screening Registration System for the period from 2002 to 2010. Age, Pap smear interval, FIGO stage, and histology were further analyzed. RESULTS: A total of 12,294 women with cervical cancer were enrolled, including 10,040 with squamous cell carcinoma (SCC), 1720 with adenocarcinoma (ADC), 401 with adenosquamous carcinoma (ASC), and 133 with small cell neuroendocrine carcinoma (SMC)...
August 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28803232/digestive-system-mixed-neuroendocrine-non-neuroendocrine-neoplasms
#8
Louis de Mestier, Jérôme Cros, Cindy Neuzillet, Olivia Hentic, Axel Egal, Nelly Muller, Olivier Bouché, Guillaume Cadiot, Philippe Ruszniewski, Anne Couvelard, Pascal Hammel
Mixed neuroendocrine-non-neuroendocrine neoplasms (MiNEN) are a heterogeneous subgroup of rare neoplasms that represent about a third of all poorly differentiated neuroendocrine carcinomas (PDNEC). MiNEN combine a neuroendocrine component, usually a PDNEC, and a non-neuroendocrine component, generally an adenocarcinoma, both accounting for at least 30% of the neoplasm. MiNEN are classified as high-, intermediate-, or low-grade malignancies depending on the metastatic potential of the tumour components. High-grade malignant component should be considered even if it represents <30% of the tumour...
August 12, 2017: Neuroendocrinology
https://www.readbyqxmd.com/read/28802661/efficacy-of-isolated-limb-perfusion-ilp-in-patients-with-merkel-cell-carcinoma-mcc-a-multicenter-experience
#9
L M van Veenendaal, M F Madu, M E T Tesselaar, C Verhoef, D J Grünhagen, A C J van Akkooi
BACKGROUND: Merkel cell carcinoma (MCC) is a rare and potentially aggressive neuroendocrine tumor of the skin, with a propensity for locoregional metastases. In two expert referral centers, isolated limb perfusion (ILP) is used to obtain locoregional control in selected locoregionally advanced MCC patients. This study describes our experience. METHOD: Patients who underwent ILP for MCC were analyzed. ILP was performed with melphalan and tumor necrosis factor (TNF) combination therapy...
August 3, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28802497/update-on-merkel-cell-carcinoma
#10
REVIEW
Paul W Harms
Merkel cell carcinoma (MCC) is a rare, aggressive cutaneous neuroendocrine malignancy. Merkel cell polyomavirus, a tumorigenic DNA virus, is present in most MCC tumors, with implications for tumor biology, diagnosis, and management. Merkel cell polyomavirus-positive tumors have a high burden of UV-signature mutations, similar to melanoma. The histopathologic diagnosis of MCC requires immunohistochemistry to exclude morphologically similar entities. Therapies for advanced disease are currently lacking. Here, the features of MCC are reviewed, including recent molecular discoveries with implications for improved therapy for advanced disease...
September 2017: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/28798003/neuroendocrine-carcinoma-of-gall-bladder-a-rare-presentation-with-review-of-literature
#11
Amit Gupta, Parvez Ahmed, Prashant Durgapal, Pooja Kala, Shalinee Rao, Rajesh Pasricha, Sanjeev Misra
Neuroendocrine tumors are the rarest tumors of gallbladder. The most aggressive variant is neuroendocrine carcinoma which presents in about 0.5% of all gallbladder carcinomas and 0.2% of all neuroendocrine tumors. It seems possible that survival rates can be improved by utilizing wide surgical resection combined with chemotherapy. We report a case of neuroendocrine carcinoma of gall bladder in a 20-year old female patient. In present case, the etiology was not known as patient did not have cholelithiasis or any symptoms related to chronic inflammation...
May 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28794363/renal-cell-carcinoma-and-a-pancreatic-neuroendocrine-tumor-a-coincidence-or-instance-of-von-hippel-lindau-disease
#12
Hiroyuki Matsubayashi, Masashi Niwakawa, Katsuhiko Uesaka, Keiko Sasaki, Yoshimi Kiyozumi, Hirotoshi Ishiwatari, Kinichi Hotta, Kenichiro Imai, Sayo Ito, Kohei Takizawa, Masaki Tanaka, Noboru Kawata, Naomi Kakushima, Hiroyuki Ono
We herein report a rare case of a 79-year-old man who presented with the simultaneous occurrence of pancreatic neuroendocrine tumors (PNET) and renal cell carcinomas (RCC), without any other Von Hippel-Lindau (VHL)-associated lesions or any pertinent family history. Computed tomography showed vascular-rich solid lesions in the left kidney and the pancreatic tail, measuring 72 mm and 15 mm in size, respectively. Preoperatively, RCC with pancreatic metastasis was suspected and laparotomy was performed. However, the resected specimens revealed a different tumor histology, namely renal clear cell carcinoma (G2, pT3) and PNET (G1, pT3)...
August 10, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28793278/mixed-adenoneuroendocrine-carcinoma-derived-from-the-cystic-duct-a-case-report
#13
Yu-Ki Takemoto, Tomoyuki Abe, Hironobu Amano, Keiji Hanada, Akihito Okazaki, Tomoyuki Minami, Tsuyoshi Kobayashi, Masahiro Nakahara, Shuji Yonehara, Hideki Ohdan, Toshio Noriyuki
INTRODUCTION: Mixed adenoneuroendocrine carcinomas (MANECs) derived from cystic duct are extremely rare. PRESENTATION OF CASE: An 80-year-old woman was admitted to the department of surgery, Onomichi general hospital with abnormal liver function and jaundice. Enhanced abdominal computed tomography (CT) detected a well-enhanced papillary tumor in the cystic duct, which protruded into the common bile duct. The intrahepatic bile duct was dilated due to tumor obstruction...
July 13, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28793172/tropomyosin-receptor-kinase-a-expression-on-merkel-cell-carcinoma-cells
#14
Ulrike Wehkamp, Sophie Stern, Sandra Krüger, Axel Hauschild, Christoph Röcken, Friederike Egberts
Importance: Merkel cell carcinoma (MCC) is a malignant neuroendocrine skin tumor frequently associated with the Merkel cell polyomavirus. Immune checkpoint therapy showed remarkable results, although not all patients are responsive to this therapy. Anti-tropomyosin receptor kinase A (TrkA)-targeted treatment has shown promising results in several tumor entities. Objective: To determine TrkA expression in MCC as a rationale for potential targeted therapy. Design, Setting, and Participants: This case series study investigated the MCC specimens of 55 patients treated at the Department of Dermatology, University Hospital of Schleswig-Holstein, Kiel, Germany, from January 1, 2005, through December 31, 2015...
August 9, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28790093/aggressive-large-cell-neuroendocrine-carcinoma-of-the-sigmoid-colon-in-a-patient-with-ulcerative-colitis
#15
Patrick Stoner, Taban Ghaffaripour, David Cohen
Colonic inflammation seen in inflammatory bowel disease (IBD) predisposes to the development of colorectal adenocarcinoma. In contrast, colorectal neuroendocrine carcinomas (NECs) have rarely been reported in the setting of IBD, and no definitive relationship between these tumours and IBD has been established. Dysplasia from chronic inflammation leading to neuroendocrine cell differentiation may be responsible for NEC development, though this finding has not been seen consistently. We present a case of large-cell neuroendocrine carcinoma of the sigmoid colon in a 65-year-old woman with long-standing ulcerative colitis...
August 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28781783/neuroendocrine-carcinoma-of-the-lung-expressing-anaplastic-lymphoma-kinase-on-high-sensitivity-immunohistochemistry-a-case-report
#16
Kotoko Miyoshi, Yasushi Adachi, Hitoshi Nakaji, Akiharu Okamura, Yasuhiro Sakai, Ryuji Hirano, Shinsuke Yahata, Ming Li, Susumu Ikehara
It has been reported that anaplastic lymphoma kinase (ALK) protein is expressed in a proportion of non-small-cell carcinomas (mainly adenocarcinomas). By contrast, high-sensitivity immunohistochemistry (IHC) rarely detects ALK protein expression in neuroendocrine carcinomas (NECs) of the lung, which include small-cell carcinomas and large-cell neuroendocrine carcinomas (LCNECs). We herein present a case of NEC that was identified as ALK-positive via high-sensitivity IHC. A 51-year-old man was diagnosed with small-cell carcinoma in the upper lobe of the right lung...
August 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28777151/does-strong-and-diffuse-pax-8-positivity-occur-in-primary-lung-carcinoma-an-immunohistochemical-study-of-418-cases-and-review-of-the-literature
#17
Kelsey E McHugh, Andrea V Arrossi, Carol F Farver, Sanjay Mukhopadhyay
Although rare cases of PAX-8-positive primary lung carcinoma have been reported, details of staining distribution and intensity in such cases are limited. The aim of this study was to determine whether strong and diffuse PAX-8 staining can occur in primary lung carcinoma. Immunohistochemical staining for PAX-8 (Rabbit polyclonal, 10336-1-AP; Proteintech) was performed on whole-tissue sections from 418 resected primary lung carcinomas. PAX-8 was positive in 5/418 (1.2%) cases, all of which were large cell neuroendocrine carcinomas...
August 2, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28776935/shorter-telomere-length-increases-age-related-tumor-risks-in-von-hippel-lindau-disease-patients
#18
Jiang-Yi Wang, Shuang-He Peng, Xiang-Hui Ning, Teng Li, Sheng-Jie Liu, Jia-Yuan Liu, Bao-An Hong, Nie-Nie Qi, Xiang Peng, Bo-Wen Zhou, Jiu-Feng Zhang, Lin Cai, Kan Gong
Von Hippel-Lindau (VHL) disease is a rare autosomal dominant cancer syndrome caused by alterations of VHL gene. Patients are predisposed to develop pheochromocytomas and solid or cystic tumors of the central nervous system, kidney, pancreas, and retina. Remarkable phenotypic heterogeneity exits in organ involvement and tumor onset age between and within VHL families. However, no reliable markers have been found to predict the age-related tumor risks in VHL patients. A large Chinese cohort composed of 300 VHL patients and 92 healthy family controls was enrolled in our study...
August 4, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28776384/a-case-of-a-mixed-adenoneuroendocrine-tumor-of-the-colon
#19
Joana Ribeiro da Silva, Rolando Taveira Pinho, Antonia Furtado
Neuroendocrine cells often coexist with exocrine neoplasms of the gut and each component is normally present in a variable range. Despite this frequent association, mixed exocrine-neuroendocrine carcinomas are rare. This entity is known as adenoneuroendocrine carcinoma (MANEC) and each of its malignant components represents at least 30%. In contrast, there are only a few reports of another rare association of an adenoma and a well differentiated neuroendocrine tumor (NET) in the colon and rectum. The term mixed adenoneuroendocrine tumor (MANET) was suggested due to its indolent behavior and distinct morphological characteristics with mild to moderate nuclear atypia and low number of mitoses1...
August 4, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28768973/histological-transformation-to-large-cell-neuroendocrine-carcinoma-from-lung-adenocarcinoma-harboring-an-egfr-mutation-an-autopsy-case-report
#20
Rika Moriya, Satoshi Hokari, Satoshi Shibata, Takeshi Koizumi, Takafumi Tetsuka, Kazuhiko Ito, Hideki Hashidate, Hiroki Tsukada
We herein report a 58-year-old Japanese woman who survived 14 years after surgery for lung adenocarcinoma harboring an epidermal growth factor receptor (EGFR) exon 19 deletion. She developed recurrence, for which she underwent multimodal therapy, including EGFR-tyrosine kinase inhibitor (TKI) administration. She ultimately died from a rapidly progressive right lung tumor that was resistant to EGFR-TKI. According to the autopsy findings, she had combined large-cell neuroendocrine carcinoma (LCNEC) and adenocarcinoma in the right lung, which retained an EGFR exon 19 deletion in both components...
2017: Internal Medicine
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