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https://www.readbyqxmd.com/read/29166513/primary-cutaneous-amelanotic-melanoma-and-gastrointestinal-stromal-tumor-in-synchronous-evolution
#1
Fernanda Teixeira Ortega, Rogério Nabor Kondo, Francine Milenkovich Belinetti, Mariana Onuki Okamura, Bruna Tuma
Gastrointestinal stromal tumor is rare digestive tract mesenchymal tumor, most often in the wall of the stomach. It is a benign neoplasm, but it can become malignant if not treated. We report a case of gastrointestinal stromal tumor that was discovered after abdominal ultrasonography during staging of a patient with primary cutaneous amelanotic melanoma. Mutation in the tyrosine kinase receptor could explain the development of two types of tumors in the same patient.
September 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/29166326/111in-dtpa-octreotide-spect-octreoscan-uptake-in-metastatic-renal-cell-carcinoma-to-the-pancreas
#2
Kenneth Chan, Tu Vinh Luong, Shaunak Navalkissoor
We report a case of late presentation of metastatic renal cell carcinoma (RCC) demonstrating intense In-DTPA-octreotide uptake in pancreas without recurrence at the primary site. Immunohistochemistry study revealed somatostatin receptor subtype 2 of metastatic RCC preferentially expressed on tumor endothelial cells. The typical hypervascular features of RCC with intense homogeneous contrast enhancement in the arterial phase on CT should raise the possibility of metastatic RCC. This case illustrates that RCC can demonstrate high octreotide uptake in abdominal metastases...
November 22, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29164988/development-of-peritoneal-carcinomatosis-in-epithelial-ovarian-cancer-a-review
#3
Juliette O A M van Baal, Cornelis J F van Noorden, Rienk Nieuwland, Koen K Van de Vijver, Auguste Sturk, Willemien J van Driel, Gemma G Kenter, Christianne A R Lok
Epithelial ovarian cancer (EOC) metastasizes intra-abdominally with often numerous, superficial, small-sized lesions. This so-called peritoneal carcinomatosis is difficult to treat, and peritoneal recurrences are frequently observed, leading to a poor prognosis. Underlying mechanisms of interactions between EOC and peritoneal cells are incompletely understood. This review summarizes and discusses the development of peritoneal carcinomatosis from a cell-biological perspective, focusing on characteristics of EOC and peritoneal cells...
November 1, 2017: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/29163693/association-between-spectral-computed-tomography-images-and-clinicopathological-features-in-advanced-gastric-adenocarcinoma
#4
Xiaohua Chen, Ke Ren, Pan Liang, Jiayin Li, Kuisheng Chen, Jianbo Gao
To investigate the role of spectral computed tomography (CT)-generated iodine concentration (IC) in the evaluation of clinicopathological features of advanced gastric adenocarcinoma (AGC), 42 patients who underwent abdominal enhanced CT with spectral imaging mode were selected for the present study. The IC of the primary lesion in the arterial phase (ICAP) and portal venous phase (ICVP) was measured and the IC of the aorta was used for a normalized iodine concentration (nIC). Micro-vessel density (MVD) and lymphatic vessel density (LVD) were detected using immunohistochemical assays against cluster of differentiation 34 and D2-40, respectively...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29163547/natural-killer-cells-from-the-subcutaneous-adipose-tissue-underexpress-the-nkp30-and-nkp44-in-obese-persons-and-are-less-active-against-major-histocompatibility-complex-class-i-non-expressing-neoplastic-cells
#5
Alireza Shoae-Hassani, Maryam Behfar, Seyed Abdolreza Mortazavi-Tabatabaei, Jafar Ai, Rashin Mohseni, Amir Ali Hamidieh
There are many types of leukocytes reside in subcutaneous adipose tissue (SAT), and among them, natural killer cells (NKs) comprise a major part. We show that the NKs that reside in the SAT (adipose tissue-derived NK cells; ADNKs) of the abdominal region found with phenotypic differences from the NKs circulating in the peripheral blood derived NK cells (PBNKs). In this survey, flow cytometry phenotyping was used to study the differences between the natural cytotoxicity receptor expression on ADNKs and PBNKs of both obese and lean persons...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29160086/anatomic-and-radiologic-study-of-renal-avascular-plane-brodel-s-line-and-its-potential-relevance-on-percutaneous-and-surgical-approaches-to-the-kidney
#6
Veronica Macchi, Edgardo Picardi, Antonino Inferrera, Andrea Porzionato, Alessandro Crestani, Giacomo Novara, Raffaele De Caro, Vincenzo Ficarra
OBJECTIVE: The aim of the present anatomic and radiologic study was to evaluate the location, extension and characteristics of the Brödel's plane and eventually define its different patterns. MATERIAL AND METHODS: We evaluated 15 human normal kidneys sampled from un-embalmed cadavers without clinical history or anatomical evidence of renal diseases. Kidneys with the surrounding perirenal fat tissue were removed en bloc with the abdominal segment of the aorta. The renal artery was injected with acrylic and radiopaque resins...
November 21, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/29159937/diffusion-weighted-mri-and-intravoxel-incoherent-motion-model-for-diagnosis-of-pediatric-solid-abdominal-tumors
#7
Emma M Meeus, Niloufar Zarinabad, Karen A Manias, Jan Novak, Heather E L Rose, Hamid Dehghani, Katharine Foster, Bruce Morland, Andrew C Peet
BACKGROUND: Pediatric retroperitoneal tumors in the renal bed are often large and heterogeneous, and their diagnosis based on conventional imaging alone is not possible. More advanced imaging methods, such as diffusion-weighted (DW) MRI and the use of intravoxel incoherent motion (IVIM), have the potential to provide additional biomarkers that could facilitate their noninvasive diagnosis. PURPOSE: To assess the use of an IVIM model for diagnosis of childhood malignant abdominal tumors and discrimination of benign from malignant lesions...
November 21, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29159606/preoperative-68-ga-dota-somatostatin-analog-pet-ct-hybrid-imaging-increases-detection-rate-of-intra-abdominal-small-intestinal-neuroendocrine-tumor-lesions
#8
Olov Norlén, Harald Montan, Per Hellman, Peter Stålberg, Anders Sundin
BACKGROUND: Small intestinal neuroendocrine tumors (SI-NETs) are the most common form of neoplasm in the small bowel. Radiological identification of primary tumors (PT), which may be multiple, is difficult, and therefore palpation of the entire small bowel is routinely performed during laparotomy. The aim was to determine detection rates of PT and peritoneal carcinomatosis (PC) with (68)Ga-DOTATOC/TATE-PET/CT in comparison with i.v. contrast-enhanced computed tomography (CE-CT) and thus to clarify whether modern functional imaging can mitigate the need for palpation of bowel during surgery enabling oncologically adequate laparoscopic resection...
November 20, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/29159572/comparison-of-positron-emission-tomography-computed-tomography-and-magnetic-resonance-imaging-for-posttherapy-evaluation-in-patients-with-advanced-cervical-cancer-receiving-definitive-concurrent-chemoradiotherapy
#9
Tzu-Pei Su, Gigin Lin, Yu-Ting Huang, Feng-Yuan Liu, Chun-Chieh Wang, Angel Chao, Hung-Hsueh Chou, Tzu-Chen Yen, Chyong-Huey Lai
PURPOSE: Our purpose was to assess the diagnostic performance of positron emission tomography/computed tomography (PET/CT) and pelvic/abdominal magnetic resonance imaging (MRI) after concurrent chemoradiotherapy (CCRT) for posttherapy evaluation in patients with advanced cervical cancer. METHODS: Patients with cervical squamous cell carcinoma, either with advanced FIGO stage or with positive pelvic or para-aortic lymph node (PALN), received PET/CT using [(18)F]fluorodeoxyglucose and MRI including diffusion-weighted imaging between 2 and 3 months after CCRT completion...
November 20, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29159474/two-rare-cases-of-abdominal-tumor-in-children-answers
#10
Haojie Tang, Mengtian Lu, Shan Jiang, Ying Ren
No abstract text is available yet for this article.
November 20, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29159473/two-rare-cases-of-abdominal-tumor-in-children-questions
#11
Haojie Tang, Mengtian Lu, Shan Jiang, Ying Ren
No abstract text is available yet for this article.
November 20, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29159168/incidental-mesenteric-paraganglioma-a-case-report-and-literature-review
#12
Jennie Granger, Roy Mahapatra, Bushra Hamid, Katherine Gillespie, Matthew Fok, Dale Vimalachandran
Mesenteric paragangliomas are a rare entity; consequently, only 12 cases have been reported to date. Although considered benign and often found incidentally, they have the potential to metastasize and are an important diagnosis to consider for patients with a mesenteric tumor. We report the case of a 71-year-old woman who was found on magnetic resonance imaging to have an incidental, large, complex, intra-abdominal mass that had initially been misdiagnosed as ovarian in origin. She underwent an open resection of the tumor and adjacent small bowel with no perioperative complications; histology confirmed the mass to be a mesenteric paraganglioma...
October 2017: Annals of Coloproctology
https://www.readbyqxmd.com/read/29159167/accuracy-of-preoperative-local-staging-of-primary-colorectal-cancer-by-using-computed-tomography-reappraisal-based-on-data-collected-at-a-highly-organized-cancer-center
#13
Jung Sub So, Chinock Cheong, Seung Yeop Oh, Jei Hee Lee, Young Bae Kim, Kwang Wook Suh
Purpose: In patients with colorectal cancer, preoperative staging using various imaging technologies is important for establishing the treatment plan and predicting the prognosis. Although computed tomography (CT) has been used most widely, the versatility of CT accuracy was primarily because of the lack of specialization. In this study, we aimed to identify whether any advancement in abdominal CT accuracy in the prediction of local staging has occurred. Methods: Between December 2014 and November 2015, patients with colorectal cancer were retrospectively enrolled...
October 2017: Annals of Coloproctology
https://www.readbyqxmd.com/read/29159031/solitary-fibrous-tumor-of-the-abdominal-wall-re-surfacing-as-unilateral-pleural-effusion-and-mass-a-case-report-and-review-of-the-literature
#14
Xia Bi, Jixian Zhai, Carrie D Chun
Background: Solitary fibrous tumors (SFTs) are rare fibroblastic mesenchymal neoplasms that were initially described in the pleura, but have been increasingly recognized to occur in other parts of the body. They have been traditionally regarded as indolent tumors that are rare to metastasize after surgical resection. Here, we describe a case of a Filipino female who initially presented with unilateral pleural effusion and mass, and was ultimately diagnosed with recurrent solitary fibrous tumor that originated from the abdominal wall...
2018: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/29157746/particle-filter-based-target-tracking-algorithm-for-magnetic-resonance-guided-respiratory-compensation-robustness-and-accuracy-assessment
#15
Alexandra E Bourque, Stéphane Bedwani, Jean-François Carrier, Cynthia Ménard, Pim Borman, Clemens Bos, Bas W Raaymakers, Nikolai Mickevicius, Eric Paulson, Rob H N Tijssen
PURPOSE: To assess overall robustness and accuracy of a modified particle filter-based tracking algorithm for magnetic resonance (MR)-guided radiation therapy treatments. METHODS AND MATERIALS: An improved particle filter-based tracking algorithm was implemented, which used a normalized cross-correlation function as the likelihood calculation. With a total of 5 healthy volunteers and 8 patients, the robustness of the algorithm was tested on 24 dynamic magnetic resonance imaging (MRI) time series with varying resolution, contrast, and signal-to-noise ratio...
October 12, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29157085/sequential-occurrence-of-small-cell-and-non-small-lung-cancer-in-a-male-patient-is-it-a-transformation
#16
Ahsan Wahab, Kavitha Kesari, Siddique Chaudhary, Mahin Khan, Hafiz Khan, Susan Smith, Yanis Boumber
Lung cancer is one of the leading causes of cancer-related mortality and is categorized into small cell lung cancer (SCLC) and non-small cell lung cancer (NSCLC). We present a patient with epidermal growth factor receptor (EGFR)-mutant-NSCLC who developed metastatic SCLC after initial therapy with second-generation EGFR-tyrosine kinase inhibitor, afatinib. A 65-year-old male non-smoker was diagnosed with adenocarcinoma of the right lung, stage IVA (M1a). Due to tumor positivity for EGFR-Exon 19 deletion, the patient was started on oral afatinib, which resulted in a partial response...
November 20, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29154080/changes-in-gene-expression-in-small-bowel-neuroendocrine-tumors-associated-with-progression-to-metastases
#17
Kendall J Keck, Patrick Breheny, Terry A Braun, Benjamin Darbro, Guiying Li, Joseph S Dillon, Andrew M Bellizzi, Thomas M O'Dorisio, James R Howe
BACKGROUND: Small bowel neuroendocrine tumors (SBNETs) present frequently with metastases, yet little is known about the molecular basis of this progression. This study sought to identify the serial differential expression of genes between normal small bowel, primary small bowel neuroendocrine tumors, and liver metastases. METHODS: RNA isolated from matched normal small bowel tissue, primary small bowel neuroendocrine tumors, and liver metastases in 12 patients was analyzed with whole transcriptome expression microarrays and RNA-Seq...
November 16, 2017: Surgery
https://www.readbyqxmd.com/read/29153358/impact-of-noise-optimized-virtual-monoenergetic-dual-energy-computed-tomography-on-image-quality-in-patients-with-renal-cell-carcinoma
#18
Simon S Martin, Julian L Wichmann, Sophia Pfeifer, Doris Leithner, Lukas Lenga, Michael A Reynolds, Tommaso D'Angelo, Renate Hammerstingl, Tatjana Gruber-Rouh, Thomas J Vogl, Moritz H Albrecht
OBJECTIVE: The aim of this study was to evaluate the impact of a noise-optimized virtual monoenergetic imaging (VMI+) reconstruction technique on image quality and lesion delineation in patients with renal cell carcinoma (RCC) undergoing abdominal dual-energy computed tomography (DECT). MATERIALS AND METHODS: Fifty-two patients (33 men; 61.5±13.6years) with RCC underwent contrast-enhanced DECT during the corticomedullary and nephrogenic phase of renal enhancement...
December 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/29152519/primary-carcinosarcoma-of-the-pancreas-with-cd10-positive-sarcoma-component
#19
Christine J Salibay, Julia Rewerska, Shweta Gupta, Nicholas Ree
Carcinosarcomas of the pancreas are rare entities with a dismal prognosis. We report a rare case of pancreatic carcinosarcoma in a 49-year-old African American female who underwent a total abdominal hysterectomy with right salpingo-oophorectomy and exploration of the pancreatic mass. The surgery revealed a sclerotic mass in the body and tail of the pancreas that was surgically unresectable, and a pancreatic biopsy confirmed the pathology of pancreatic carcinosarcoma. Histologically, the lesion showed a high-grade spindle cell sarcoma and adjacent moderately differentiated adenocarcinoma...
October 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/29151411/-protective-effect-of-thalidomide-on-ali-induced-by-paraquat-poisoning-in-rats-and-its-mechanism
#20
Tao Liu, Yuan Xie, Mengtong Xu, Fenshuang Zheng
OBJECTIVE: To investigate the protective effect of thalidomide on acute lung injury (ALI) induced by paraquat (PQ) poisoning in rats and its possible mechanism. METHODS: Sixty SPF Wistar rats were randomly divided into six groups with 10 rats in each group. The rat model of PQ poisoning was reproduced by intraperitoneal injection of PQ solution 20 mg/kg (PQ model group), and the rats were treated by intraperitoneal injection of gradient thalidomide (50, 100, 200 mg/kg treatment groups) 30 minutes later continuously for 3 days...
November 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
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