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Vivek Murthy, Janna Minehart, Daniel H Sterman
Modern cancer immunotherapies represent a major shift in paradigm with respect to how we understand innate and adaptive responses to malignancy. Successful tumors co-opt normal immunosurveillance mechanisms by potent interactions between the tumor and local draining lymph nodes. Tumor cells mediate a complex and dynamic immunoediting procedure that results in increased vascular efflux into the draining lymphatics, an immunosuppressive microenvironment rich in regulatory T-lymphocytes, dysfunctional antigen presentation, and downregulation of normal effector lymphocyte responses...
December 1, 2017: Journal of the National Cancer Institute
Rajiv N Srinivasa, Jeffrey Forris Beecham Chick, Joseph J Gemmete, Anthony N Hage, Ravi N Srinivasa
INTRODUCTION: To report the technical and clinical success of performing minimally invasive endolymphatic embolization in neonates presenting with a chylothorax or chylous ascites. MATERIALS AND METHODS: 3 neonates, 2 males and 1 female, with a mean age of 28 days (range: 19-39 days) presented with a chylothorax (2) or chylous ascites (1) which was refractory to conservative management. All 3 patients (1 previously reported) underwent intranodal lymphangiography followed by thoracic duct embolization with 1 patient undergoing additional sclerosis of the retroperitoneal abdominal lymphatics...
March 7, 2018: Annals of Vascular Surgery
Ali Afshar-Oromieh, Lars Peter Sattler, Katja Steiger, Tim Holland-Letz, Marcelo Livorsi da Cunha, Walter Mier, Oliver Neels, Klaus Kopka, Wilko Weichert, Uwe Haberkorn
PURPOSE: Since the introduction of68 Ga-PSMA-11 PET/CT for imaging prostate cancer (PC) we have frequently observed mediastinal lymph nodes (LN) showing tracer uptake despite being classified as benign. The aim of this evaluation was to further analyze such LN. METHODS: Two patient groups with biphasic68 Ga-PSMA-11 PET/CT at 1 h and 3 h p.i. were included in this retrospective evaluation. Group A (n = 38) included patients without LN metastases, and group B (n = 43) patients with LN metastases of PC...
March 1, 2018: European Journal of Nuclear Medicine and Molecular Imaging
Hisako Hara, Makoto Mihara, Masayoshi Yamamoto
Chylothorax is a challenging disease. We present a case of traumatic chylothorax that was successfully treated using lymphangiography through intranodal injection of contrast agent. A 17-year-old girl had chylothorax. It did not improve despite medical treatment. We performed lymphangiography through intranodal injection of an oil contrast agent (Lipiodol). The amount of chylothorax was reduced from 1000 to 120 mL/d, and we could remove the thoracotomy tube. Thereafter, although she had a small amount of pleural effusion, she has not demonstrated aggravation for 19 months...
March 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
James Abbott, Meghan Buckley, Laura A Taylor, George Xu, Giorgos Karakousis, Brian J Czerniecki, Phyllis A Gimotty, Paul J Zhang
AIMS: To further characterize the micromorphometric immunological pattern to metastatic melanoma in SLN biopsies and completion lymph node (CLN) dissections and their relation to 5-year overall survival. METHODS: Retrospective cohort of 49 patients from 1996 to 2005 with a positive SLN who underwent CLN dissection were studied. Micromorphometric characteristics included: follicular center count per profile (FCC), sinus histiocytosis, metastatic size, tumor infiltrating lymphocytes (intranodal), paracortial dendritic cells, germinal center reaction, and morphology...
February 15, 2018: Journal of Cutaneous Pathology
Masayoshi Yamamoto, Kentaro Yamada, Masahiro Horikawa, Hiroshi Kondo, Hiroshi Oba, Shigeru Furui
PURPOSE: To report embolization of the thoracic duct by direct injection of N-butyl-2-cyanoacrylate (NBCA) glue via a puncture needle. MATERIALS AND METHODS: Two cases of high output chylothorax were successfully treated with direct injection of N-butyl-2-cyanoacrylate (NBCA) glue via a puncture needle. In them, conventional thoracic duct embolization (TDE) was attempted, but the cisterna chyli was absent on intranodal lymphangiography, and probably for this reason catheterization of the thoracic duct was unsuccessful...
February 7, 2018: Cardiovascular and Interventional Radiology
Xin-Chen Wang, Kai-Yang Ding, Xiao-Qiu Wang, Zhi-Hua Wang, Jue Wang
OBJECTIVE: To investigate the expression and prognosis significance of receptor interacting protein 2 (RIP2) in diffuse large B-cell lymphoma (DLBCL). METHODS: The expression of RIP2 in DLBCL GCB and non-GCB type was detected by immunohistochemistry, at same time the expressions of BCL-2 and C-MYC were detected. Then, the role of RIP2 in development of DLBCL was analyzed by related clinical and pathological parameters. RESULTS: The expression of RIP2 was related with middle-high risk group by IPI score, the An Arbor stage III+IV and intranodal lesions, and the differences were statistically significant (P<0...
February 2018: Zhongguo Shi Yan Xue Ye Xue za Zhi
Claudio Luchini, Nicola Veronese, Alessia Nottegar, Monica Cheng, Takuma Kaneko, Camilla Pilati, Fabrizio Tabbò, Brendon Stubbs, Antonio Pea, Fabio Bagante, Jacopo Demurtas, Matteo Fassan, Maurizio Infante, Liang Cheng, Aldo Scarpa
Extranodal extension (ENE) of nodal metastasis is defined as the extension of metastatic cells through the nodal capsule into the perinodal tissue. This morphological parameter, recently proposed as an important prognostic factor in different types of malignancy, has not been included in the TNM staging system for non-small cell lung cancer (NSCLC). In this systematic review with meta-analysis, we weighted the prognostic role of ENE in patients with lymph node-positive NSCLC. Two independent authors searched SCOPUS and PubMed through 28 February 2017...
February 1, 2018: Virchows Archiv: An International Journal of Pathology
Nicole Jungwirth, Johannes Junginger, Christoph Andrijczuk, Wolfgang Baumgärtner, Peter Wohlsein
Plexiform vasculopathy refers to an endothelial proliferative disorder affecting cervical or inguinal lymph nodes of cats. The cause of this disorder and the origin of the proliferating endothelial cells are still unknown. In 4 cats with a history of a slowly growing, well-demarcated, nonpainful mass adjacent to the thyroid gland, an enlarged dark brown to red lymph node was removed. Histologically, the lymph nodes showed severe loss of lymphoid tissue with accumulations of erythrocytes. In addition, networks of capillary structures with well-differentiated endothelial cells on a collagen-rich stroma were observed, consistent with benign plexiform vasculopathy...
January 1, 2018: Veterinary Pathology
Leila Bouhajja, Raja Jouini, Olfa Khayat, Wafa Koubâa, Chiraz Mbarek, Ehsen Ben Brahim, Achraf Chedly-Debbiche
Intranodal palisaded myofibroblastoma (IPM), also known as "intranodal hemorrhagic spindle cell tumor with amianthoid fibers," is a rare benign mesenchymal tumor originating from smooth muscle cells and myofibroblasts, often with the presence of amianthoid fibers. Usually IPM affects inguinal lymph nodes, but three cases have been described in the submandibular and cervical lymph nodes. We report a new case of a 44-year-old women with submandibular mass. Cervical ultrasound showed a suspect right submandibular adenomegaly...
2017: Case Reports in Otolaryngology
Santiago Saura
Zamborain-Mason et al. (Ecol. Lett., 20, 2017, 815-831) state that they have newly proposed network metrics that account for node self-connections. Network metrics incorporating node self-connections, also referred to as intranode (intrapatch) connectivity, were however already proposed before and have been widely used in a variety of conservation planning applications.
February 2018: Ecology Letters
Sarah J Kane, Taylor K Farley, Elizabeth O Gordon, Joshua Estep, Heather R Bender, Julie A Moreno, Jason Bartz, Glenn C Telling, Matthew C Pickering, Mark D Zabel
Several complement proteins exacerbate prion disease, including C3, C1q, and CD21/35. These proteins of the complement cascade likely increase uptake, trafficking, and retention of prions in the lymphoreticular system, hallmark sites of early prion propagation. Complement regulatory protein factor H (fH) binds modified host proteins and lipids to prevent C3b deposition and, thus, autoimmune cell lysis. Previous reports show that fH binds various conformations of the cellular prion protein, leading us to question the role of fH in prion disease...
December 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
Amitabh Singh, Smaranjit Chatterjee, Prashant Bansal, Abhishek Bansal, Sudhir Rawal
INTRODUCTION: We aimed to evaluate the surgical feasibility, complication, and oncological outcome of robot-assisted retroperitoneal lymph node dissection (RA-RPLND) in patients of testicular tumor with postchemotherapy residual retroperitoneal mass. METHODS: A total of 13 patients underwent RA-RPLND between January 2012 and September 2016 at our institute. A study was started on December 2015, so data were collected retrospectively and prospectively regarding patient demography, tumor characteristics, surgical, pathological outcome, and oncological outcome...
October 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
Govind B Chavhan, Joao G Amaral, Michael Temple, Maxim Itkin
The lymphatic system, an important component of the circulatory system with essential physiologic functions, can be affected by various disease processes. There has been a delay in the development of effective imaging methods for the lymphatic system due to its small size, which limits visualization as well as introduction of contrast material. Traditionally, the lymphatic system has been imaged by injecting contrast material or radiotracers into the feet or hands. This is not sufficient for assessment of the central conducting lymphatics (CCLs) (such as the thoracic duct or the cisterna chyli)...
October 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
Bill S Majdalany, Wael A Saad, Jeffrey Forris Beecham Chick, Minhaj S Khaja, Kyle J Cooper, Ravi N Srinivasa
BACKGROUND: Interventional radiology treatment of chylothorax is well described in adults, with high technical and clinical success that decreases patient morbidity and mortality. However there is limited experience in children. OBJECTIVE: To report the technical and clinical success of lymphangiography, thoracic duct embolization and thoracic duct disruption in the pediatric population. MATERIALS AND METHODS: We studied 11 pediatric patients (7 boys, 4 girls; median weight 6...
September 28, 2017: Pediatric Radiology
Shabnum Meer, Shailen Dulabh
BACKGROUND: Cystic lymphoid hyperplasia (CLH) describes benign salivary lymphoepithelial cysts with a strong link to human immunodeficiency virus (HIV) infection and acquired immunodeficiency syndrome (AIDS). The pathogenesis is related to ductal dilatation of entrapped salivary elements due to intranodal HIV-associated atypical lymphoid hyperplasia. Very little is known about the immunophenotypic profile of this entity. AIM: This study aims to describe the immunopathological features of a series of CLH cases in HIV-positive patients to clarify the etiopathogenesis...
July 2017: Indian Journal of Pathology & Microbiology
Quinn C Meisinger, Sophia O'Brien, Maxim Itkin, Gregory J Nadolski
PURPOSE: To examine effects of lower extremity sequential compression devices (SCDs) on lymphatic transit during intranodal lymphangiography (IL) and thoracic duct interventions. MATERIALS AND METHODS: A retrospective review of 19 SCD-assisted IL (IL-SCD) procedures was performed. The control group comprised 18 consecutive IL-guided procedures performed in the immediately preceding time period. For IL-SCD procedures, SCDs were placed onto patients' calves before sterile preparation...
November 2017: Journal of Vascular and Interventional Radiology: JVIR
Stefania Rizzo, Davide Radice, Marco Femia, Paolo De Marco, Daniela Origgi, Lorenzo Preda, Massimo Barberis, Raffaella Vigorito, Giovanni Mauri, Alberto Mauro, Massimo Bellomi
OBJECTIVES: To evaluate quantification of iodine uptake in metastatic and non-metastatic lymph nodes (LNs) by dual-energy CT (DECT) and to assess if the distribution of iodine within LNs at DECT correlates with the pathological structure. METHODS: Ninety LNs from 37 patients (23 with lung and 14 with gynaecological malignancies) were retrospectively selected. Information of LNs sent for statistical analysis included Hounsfield units (HU) at different energy levels; decomposition material densities fat-iodine, iodine-fat, iodine-water, water-iodine...
February 2018: European Radiology
Mohammad Jafarnejad, David C Zawieja, Bindi S Brook, Robert J B Nibbs, James E Moore
The chemokine receptor CCR7 drives leukocyte migration into and within lymph nodes (LNs). It is activated by chemokines CCL19 and CCL21, which are scavenged by the atypical chemokine receptor ACKR4. CCR7-dependent navigation is determined by the distribution of extracellular CCL19 and CCL21, which form concentration gradients at specific microanatomical locations. The mechanisms underpinning the establishment and regulation of these gradients are poorly understood. In this article, we have incorporated multiple biochemical processes describing the CCL19-CCL21-CCR7-ACKR4 network into our model of LN fluid flow to establish a computational model to investigate intranodal chemokine gradients...
October 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
Ning Li, Brian J Hansen, Thomas A Csepe, Jichao Zhao, Anthony J Ignozzi, Lidiya V Sul, Stanislav O Zakharkin, Anuradha Kalyanasundaram, Jonathan P Davis, Brandon J Biesiadecki, Ahmet Kilic, Paul M L Janssen, Peter J Mohler, Raul Weiss, John D Hummel, Vadim V Fedorov
The human sinoatrial node (SAN) efficiently maintains heart rhythm even under adverse conditions. However, the specific mechanisms involved in the human SAN's ability to prevent rhythm failure, also referred to as its robustness, are unknown. Challenges exist because the three-dimensional (3D) intramural structure of the human SAN differs from well-studied animal models, and clinical electrode recordings are limited to only surface atrial activation. Hence, to innovate the translational study of human SAN structural and functional robustness, we integrated intramural optical mapping, 3D histology reconstruction, and molecular mapping of the ex vivo human heart...
July 26, 2017: Science Translational Medicine
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