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Yolk sac tumor

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https://www.readbyqxmd.com/read/28539838/andrographolide-inhibits-angiogenesis-by-inhibiting-the-mir-21-5p-timp3-signaling-pathway
#1
Jianwei Dai, Yuyin Lin, Youfa Duan, Zixuan Li, Dalei Zhou, Wensheng Chen, Lijing Wang, Qian-Qian Zhang
Angiogenesis provides nutrients and oxygen to promote tumor growth and affords a channel that facilitates tumor cell entry into the circulation. Andrographolide (Andro) possess anti-tumor activity; however, its direct effect on angiogenesis still needs to be clarified. In this study, our experiments revealed that Andro significantly inhibited vascular growth in chick embryo chorioallantoic membrane (CAM) and yolk sac membrane (YSM) models. Meanwhile, tumor angiogenesis was also suppressed by Andro. Additionally, we found that cell proliferation, migration and tube formation of vascular endothelial cells was inhibited by Andro treatment in vitro...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28527702/crispr-cas9-induced-disruption-of-wt1a-and-wt1b-reveals-their-different-roles-in-kidney-and-gonad-development-in-nile-tilapia
#2
Dongneng Jiang, Jinlin Chen, Zheng Fan, Dejie Tan, Jiue Zhao, Hongjuan Shi, Zhilong Liu, Wenjing Tao, Minghui Li, Deshou Wang
Wilms tumor 1 (Wt1) is an essential factor for urogenital system development. Teleosts have two wt1s, named as wt1a and wt1b. In this study, the expression pattern of wt1a and wt1b and their functions on the urogenital system were analyzed by in situ hybridization and CRISPR/Cas9. wt1a was found to be expressed in the glomerulus at 3 dah (days after hatching), earlier than wt1b. wt1a and wt1b were simultaneously expressed in the somatic cells of gonads at 3 dah, while their cell locations were similar, but not identical in adult fish gonads...
May 17, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28520571/is-omentectomy-mandatory-among-early-stage-i-ii-malignant-ovarian-germ-cell-tumor-patients-a-retrospective-study-of-223-cases
#3
Wenyan Xu, Yanfang Li
OBJECTIVE: The aim of the study was to investigate whether omentectomy (OMT) is necessary in the operation for apparently early stage malignant ovarian germ cell tumors (MOGCTs). METHODS AND MATERIALS: Searching medical records database of Sun Yat-sen University Cancer Center from January 1, 1966, to November 30, 2015, patients with MOGCTs were identified and their age, year of diagnosis, tumor grade, histologic subtype, International Federation of Gynecology and Obstetrics stage, nodal findings, gross observation of omentum, and performance of OMT were assessed...
May 18, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28500032/senescence-gives-insights-into-the-morphogenetic-evolution-of-anamniotes
#4
Éric Villiard, Jean-François Denis, Faranak Sadat Hashemi, Sebastian Igelmann, Gerardo Ferbeyre, Stéphane Roy
Senescence represents a mechanism to avoid undesired cell proliferation that plays a role in tumor suppression, wound healing and embryonic development. In order to gain insight on the evolution of senescence, we looked at its presence in developing axolotls (urodele amphibians) and in zebrafish (teleost fish), which are both anamniotes. Our data indicate that cellular senescence is present in various developing structures in axolotls (pronephros, olfactory epithelium of nerve fascicles, lateral organs, gums) and in zebrafish (epithelium of the yolk sac and in the lower part of the gut)...
May 12, 2017: Biology Open
https://www.readbyqxmd.com/read/28474163/-germ-cell-and-sex-cord-stromal-tumors-of-the-testis-who-classification-2016
#5
G Mikuz
Earlier revisions of the WHO classification of testicular tumors, which was originally published in 1977, contained only minor additions. In the WHO 2016 classification, in contrast, germ cell tumors are split into two major groups based on their distinct pathohistogenesis, i. e., those which derive from an in situ forerunner lesion and those which do not. The latter category includes prepubertal yolk sac tumors and teratomas, as well as spermatocytic seminoma. The classification of yolk sac tumors and teratomas as arising before or after puberty is also of prognostic value...
May 4, 2017: Der Pathologe
https://www.readbyqxmd.com/read/28469317/impact-of-surepath-%C3%A2-liquid-based-preparation-in-cytological-analysis-of-peritoneal-washing-in-practice-of-gynecologic-oncology
#6
Ruchita Tyagi, Nalini Gupta, Priyanka Bhagat, Shalini Gainder, Bhavna Rai, L K Dhaliwal, Arvind Rajwanshi
CONTEXT: Peritoneal washing is performed for staging of gynecologic tumors to detect subclinical intraperitoneal metastases. AIM: The aim of the present study was to assess the impact of SurePath™ liquid-based cytology (LBC) in peritoneal washing in various gynecological malignancies. SETTINGS AND DESIGN: An audit of peritoneal-fluid/washing (January 2012 to July 2013) was performed with corresponding gynecologic specimens. All peritoneal washings were processed using both conventional and LBC technique...
April 2017: Journal of Cytology
https://www.readbyqxmd.com/read/28469308/primary-intrarenal-yolk-sac-tumor
#7
Narasimhan Ragavan, P Dholakia Kunal, S Annapurneshwari
Extragonadal germ cell tumors (EGGCTs) usually are not coexistent with a gonadal tumor, hence in a way, are primary and are rare. The origin of primary EGGCT is still a matter of debate. Herewith, we report a patient with primary intrarenal yolk sac tumor in a 43-year-old man. The purpose of this report is to add a rare tumor to the differential diagnosis of renal neoplasms.
April 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28454378/prognostic-value-of-intratumoral-carbonic-anhydrase-ix-expression-in-testicular-germ-cell-tumors
#8
Katarina Kalavska, Zuzana Cierna, Michal Chovanec, Martina Takacova, Daniela Svetlovska, Viera Miskovska, Jana Obertova, Patrik Palacka, Jan Rajec, Zuzana Sycova-Mila, Katarina Machalekova, Karol Kajo, Stanislav Spanik, Jozef Mardiak, Pavel Babal, Silvia Pastorekova, Michal Mego
Testicular germ cell tumors (TGCTs) represent a highly curable malignancy, however a small proportion of patients fails to be cured with cisplatin-based chemotherapy. Carbonic anhydrase IX (CA IX) is upregulated by hypoxia in several cancer types and correlates with a poor prognosis. The present translational study evaluated expression and prognostic value of CA IX in TGCTs. Surgical specimens from 228 patients with TGCTs were processed by the tissue microarray method and subjected to immunohistochemistry with the M75 monoclonal antibody...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28429716/polyembryoma-of-the-testis-a-report-of-two-cases-dominant-within-mixed-germ-cell-tumors-and-review-of-gonadal-polyembryomas
#9
REVIEW
Jennifer N Stall, Robert H Young
Two testicular mixed germ cell tumors, from men of 21 and 41 years, in which polyembryoma predominated are described. A literature review uncovered an additional five testicular and nine ovarian cases. One tumor occurred in a 60-year-old man, but all others occurred within the typical age range of gonadal germ cell tumors. One male presented with gynecomastia and one female with sexual precocity, but all otherwise had standard clinical manifestations. These tumors are typically large with non-specific gross features, but a few have a prominent hemorrhagic appearance...
April 21, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28429039/-true-thymic-hyperplasia-differential-diagnosis-of-thymic-mass-lesions-in-neonates-and-children
#10
C-A Weis, B Märkl, T Schuster, K Vollert, P Ströbel, A Marx
Reactive and neoplastic thymic pathologies are the main considerations in the case of masses in the anterior and middle part of the mediastinum, while neurogenic tumors are predominant in the posterior mediastinum (which are not dealt with here). In neonates and infants, the commonest pathologies in the anterior mediastinum comprise germ cell tumors (mainly teratomas), congenital thymic cysts and true thymic hyperplasia (TTH). In toddlers, teratomas, yolk sac tumors and cysts predominate. In children over 5 years of age, lymphomas are the commonest mass lesions whereas thymomas and thymic carcinomas are rare...
April 20, 2017: Der Pathologe
https://www.readbyqxmd.com/read/28423604/clinicopathologic-and-prognostic-characteristics-of-alpha-fetoprotein-producing-gastric-cancer
#11
Ruji He, Qinyi Yang, Xuqiang Dong, Yao Wang, Weiming Zhang, Lizong Shen, Zhihong Zhang
Alpha-fetoprotein-producing gastric cancer (AFPGC) accounts for 1.5%-7.1% of all gastric cancer cases. Compared with other types of gastric cancer, AFPGC is more aggressive and prone to liver and lymph node (LN) metastasis, with extremely poor prognosis. To improve understanding of AFPGC we reviewed a consecutive series of 82 AFPGC patients and investigated the prognostic factors. The incidence of AFPGC among our gastric cancer patients was 1.95%, and 29.27% of AFPGCs were diagnosed with metastasis at the time of presentation, mainly liver metastasis...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423520/prognostic-role-of-programmed-death-ligand-1-pd-l1-expressing-tumor-infiltrating-lymphocytes-in-testicular-germ-cell-tumors
#12
Michal Chovanec, Zuzana Cierna, Viera Miskovska, Katarina Machalekova, Daniela Svetlovska, Katarina Kalavska, Katarina Rejlekova, Stanislav Spanik, Karol Kajo, Pavel Babal, Jozef Mardiak, Michal Mego
PURPOSE: Testicular germ cell tumors (TGCTs) are nearly universally curable malignancies. Nevertheless, standard cisplatin-based chemotherapy is not curative in a small subgroup of patients. Previously, we showed that PD-L1 overexpression is associated with worse prognosis in TGCTs, while tumor infiltrating lymphocytes (TILs) are prognostic in different types of cancer. This study aimed to evaluate the prognostic value of PD-1 and PD-L1 expressing TILs in TGCTs. RESULTS: PD-L1 positive TILs were found significantly more often in seminomas (95...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414684/who-shot-the-cannonballs-extensive-lung-metastases-in-a-39-year-old-man
#13
D Sommerhalder, J Blondin
CASE: A 39 year-old man presented to the emergency department complaining of a cough of 2 months in duration. He also complained of weight loss of 20 pounds in two months and night sweats over the same period. An x-ray of the chest was performed and revealed innumerable lung nodules and masses. Computed tomography of the chest and abdomen were subsequently performed which confirmed the masses, but imaging did not reveal an obvious primary source. A testicular exam was performed but no obvious abnormalities were noted...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28372870/analysis-of-outcomes-and-prognostic-factors-after-fertility-sparing-surgery-in-malignant-ovarian-germ-cell-tumors
#14
Jeong-Yeol Park, Dae-Yeon Kim, Dae-Shik Suh, Jong-Hyeok Kim, Yong-Man Kim, Young-Tak Kim, Joo-Hyun Nam
OBJECTIVE: To evaluate the oncologic and reproductive outcomes and to analyze prognostic factors after fertility-sparing surgery in patients with early and advanced malignant ovarian germ cell tumors (MOGCTs). METHODS: This study included 171 patients who underwent fertility-sparing surgery. Data were gathered from patients' medical records. Survival analysis was performed using the log-rank test and Cox's proportional hazards model. Reproductive outcomes were analyzed...
March 31, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28355107/pathology-of-aging-in-nod-scid-gamma-female-mice
#15
Sara F Santagostino, Rodolfo J Ricart Arbona, Melissa A Nashat, Julie R White, Sebastien Monette
In the past decade, NOD.Cg- Prkdc(scid) Il2rg(tm1Wjl)/SzJ (NSG, NOD scid gamma) mice have become a model of choice in several areas of biomedical research; however, comprehensive data on their spontaneous age-related pathology are not currently available in the literature. The prevalence of spontaneous morbidity affecting aged NSG female breeders enrolled in a parasitology study was documented with classification of neoplastic and non-neoplastic (inflammatory, metabolic, degenerative) lesions. Malignant mammary neoplasms were most commonly diagnosed, often accompanied by pulmonary metastases, while a low frequency of lymphoma and histiocytic sarcoma was documented...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28331810/juvenile-granulosa-cell-tumor-of-the-testicle-report-of-a-neonatal-case-with-positive-alpha-fetoprotein-immunohistochemical-staining
#16
Melissa Dundas, Mark Horowitz, Richard Sidlow
We report on a case of juvenile granulosa cell tumor of the testicle in a neonate, a rare testicular tumor in children. No genital ambiguity, anatomic abnormalities, nor sex chromosome aneuploidy was noted in this patient. In our case, despite positive staining for alpha-fetoprotein which is most consistent with yolk sac tumors, all clinical, gross anatomic, histologic, and other immunohistologic characteristics of the tumor remained consistent with the diagnosis of juvenile granulosa cell tumor. The alpha-fetoprotein positivity of the tumor remains unexplained...
May 2017: Urology Case Reports
https://www.readbyqxmd.com/read/28306215/primary-mediastinal-and-retroperitoneal-malignant-germ-cell-tumors-in-children-and-adolescents-results-of-the-tgm95-trial-a-study-of-the-french-society-of-pediatric-oncology-soci%C3%A3-t%C3%A3-fran%C3%A3-aise-des-cancers-de-l-enfant
#17
Hélène Sudour-Bonnange, Cécile Faure-Conter, Hélène Martelli, Frederic Hameury, Brice Fresneau, Daniel Orbach, Cécile Vérité
PURPOSE: To examine the clinical presentation, treatment and results in children and adolescents with primary mediastinal (PM) and retroperitoneal (RP) germ cell tumors (GCTs). METHODS: The TGM95 trial for malignant GCTs was conducted in France between 1995 and 2005 to evaluate a strategy adapted to prognostic factors with cisplatin-based chemotherapy and surgical management. We reviewed patients with TGCTs at PM and RP sites. RESULTS: Among 239 patients, there were 16 patients with PM and 5 with RP tumors, which represent 9% of all patients, highlighting the rarity of these extragonadal locations...
March 17, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28296679/primary-cystic-trophoblastic-tumor-of-the-testis-a-study-of-14-cases
#18
Dibson D Gondim, Thomas M Ulbright, Liang Cheng, Muhammad T Idrees
Cystic trophoblastic tumor (CTT) has been described in postchemotherapy retroperitoneal lymph node dissections of patients with testicular germ cell tumors. Prognostically, this lesion is similar to teratoma and no further treatment is required after surgery in the absence of other components. CTT has not, however, been reported in the testis. We identified 14 CTTs in the treated (4) and untreated (9; no information for 1 patient) testes of patients 15 to 43 years old (median, 25) with mixed germ cell tumors...
June 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28262537/robot-assisted-retroperitoneal-lymph-node-dissection-ra-rplnd-in-the-adolescent-population
#19
A P Glaser, D K Bowen, B W Lindgren, J J Meeks
BACKGROUND: Robot-assisted retroperitoneal lymph node dissection (RA-RPLND) has built on success and techniques of laparoscopic RPLND, with the added benefits of robotic technology. This paper demonstrates use of the da Vinci Xi(®) system for RA-RPLND in two adolescent patients. METHODS: Case #1: A 17-year-old male presented with a left testicular mass and elevated alpha-fetoprotein (AFP) and human chorionic gonadotropin (HCG). Pathology revealed a mixed non-seminomatous germ cell tumor (60% embryonal, 35% yolk sac, 5% choriocarcinoma, + lymphovascular invasion)...
February 17, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28249923/morphoproteomics-identifies-the-ezh2-and-sirt1-pathways-as-potential-blocks-to-differentiation-in-yolk-sac-tumor-of-the-ovary-and-provides-therapeutic-options-a-case-study
#20
Yumi A Kojima, Binara Assylbekova, Bihong Zhao, Elizabeth Nugent, Robert E Brown
Yolk sac tumor of the ovary is a rare but highly malignant and aggressive germ cell tumor. The objective of this case study of an ovarian yolk sac tumor was to identify putative pathways that are known to pose a block in differentiation, both in early embryogenesis and in tumorigenesis, that might be amenable to low toxicity therapies designed to promote differentiation to a more benign state and prevent recurrent disease in such tumors. The enhancer of Zeste homolog 2 (EZH2), a histone methyl transferase, and silent mating type information regulation 2 homolog 1 (SIRT1), a NAD+ histone deacetylase, are two such pathways...
January 2017: Annals of Clinical and Laboratory Science
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