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https://www.readbyqxmd.com/read/27911225/successful-treatment-of-mixed-yolk-sac-tumor-and-mature-teratoma-in-the-spinal-cord-case-report
#1
Akitake Mukasa, Shunsuke Yanagisawa, Kuniaki Saito, Shota Tanaka, Keisuke Takai, Junji Shibahara, Masachika Ikegami, Yusuke Nakao, Katsushi Takeshita, Masao Matsutani, Nobuhito Saito
Primary spinal germ cell tumors are rare, and spinal nongerminomatous germ cell tumors represent an even rarer subset for which no standard therapy has been established. The authors report the case of a 24-year-old woman with multifocal primary spinal germ cell tumors scattered from T-12 to L-5 that consisted of yolk sac tumor and mature teratoma. After diagnostic partial resection, the patient was treated with 30 Gy of craniospinal irradiation and 30 Gy of local spinal irradiation, followed by 8 courses of chemotherapy based on ifosfamide, cisplatin, and etoposide (ICE)...
December 2, 2016: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27895375/clinical-profile-treatment-and-survival-outcomes-of-peadiatric-germ-cell-tumours-a-pakistani-perspective
#2
Irfan Ul Islam Nasir, Muhammad Ijaz Ashraf, Nouman Ahmed, Muhammad Fahd Shah, Muhammad Taqi Pirzada, Amir Ali Syed, Abid Quddus Qazi
Germ Cell Tumours (GCTs) are rare tumours. Generally 80% are benign and 20% malignant with a bimodal age distribution. The retrospective study was conducted at Shaukat Khanum Cancer Hospital, Lahore, Pakistan, and comprised all paediatric patients below 18 years of age who received treatment for histology-proven GCT from 2006 to 2014. Of the 207 patients, 98(42.3%) were males and 109(52.7%) were females. The most common GCT was yolk sac tumour in 90(43.5%) children followed by mixed GCT in 40(19.3%) and dysgerminoma in 34(16...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27891246/two-headed-mutants-of-the-lamprey-a-basal-vertebrate
#3
Daichi G Suzuki
BACKGROUND: This is the first report of two-headed (bicephaly) lamprey twins. Although lampreys sit at a crucial phylogenetic position, there are only a few reports on their teratology and developmental abnormalities. RESULTS: Two-headed mutants were obtained by artificial fertilization in the laboratory as spontaneous occurrences. All mutants were derived from single fertilizations using single male and female gametes, suggestive of a genetic background. The anterio-posterior position of the axonal bifurcation and symmetricity varied in each mutant...
2016: Zoological Letters
https://www.readbyqxmd.com/read/27887023/a-case-of-primary-intracardiac-yolk-sac-tumour-with-extracardiac-extension
#4
Moosa Kunhi, Sachin Sanagar, N Jagadeesh, Vadanattathil P Gangadharan, Anand Kumar, Pushpa Mahadevan
Primary cardiac tumour is a rare entity as secondaries in the heart are more common. A 2-year-old child was having repeated respiratory tract infection with poor oral intake and poor activity for 3 months. His symptoms progressed from New York Heart Association (NYHA) Class II to IV. On evaluation he had an intracardiac mass with extracardiac extension. Emergency tumour excision under deep hypothermic circulatory arrest was performed with provisional diagnosis of sarcoma. But Serum markers, histopathological examination and immunohistochemistry confirmed diagnosis of yolk sac tumour...
November 24, 2016: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/27880904/lyve1-marks-the-divergence-of-yolk-sac-definitive-hemogenic-endothelium-from-the-primitive-erythroid-lineage
#5
Lydia K Lee, Yasamine Ghorbanian, Wenyuan Wang, Yanling Wang, Yeon Joo Kim, Irving L Weissman, Matthew A Inlay, Hanna K A Mikkola
The contribution of the different waves and sites of developmental hematopoiesis to fetal and adult blood production remains unclear. Here, we identify lymphatic vessel endothelial hyaluronan receptor-1 (LYVE1) as a marker of yolk sac (YS) endothelium and definitive hematopoietic stem and progenitor cells (HSPCs). Endothelium in mid-gestation YS and vitelline vessels, but not the dorsal aorta and placenta, were labeled by Lyve1-Cre. Most YS HSPCs and erythro-myeloid progenitors were Lyve1-Cre lineage traced, but primitive erythroid cells were not, suggesting that they represent distinct lineages...
November 22, 2016: Cell Reports
https://www.readbyqxmd.com/read/27879325/cushing-syndrome-in-a-child-due-to-pro-opiomelanocortin-pomc-secretion-from-a-yolk-sac-tumor
#6
Evelien Gevers, Suzanne Meredith, Pratik Shah, John Torpiano, Catherine Peters, Neil Sebire, Olga Slater, Anne White, Mehul Datani
CONTEXT: Pituitary microadenomas and adrenal tumours are the most common causes for endogenous Cushing syndrome (CS) in children. CASE DESCRIPTION: We describe a two-year old girl with Cushing syndrome due to ectopic pro-opiomelanocortin (POMC) production from an abdominal yolk sac tumor. Cortisol concentrations were elevated but adrenocorticotropic hormone (ACTH) concentrations were equivocal. The use of antibodies specifically detecting ACTH precursors revealed that plasma ACTH precursors were elevated...
November 22, 2016: European Journal of Endocrinology
https://www.readbyqxmd.com/read/27877204/increases-in-the-mean-and-variability-of-thermal-regimes-result-in-differential-phenotypic-responses-among-genotypes-during-early-ontogenetic-stages-of-lake-sturgeon-acipenser-fulvescens
#7
Kari J Dammerman, Juan P Steibel, Kim T Scribner
Climate change is affecting thermal conditions worldwide. Understanding organismal responses associated with predicted changes are essential for predicting population persistence. Few studies have examined the effects of both increased mean and variance in temperature on organismal traits, particularly during early life stages. Using lake sturgeon (Acipenser fulvescens) from Black Lake, MI, we tested whether phenotypic variation differed among families reared in two constant (10 and 18°C) and two fluctuating-temperature treatments (10-19°C) representing temperatures experienced in the river and a simulated anthropogenic disturbance...
December 2016: Evolutionary Applications
https://www.readbyqxmd.com/read/27872851/developmental-toxicity-of-carbon-quantum-dots-to-the-embryos-larvae-of-rare-minnow-gobiocypris-rarus
#8
Yuan-Yuan Xiao, Li Liu, Yao Chen, Yu-Lian Zeng, Ming-Zhi Liu, Li Jin
The toxic effects of CDs on rare minnow (Gobiocypris rarus) embryos at different developmental stages were investigated. The results showed that rare minnow embryos had decreased spontaneous movements, body length, increased heart rate, pericardial edema, yolk sac edema, tail/spinal curvature, various morphological malformations, and decreased hatching rate. Biochemical analysis showed the CDs exposure significantly inhibited the activity of Na(+)/K(+)-ATPase and Ca(2+)-ATPase and increased the MDA contents and the activity of SOD, CAT, and GPX...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27871459/morphology-histochemistry-and-glycosylation-of-the-placenta-and-associated-tissues-in-the-european-hedgehog-erinaceus-europaeus
#9
Carolyn J P Jones, A M Carter, W R Allen, Sandra A Wilsher
INTRODUCTION: There are few descriptions of the placenta and associated tissues of the European hedgehog (Erinaceus europaeus) and here we present findings on a near-term pregnant specimen. METHODS: Tissues were examined grossly and then formalin fixed and wax-embedded for histology and immunocytochemistry (cytokeratin) and resin embedded for lectin histochemistry. RESULTS: Each of four well-developed and near term hoglets displayed a discoid, haemochorial placenta with typical labyrinth and spongy zones...
December 2016: Placenta
https://www.readbyqxmd.com/read/27864380/setd5-is-essential-for-mammalian-development-and-co-transcriptional-regulation-of-histone-acetylation
#10
Anna B Osipovich, Rama Gangula, Pedro G Vianna, Mark A Magnuson
SET-domain containing proteins play a vital role in regulating gene expression during development through modifications in chromatin structure. Here we show that SET domain containing 5 (Setd5) is divergently transcribed with Gt(ROSA26)Sor, is necessary for mammalian development, and interacts with the PAF1 co-transcriptional complex and other proteins. Setd5-deficient embryos exhibit severe defects in neural tube formation, somitogenesis, and cardiac development, have aberrant vasculogenesis in embryos, yolk sacs, and placentas; and die between embryonic day 10...
November 18, 2016: Development
https://www.readbyqxmd.com/read/27862157/gonadal-tumour-risk-in-292-phenotypic-female-patients-with-disorders-of-sex-development-containing-y-chromosome-or-y-derived-sequence
#11
He Huang, Chunqing Wang, Qinjie Tian
OBJECTIVE: Phenotypic female disorders of sex development (DSD) patients with Y chromosome or Y-derived sequence have an increased risk of gonadal germ cell tumours (GCTs). The objective of the study was to evaluate tumour risk of DSD, summarize the clinical characteristics of patients with GCTs and propose management suggestions. METHODS: Medical records of 292 patients diagnosed DSD and undergoing bilateral gonadectomy at Peking Union Medical College Hospital from January 1996 to March 2016 were retrospectively reviewed...
October 13, 2016: Clinical Endocrinology
https://www.readbyqxmd.com/read/27861143/intratumoral-heterogeneity-and-chemoresistance-in-nonseminomatous-germ-cell-tumor-of-the-testis
#12
Mehmet Asim Bilen, Kenneth R Hess, Matthew T Campbell, Jennifer Wang, Russell R Broaddus, Jose A Karam, John F Ward, Christopher G Wood, Seungtaek L Choi, Priya Rao, Miao Zhang, Aung Naing, Rosale General, Diana H Cauley, Sue-Hwa Lin, Christopher J Logothetis, Louis L Pisters, Shi-Ming Tu
BACKGROUND: Nonseminomatous germ cell tumor of the testis (NSGCT) is largely curable. However, a small group of patients develop refractory disease. We investigated the hypothesis that intratumoral heterogeneity contributes to the emergence of chemoresistance and the development of refractory tumor subtypes. RESULTS: Our institution's records for January 2000 through December 2010 included 275 patients whose primary tumor showed pure embryonal carcinoma (pure E); mixed embryonal carcinoma, yolk sac tumor, and teratoma (EYT); or mixed embryonal carcinoma, yolk sac tumor, seminoma, and teratoma (EYST)...
November 16, 2016: Oncotarget
https://www.readbyqxmd.com/read/27859263/post-chemotherapy-retroperitoneal-teratoma-in-nonseminomatous-germ-cell-tumors-do-predictive-factors-exist-results-from-a-national-multicenter-study
#13
Marie Dusaud, Bernard Malavaud, Younes Bayoud, Philippe Sebe, Jean Luc Hoepffner, Laurent Salomon, Alain Houlgatte, Géraldine Pignot, Jérome Rigaud, Aude Fléchon, Christian Pfister, Morgan Rouprêt, Michel Soulié, Arnaud Méjean, Xavier Durand
BACKGROUND AND OBJECTIVES: To identify predictive preoperative factors of the presence of teratoma in retroperitoneal lymph node dissection specimens. METHODS: We performed a 20 years multicenter retrospective analysis of all patients who underwent retroperitoneal lymph node dissection for residual masses after chemotherapy (PC-RPLND). Patients had undergone PC-RPLND after chemotherapy for advanced testicular cancer. The histologic components of the primary tumor were compared with those of the residual masses using logistic regression...
November 18, 2016: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27857452/embryonic-development-and-a-quantitative-model-of-programmed-dna-elimination-in-mesocyclops-edax-s-a-forbes-1891-copepoda-cyclopoida
#14
Michelle K Clower, Ashton S Holub, Rebecca T Smith, Grace A Wyngaard
The highly programmed fragmentation of chromosomes and elimination of large amounts of nuclear DNA from the presomatic cell lineages (i.e., chromatin diminution), occurs in the embryos of the freshwater zooplankton Mesocyclops edax (S. A. Forbes, 1891) (Crustacea: Copepoda). The somatic genome is reorganized and reduced to a size five times smaller even though the germline genome remains intact. We present the first comprehensive, quantitative model of DNA content throughout embryogenesis in a copepod that possesses embryonic DNA elimination...
2016: Journal of Crustacean Biology
https://www.readbyqxmd.com/read/27846865/hysteroscopic-management-of-a-heterotopic-pregnancy-following-uterine-artery-embolization-a-case-report
#15
Jigyasa Subedi, Min Xue, Xin Sun, Dabao Xu, Xinliang Deng, Kenan Yu, Xi Yang
BACKGROUND: Intra-uterine pregnancy coexisting with cervical pregnancy (heterotopic pregnancy) is a rare condition and its management is challenging because of the massive bleeding associated with cervical pregnancy. Uterine artery embolization followed by hysteroscopic removal of cervical and intra-uterine products of conception can theoretically prevent massive bleeding and provide a direct view during the removal. Hysteroscopic management following uterine artery embolization of heterotopic pregnancy after in vitro fertilization and embryo transfer is rarely reported...
November 15, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27830100/scrotal-involvement-with-testicular-nonseminomatous-germ-cell-tumour
#16
C G O'Leary, J A Allen, F O'Brien, A Tuthill, D G Power
A 37-year-old male presented with a traumatic injury to the scrotal region necessitating emergency surgery. Evacuation of a haematoma and bilateral orchidectomy were performed. A left sided nonseminomatous germ cell tumour (NSGCT), predominantly yolk sac, was identified. Microscopic margins were positive for tumour. Initial tumour markers revealed an AFP of 22,854 ng/mL, HCG of <1 mIU/mL, and LDH of 463 IU/L. Eight weeks after surgery, AFP levels remained elevated at 11,646 ng/mL. Computed tomography (CT) scanning demonstrated left inguinal adenopathy, 1...
2016: Case Reports in Oncological Medicine
https://www.readbyqxmd.com/read/27822242/an-outbreak-of-yolk-sac-infection-and-dead-in-shell-mortality-in-common-canary-serinus-canaria-caused-by-klebsiella-pneumoniae
#17
J Razmyar, A H Zamani
Yolk sac infection (YSI) and dead-in-shell mortality caused by Enterobacteriaceae in birds are not a rare phenomenon, however there are only a few reports indicating the association between these conditions and Klebsiella spp. among canary chicks (Serinus canaria). There have been reports of high mortality among 1-3 day old canary chicks in an indoor flock of canaries. In order to study the causative agent, yolk sac samples from dead-in-shell and day-old canary chicks were cultured. Klebsiella pneumonia was isolated and identified based on biochemical tests and using genus and species-specific multiplex PCR and later tested for their susceptibility to 13 antimicrobial agents...
2016: Iranian journal of veterinary research
https://www.readbyqxmd.com/read/27821913/a-case-report-of-a-metastatic-yolk-sac-carcinoma-in-the-pulmonary-artery-of-a-young-female-sprague-dawley-rat
#18
Yohei Sakamoto, Takaharu Nagaoka, Kei Tamura, Hideshi Kaneko
Yolk sac carcinoma is an extremely rare tumor in rats and is usually found in the genital system of aged animals. We encountered a yolk sac carcinoma in the pulmonary artery of an 18-week-old female Sprague-Dawley rat. In a repeated dosing toxicity study (once weekly for 4 weeks, intraperitoneal), this rat was unexpectedly found dead on the 55th day after the final administration of the test article. At necropsy, grayish white nodules were found on the lung surface. Histopathologically, tumor emboli were observed in the trunk and branch of the pulmonary artery...
October 2016: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/27818263/brief-report-a-second-primary-endodermal-sinus-tumor-nine-years-after-initial-diagnosis
#19
Lea A Moukarzel, Kimberly Levinson, Francis C Grumbine
BACKGROUND: Ovarian yolk sac tumors (YST) are rare malignant germ cell tumors known to present unilaterally, allowing for fertility sparing surgical treatment with adjuvant chemotherapy. The few published cases of bilateral ovarian involvement were at the time of original diagnosis in patients with widely metastatic disease. We present this first case of bilateral ovarian YSTs, diagnosed several years apart, and discuss the implications on recurrence and tumor marker surveillance for these tumors...
November 3, 2016: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/27813385/pure-yolk-sac-presenting-with-inferior-vena-cava-thrombus-extending-from-bilateral-external-iliac-veins-to-hepatic-vein
#20
Oktay Ucer, Nalan Nese, Talha Muezzinoglu
INTRODUCTION: Vena cava thrombus is an extremely rare complication of testicular tumors. We report on an unusual case of testicular tumor presenting with inferior vena cava thrombus extending from the left spermatic and bilateral external iliac veins to the hepatic vein. CASE REPORT: A-35-year old man presented with a 6-month history of left scrotal mass and a 1-day history of bilateral lower extremity edema. Computed tomography (CT) revealed the presence of thrombus extending from the left spermatic vein and bilateral external iliac veins to the hepatic vein, and multiple lymph node and lung metastases...
November 2016: International Braz J Urol: Official Journal of the Brazilian Society of Urology
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