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Yolk sac tumor

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https://www.readbyqxmd.com/read/28102527/teratoma-of-the-sellar-region-a-case-report
#1
Wolfgang Saeger, Azadeh Ebrahimi, Rudi Beschorner, Hildegard Spital, Jürgen Honegger, Waldemar Wilczak
The case report describes a teratoma of the sellar region with a gland forming and an immature, relatively clear undifferentiated component without signs of anaplasia. Both components express TTF-1 indicating their presumable origin in the neurohypophysis as part of the circumventricular organs. The differential diagnosis includes pituitary adenoma and spindle cell oncocytoma with inclusion of Rathke's cleft cyst, pituitary blastoma, yolk sac tumor, and other germ cell tumors. The prognosis is the same as in the immature teratomas in the gonads, specifically unclear...
January 19, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28070053/-a-case-report-for-primary-yolk-sac-tumor-of-endometrium
#2
Yuan Hu, Fei Zeng, Min Xue, Songshu Xiao
A case of primary yolk sac tumor of endometrium was retrospectively analyzed and relevant literature was systematically reviewed. We found that the primary yolk sac tumor of endometrium showed low incidence rate and was clinically characterized by abnormal vaginal bleeding, intrauterine lesions and significantly elevated alpha-fetoprotein (AFP) level. The final diagnosis should be confirmed by pathological examination. There is no guideline for the treatment of primary yolk sac tumor of endometrium due to its rareness...
December 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28058004/testicular-cancer-in-down-syndrome-with-spinal-cord-metastases
#3
Turky Almouhissen, Hattan Badr, Bassam AlMatrafi, Noor Alessa, Anmar Nassir
A 22-year-old male patient with Down syndrome was referred to our hospital with a vast left testicular mass. He underwent a left radical inguinal orchiectomy, and a histopathological examination of the mass showed a yolk sac tumor invading the epididymis. The patient was discharged in a satisfactory condition. Sixteen days later, the patient presented again complaining of lower limb weakness. Magnetic resonance imaging of the spine showed metastatic lesions compressing the dorsal spine, and he underwent emergency surgical decompression...
October 2016: Urology Annals
https://www.readbyqxmd.com/read/28039901/living-donor-liver-transplantation-in-a-pediatric-patient-with-preexisting-yolk-sac-tumor
#4
Taiichi Wakiya, Yoshikazu Toyoki, Keinosuke Ishido, Daisuke Kudo, Norihisa Kimura, Shinji Tsutsumi, Tadashi Odagiri, Akiko Suto, Chiaki Uchida, Kenichi Hakamada
There is ongoing discussion regarding the indications and timing of LT for patients with a preexisting extrahepatic malignancy. We herein report a pediatric case that underwent LDLT after therapy for YST. The patient, a 13-year-old female with biliary atresia, had undergone portoenterostomy at 2 months of age. She developed a left ovarian tumor with a high serum alpha-fetoprotein concentration at 10 years of age. She underwent left oophorectomy and was diagnosed with ovarian YST (Stage I). After surgery, hepatopulmonary syndrome progressed gradually...
December 30, 2016: Pediatric Transplantation
https://www.readbyqxmd.com/read/28013088/risk-of-malignant-childhood-germ-cell-tumors-in-relation-to-demographic-gestational-and-perinatal-characteristics
#5
Clinton Hall, Beate Ritz, Myles Cockburn, Tom B Davidson, Julia E Heck
BACKGROUND: Childhood germ cell tumors (GCTs) are a rare assortment of neoplasms, with mostly unknown etiology, that are believed to originate very early in life. Few studies have examined risk factors by histologic subtype, despite evidence of different risk profiles. MATERIALS AND METHODS: In this population-based case-control study, 451 childhood malignant GCT cases ages 0-5 years were identified from the California Cancer Registry. Differentiating between common histologic subtypes, we identified 181 yolk sac tumors, 216 teratomas, and 54 rarer subtypes...
December 22, 2016: Cancer Epidemiology
https://www.readbyqxmd.com/read/28003760/comparison-of-the-clinical-features-and-hematopoietic-stem-cell-transplantation-outcomes-of-mediastinal-malignant-germ-cell-tumors-with-nonmediastinal-extragonadal-placements
#6
Nesrin Ocal, Birol Yildiz, Nuri Karadurmus, Deniz Dogan, Sukru Ozaydin, Ramazan Ocal, Mustafa Ozturk, Fikret Arpaci, Hayati Bilgic
OBJECTIVE: Even though the primary mediastinal extragonadal germ cell tumors (EGCTs) are rare, they are noteworthy in the differential diagnosis of mediastinal masses. In this study, we aimed to identify the clinical features of mediastinal malignant GCTs and compare the results of hematopoietic stem cell transplantation between mediastinal and nonmediastinal malignant EGCTs. METHOD: Data of the patients with EGCT who were treated and underwent hematopoietic stem cell transplantation at our hospital between 1988 and 2015 were retrieved retrospectively...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28000905/teratomas-produced-from-human-pluripotent-stem-cells-xenografted-into-immunodeficient-mice-a-histopathology-atlas
#7
Ivan Damjanov, Peter W Andrews
This atlas illustrates the microscopic features of tumors produced from human pluripotent stem cells (hPSCs) xenografted into immunosuppressed mice, according to the generally accepted protocols for performing this teratoma assay of stem cell pluripotency. Microphotographs depict various hematoxylin and eosin (H&E) stained tissues derived from all three embryonic germ layers (ectoderm, mesoderm and endoderm). The appearance of persistent hPSC in teratomas is also described with special emphasis on the morphogenesis of embryoid bodies and yolk sac components surrounding them...
2016: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/27995468/alpha-fetoprotein-producing-esophageal-adenocarcinoma-a-mimicker-of-hepatocellular-carcinoma
#8
Jeremy Wang, Wendy Liu, Keyur Parikh, Anthony Benjamin Post
Alpha-fetoprotein (AFP)-producing esophageal adenocarcinoma (EAC) is a rare occurrence. Elevation of serum AFP is commonly associated with hepatocellular carcinoma and yolk sac tumors, but rarely with esophageal carcinoma. Here, we report a rare case of AFP-producing EAC. A 51-year-old man presented with two weeks of acid reflux and a 35-lb weight loss. Laboratory data were notable for transaminitis and AFP was 2524 ng/mL. Computed tomography of the abdomen revealed abnormal thickening of the esophagus and multiple metastatic masses throughout the liver...
December 19, 2016: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/27959583/unusual-presentations-of-gynecologic-tumors-extragonadal-yolk-sac-tumor-of-the-vulva
#9
Elizabeth D Euscher
Extragonadal germ cell tumors are uncommon, and although they morphologically resemble their gonadal counterparts, unexpected gonadal presentation increases the potential for erroneous diagnoses. Yolk sac tumor is a malignant germ cell tumor characterized by an extraembryonic yolk sac line of differentiation, and relative to other germ cell tumors, is characterized by varied and diverse histologic patterns. When occurring outside of typical age parameters or in extragonadal locations, the histologic variability of yolk sac tumor and its tendency to mimic somatic tumors pose diagnostic challenges...
December 13, 2016: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/27957372/nephroblastoma-arising-from-primary-testicular-germ-cell-tumor-a-case-report-and-literature-review
#10
Houda Alatassi, Brittany E O'Bryan, Jamie C Messer, Zhenglong Wang
Adult extrarenal nephroblastoma is a very rare tumor. Nephroblastoma arising from primary testicular germ cell tumor is exceedingly rare. To our knowledge, only three cases have been reported in the English literature. We report a case of a 19-year-old man who presented with a large right testicle. Image studies showed a large retroperitoneal mass along with liver and lung metastases. Orchiectomy demonstrated a mixed germ cell tumor composed of yolk sac tumor, embryonal carcinoma, and mature and immature teratoma with a significant portion of nephroblastoma...
2016: Case Reports in Pathology
https://www.readbyqxmd.com/read/27911225/successful-treatment-of-mixed-yolk-sac-tumor-and-mature-teratoma-in-the-spinal-cord-case-report
#11
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/27879325/cushing-syndrome-in-a-child-due-to-pro-opiomelanocortin-pomc-secretion-from-a-yolk-sac-tumor
#12
Evelien F Gevers, Suzanne Meredith, Pratik Shah, John Torpiano, Catherine Peters, Neil J Sebire, Olga Slater, Anne White, Mehul T Dattani
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...
February 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/27861143/intratumoral-heterogeneity-and-chemoresistance-in-nonseminomatous-germ-cell-tumor-of-the-testis
#13
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
#14
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...
December 2016: Journal of Surgical Oncology
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
#15
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-9%C3%A2-years-after-initial-diagnosis
#16
Lea A Moukarzel, Kimberly Levinson, Francis C Grumbine
BACKGROUND: Ovarian yolk sac tumors (YSTs) 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, to our knowledge, the first case of bilateral ovarian YSTs, diagnosed several years apart, and discuss the implications on recurrence and tumor marker surveillance for these tumors...
November 4, 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
#17
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
https://www.readbyqxmd.com/read/27803193/imprints-and-dppa3-are-bypassed-during-pluripotency-and-differentiation-coupled-methylation-reprogramming-in-testicular-germ-cell-tumors
#18
J Keith Killian, Lambert C J Dorssers, Britton Trabert, Ad J M Gillis, Michael B Cook, Yonghong Wang, Joshua J Waterfall, Holly Stevenson, William I Smith, Natalia Noyes, Parvathy Retnakumar, J Hans Stoop, J Wolter Oosterhuis, Paul S Meltzer, Katherine A McGlynn, Leendert H J Looijenga
Testicular germ cell tumors (TGCTs) share germline ancestry but diverge phenotypically and clinically as seminoma (SE) and nonseminoma (NSE), the latter including the pluripotent embryonal carcinoma (EC) and its differentiated derivatives, teratoma (TE), yolk sac tumor (YST), and choriocarcinoma. Epigenomes from TGCTs may illuminate reprogramming in both normal development and testicular tumorigenesis. Herein we investigate pure-histological forms of 130 TGCTs for conserved and subtype-specific DNA methylation, including analysis of relatedness to pluripotent stem cell (ESC, iPSC), primordial germ cell (PGC), and differentiated somatic references...
November 2016: Genome Research
https://www.readbyqxmd.com/read/27803008/the-role-of-staging-and-adjuvant-chemotherapy-in-stage-i-malignant-ovarian-germ-cell-tumors-mogts-the-mito-9-study
#19
G Mangili, C Sigismondi, D Lorusso, G Cormio, M Candiani, G Scarfone, F Mascilini, A Gadducci, A M Mosconi, P Scollo, C Cassani, S Pignata, G Ferrandina
BACKGROUND: Surgery followed by platinum-based chemotherapy is the standard of care for MOGCTs, except for stage IA dysgerminoma and stage IA grade 1 immature teratoma where surveillance only is recommended. The role of adjuvant chemotherapy and surgical staging is debated. PATIENTS AND METHODS: Data from 144 patients with stage I MOGTs were collected among MITO centers (Multicenter Italian Trials in Ovarian Cancer) and analysed. RESULTS: 55(38...
November 1, 2016: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/27778488/robot-assisted-laparoscopic-retroperitoneal-lymph-node-dissection-in-testicular-tumor
#20
Fabio C M Torricelli, Denis Jardim, Giuliano B Guglielmetti, Vipul Patel, Rafael F Coelho
INTRODUCTION AND OBJECTIVE: Retroperitoneal lymph node dissection (RPLND) is indicated for patients with non-seminoma¬tous germ cell tumor (NSGCT) with residual disease after chemotherapy. Although the gold standard approach is still the open surgery, few cases of robot-assisted laparoscopic RPLND have been described. Herein, we aim to present the surgical technique for robot-assisted laparoscopic RPLND. PATIENT AND METHOD: A 30 year-old asymptomatic man presented with left testicular swelling for 2 months...
October 25, 2016: International Braz J Urol: Official Journal of the Brazilian Society of Urology
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