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https://www.readbyqxmd.com/read/28719514/mature-ovarian-teratoma-after-treatment-for-unilateral-retinoblastoma-with-nonmutated-rb1
#1
Benjamin Collins, Seth J Corey
No abstract text is available yet for this article.
July 17, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28718952/facets-of-clinical-appearance-and-aetiology-in-an-unusual-bovine-amorphus-globosus
#2
J Weber, N Rudolph, M Freick
Amorphus globosus is a rare entity, more common in the cow but also reported in mares, buffaloes and goats. In respect of both development and clinical presentation, this abnormity can be evolved very variably. Previously, it has been discussed whether it is a form of twin pregnancy or placental teratoma. This case report deals with morphology and genetic observations in an unusual bovine amorphus globosus exhibiting a rudimentary clitoris and vulva, gut-like structures and rudimentary bones. The amorphus globosus was shown to be dizygotic to the normal male twin using the BovineSNP50 v2 BeadChip and had a genetical female sex...
July 18, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28714114/split-liver-transplantation-for-retroperitoneal-immature-teratoma-masquerading-as-hepatoblastoma
#3
Dongkyu Oh, Nam-Joon Yi, Sanghee Song, Ok Kyung Kim, Suk Kyun Hong, Kyung Chul Yoon, Sung Woo Ahn, Hyo-Sin Kim, Hyeyoung Kim, Hyun-Young Kim, Hyoung Jin Kang, Myungsu Lee, Kyoung Bun Lee, Kwang-Woong Lee, Kyung Suk Suh
Extragonadal teratoma originating from the retroperitoneum represents less than 5% of all teratomas and accounts for less than 10% of all pediatric retroperitoneal neoplasms. To date, there has been no report of teratoma managed with LT. This study reports an infant aged 3 months with retroperitoneal immature teratoma involving the hepatic hilum, refractory to chemotherapy and treated with LT. The patient was referred to our hospital for management of a growing abdominal mass. Histopathology of a fine needle biopsy of the lesion suggested the possibility of a hepatoblastoma with teratoid features...
July 16, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28713613/the-use-of-human-mature-cystic-ovarian-teratoma-as-a-model-to-study-the-development-of-human-lymphatics
#4
Rashid Al-Jomard, Zouhair Amarin
The angiogenic theory to the development of human lymphatics is not clear. The objective of this study was to investigate the development of human lymphatics. Semi-thin and thin paraffin sections from human mature cystic ovarian teratoma tissues were studied using light and electron microscopy. Lymphatics were formed by the differentiation of mesenchymal cells that gradually acquired morphological features of endothelial cells. It is suggested that in human mature cystic ovarian teratoma the lymphatic endothelium develops from mesenchymal cells, and not from cells derived from mature endothelium of a preexisting vein or lymphatic...
June 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28711530/pitfalls-of-a-neuroendoscopic-biopsy-of-intraventricular-germ-cell-tumors
#5
Yasuyuki Kinoshita, Fumiyuki Yamasaki, Atsushi Tominaga, Taiichi Saito, Tetsuhiko Sakoguchi, Takeshi Takayasu, Satoshi Usui, Kazuhiko Sugiyama, Kazunori Arita, Kaoru Kurisu
OBJECTIVE: A neuroendoscopic biopsy has become common for the diagnosis of ventricular tumors. However, its utility in patients with germ cell tumors (GCTs) has not been well discussed. We examined the usefulness and pitfalls of neuroendoscopic biopsies of intraventricular GCTs at a single institution. METHODS: We retrospectively studied 21 consecutive patients diagnosed with GCT by a neuroendoscopic biopsy of the ventricular region via the lateral ventricle. We examined the localization of tumors, histological diagnoses using biopsies, surgical complications, and consistency of the diagnosis at the latest follow-up...
July 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28710047/intradural-intramedullary-teratoma-presenting-in-the-lumbar-spine-report-of-a-rare-case
#6
Alireza Mohammadi, Taha Fereydouni, Ali Rahbari, Peyman Mokarian, Zoha Khademi
BACKGROUND: Intradural teratoma is an exceedingly unusual phenomenon. They are tumors with the cellular constituent source of all the three germ cell layers. CASE DESCRIPTION: We here report a case of an 18-year-old male with special pathological features. There was no history of spinal dysraphism, congenital spinal abnormalities, previous spinal surgery, or lumbar puncture. Lumbosacral spine magnetic resonance imaging revealed a well-delineated, intramedullary mass at the L2-L3 levels of the lumbar spine...
July 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28706371/growing-teratoma-syndrome-following-treatment-for-immature-teratoma-of-ovary-a-case-report-and-review-of-literature
#7
Leena Rose Johnson, Suchetha Sambasivan, Rema Prabhakaran Nair, Rari P Mony, Jiss Elizabeth Sebastian, Iqbal M Ahamed
No abstract text is available yet for this article.
August 2017: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/28706279/elimination-of-undifferentiated-human-embryonic-stem-cells-by-cardiac-glycosides
#8
Yu-Tsen Lin, Cheng-Kai Wang, Shang-Chih Yang, Shu-Ching Hsu, Hsuan Lin, Fang-Pei Chang, Tzu-Chien Kuo, Chia-Ning Shen, Po-Ming Chiang, Michael Hsiao, Frank Leigh Lu, Jean Lu
An important safety concern in the use of human pluripotent stem cells (hPSCs) is tumorigenic risk, because these cells can form teratomas after an in vivo injection at ectopic sites. Several thousands of undifferentiated hPSCs are sufficient to induce teratomas in a mouse model. Thus, it is critical to remove all residue-undifferentiated hPSCs that have teratoma potential before the clinical application of hPSC-derived cells. In this study, our data demonstrated the cytotoxic effects of cardiac glycosides, such as digoxin, lanatoside C, bufalin, and proscillaridin A, in human embryonic stem cells (hESCs)...
July 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28705066/primary-cystic-lesions-of-the-retrorectal-space-mri-evaluation-and-clinical-assessment
#9
Roy S Dwarkasing, Sylvia I Verschuuren, Geert J L H van Leenders, Loes M M Braun, Gabriel P Krestin, W Rudolph Schouten
OBJECTIVE: The purpose of this study was to assess the a priori chance that primary cystic lesions of the retrorectal space are malignant and to investigate MRI characteristics that indicate malignancy. MATERIALS AND METHODS: Patients referred to a center for colorectal surgery were recruited from 2000 to 2014. Lesions were proven by clinical assessment and histopathology. MRI was performed at 1.5 T with examinations evaluated by two radiologists. Interobserver agreement was assessed (Cohen kappa) and differences between malignant and benign lesions calculated (Fisher exact test)...
July 13, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28704926/a-label-free-and-ultrasensitive-immunosensor-for-detection-of-human-chorionic-gonadotrophin-based-on-graphene-fets
#10
Kamrul Islam, Ahmed Suhail, Genhua Pan
We report on a label-free immunosensor based on graphene field effect transistors (G-FETs) for the ultrasensitive detection of Human Chorionic Gonadotrophin (hCG), as an indicator of pregnancy and related disorders, such as actopic pregnancy, choriocarcinoma and orchic teratoma. Pyrene based bioactive ester was non-covalently anchored onto the graphene channel in order to retain the sp² lattice. The G-FET transfer characteristics showed repeatable and reliable responses in all surface modifying steps using a direct current (DC) readout system...
July 12, 2017: Biosensors
https://www.readbyqxmd.com/read/28700440/de-novo-tumors-of-teratoma-ganglioneuroma-arising-from-a-mature-cystic-teratoma-of-the-ovary
#11
Shannon Coy, Emily Meserve, Ross Berkowitz, Michelle S Hirsch
Mature teratomas are the most common ovarian neoplasms, accounting for 40% to 50% of ovarian tumors, and are histologically defined by the presence of multiple lineages of mature differentiated cells derived from one or more of the 3 embryonic germ layers; ectoderm, mesoderm, and endoderm. Neuroectodermal and neural crest differentiation can be observed in mature teratomas, but it is uncommon to find secondary tumors that arise from the neural crest lineage. Herein we report the uncommon finding of a ganglioneuroma arising in a mature cystic teratoma in a 26-yr-old woman...
July 11, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28700429/mucosal-proliferations-in-completely-examined-fallopian-tubes-accompanying-ovarian-low-grade-serous-tumors-neoplastic-precursor-lesions-or-normal-variants-of-benign-mucosa
#12
Rebecca J Wolsky, Matt A Price, Charles J Zaloudek, Joseph T Rabban
Malignant transformation of the fallopian tube mucosa, followed by exfoliation of malignant cells onto ovarian and/or peritoneal surfaces, has been implicated as the origin of most pelvic high-grade serous carcinoma. Whether a parallel pathway exists for pelvic low-grade serous tumors [ovarian serous borderline tumor (SBT) and low-grade serous carcinoma (LGSC)] remains to be fully elucidated. The literature is challenging to interpret due to variation in the diagnostic criteria and terminology for cytologically low-grade proliferations of the fallopian tube mucosa, as well as variation in fallopian tube specimen sampling...
July 11, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28698711/anti-n-methyl-d-aspartate-receptor-encephalitis-a-severe-potentially-reversible-autoimmune-encephalitis
#13
REVIEW
Cai-Yun Liu, Jie Zhu, Xiang-Yu Zheng, Chi Ma, Xu Wang
Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is potentially lethal, but it is also a treatable autoimmune disorder characterized by prominent psychiatric and neurologic symptoms. It is often accompanied with teratoma or other neoplasm, especially in female patients. Anti-NMDAR antibodies in cerebrospinal fluid (CSF) and serum are characteristic features of the disease, thereby suggesting a pathogenic role in the disease. Here, we summarize recent studies that have clearly documented that both clinical manifestations and the antibodies may contribute to early diagnosis and multidisciplinary care...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28698430/-extralobar-sequestration-difficult-to-establish-preoperative-diagnosis-report-of-a-case
#14
Michiru Sato, Satoshi Shiono, Katsuyuki Suzuki, Kei Yarimizu, Kazuki Hayasaka, Makoto Endo, Naoki Yanagawa
Pulmonary sequestration is a rare congenital pulmonary anomaly. Here we report a case of extralobar sequestration with calcification. A 34-year-old man was admitted to our department because of a tumor shadow on the chest radiological examination. Computed tomography examination revealed a mass measuring 5 cm above the left diaphragm. The mass contained cysts and calcification. Aberrant vessels were not detected. Teratoma, hamartoma or solitary fibrous tumor were suspected and the surgical treatment was performed...
July 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28698426/-seminoma-of-the-mediastinum-with-cystic-change-report-of-a-case
#15
Atsushi Kagimoto, Koichi Akayama, Satoshi Shibata
The patient was a 25-year-old man. He was diagnosed as having a mediastinal tumor based on chest radiography. Chest computed tomography and magnetic resonance imaging revealed a cystic tumor in the anterior mediastinum. Total resection of the tumor with median sternotomy was performed. We anticipated that the tumor was a thymic cyst or teratoma, but pathological findings indicated a seminoma. The patient was discharged without any complication, and no recurrence of the lesion has been observed for 8 years after surgery without adjuvant therapy...
July 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28695872/malignant-orbital-teratoma-in-a-neonate-a-clinicopathological-case-report
#16
M Vs Prakash, R Indira, M Radhakrishnan, G Leela
Teratoma of the orbit is rare; very few cases have been published in literature. A case of orbital teratoma in a neonate is presented where the proptosis was massive enough to obscure the eyeball. Clinically, the diagnosis of teratoma was considered. As there was no possibility of salvaging the eye, exenteration of the orbit was done. Orbital teratomas are generally benign. Histopathological examination revealed the features of malignant teratoma.
July 2017: Journal of Postgraduate Medicine
https://www.readbyqxmd.com/read/28695637/antenatal-management-of-fetal-intrapericardial-teratoma-a-systematic-review
#17
REVIEW
Ahmed A Nassr, Sherif A Shazly, Shaine A Morris, Nancy Ayres, Jimmy Espinoza, Hadi Erfani, Olutoyin A Olutoye, Sara K Sexson, Oluyinka O Olutoye, Charles D Fraser, Michael A Belfort, Alireza A Shamshirsaz
OBJECTIVES: The purpose of this systematic review is to provide a comprehensive overview on the clinical course, perinatal outcome and effectiveness of antenatal management options for pericardial teratoma. METHODS: A comprehensive search including Ovid MEDLINE, Ovid EMBASE, and Scopus was conducted from inception to September 2016. All studies that reported the antenatal course of pericardial teratoma in singleton or twin gestations were considered eligible Standardized forms were used for data abstraction by two independent reviewers...
July 10, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28695339/different-information-by-mri-compare-to-ultrasound-in-fetal-intracranial-space-occupying-lesions
#18
Wei Xia, Gregor Kasprian, Daoyu Hu, Peng Xiao, Wenzhong Yang, Xinlin Chen
PURPOSE: The purpose of this study was to evaluate the value of prenatal magnetic resonance imaging (MRI) in characterizing fetal intracranial space occupying lesions in comparison to prenatal ultrasound. METHODS: This retrospective study included 50 fetuses (mean age 26 years, mean gestational weeks 31 + 1 GW) with intracranial space occupying lesions, suspected by prenatal screening ultrasound. T2-weighted, T1-weighted, SSFP, and diffusion-weighted sequences of the fetal brain were obtained on a 1...
July 10, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28694004/late-incidental-diagnosis-of-intrapericardial-teratoma-a-case-report
#19
Annelisa Moura Garcia, Roberto Nery Dantas Junior, Chang Kai Chi, José Rodrigues Parga
We report a case of intrapericardial teratoma, which is a rare primary cardiac tumor usually found in newborns and infants. Cardiac teratomas can cause respiratory failure, large accumulations of pericardial fluid and cardiac compression leading to death in the intrauterine or neonatal period. The case described is rare because it is of a 16-year-old asymptomatic girl with an intrapericardial tumor as an incidental echocardiographic finding. Cardiac magnetic resonance imaging showed a complex pericardial cyst...
July 7, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/28692553/simultaneous-presentation-of-wilms-tumor-and-immature-ovarian-teratoma-in-beckwith-wiedemann-syndrome
#20
Jason C White, Jinglan Liu, Akash Nahar
The Beckwith-Wiedemann syndrome is a cancer predisposition syndrome characterized by a predilection to embryonal tumor growth, especially Wilms tumor, adrenocortical carcinomas, and hepatoblastomas. Genetic analysis of patients has revealed a link to the imprinted domain of the 11p15.5 chromosome and methylation status of the H19 locus and Igf-2. These genes have also been studied in other cancers, including ovarian teratomas. Our case is a patient with a simultaneous presentation of a Wilms tumor and immature ovarian teratoma and subsequently diagnosed with Beckwith-Wiedemann syndrome, which has not been previously described...
July 7, 2017: Journal of Pediatric Hematology/oncology
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