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https://www.readbyqxmd.com/read/28719904/gonadectomy-in-complete-androgen-insensitivity-syndrome-why-and-when
#1
Ulla Döhnert, Lutz Wünsch, Olaf Hiort
Prophylactic gonadectomy has been recommended in complete androgen insensitivity syndrome (CAIS) because of an increased risk for the development of malignant germ cell tumors in the intra-abdominal gonads. No reliable screening parameters are available to detect early (pre-)malignant changes. Because the tumor risk before puberty is very low, the timing of gonadectomy has been postponed to allow spontaneous puberty and involvement of the patients in important decisions affecting their body and health. Gonadectomy after puberty is still discussed controversially...
July 19, 2017: Sexual Development: Genetics, Molecular Biology, Evolution, Endocrinology, Embryology, and Pathology of Sex Determination and Differentiation
https://www.readbyqxmd.com/read/28719895/update-on-the-pathophysiology-and-risk-factors-for-the-development-of-malignant-testicular-germ-cell-tumors-in-complete-androgen-insensitivity-syndrome
#2
Martine Cools, Leendert Looijenga
Prophylactic gonadectomy in young adult women with complete androgen insensitivity syndrome (CAIS) to avoid development of an invasive testicular germ cell tumor (TGCT) is currently advised in most centers. However, women with CAIS increasingly question the need of this procedure. In order to provide optimal counseling and follow-up of these women, insight in the mechanisms underlying TGCT development in androgen insensitivity syndrome (AIS), data regarding the incidence of TGCT in AIS adults specifically, and an overview of existing and novel screening tools for in situ and invasive neoplastic lesions are crucial...
July 19, 2017: Sexual Development: Genetics, Molecular Biology, Evolution, Endocrinology, Embryology, and Pathology of Sex Determination and Differentiation
https://www.readbyqxmd.com/read/28719464/nuclear-crx-and-foxj1-expression-differentiates-non-germ-cell-pineal-region-tumors-and-supports-the-ependymal-differentiation-of-papillary-tumor-of-the-pineal-region
#3
Shannon Coy, Adrian M Dubuc, Sonika Dahiya, Keith L Ligon, Alexandre Vasiljevic, Sandro Santagata
Papillary tumor of the pineal region (PTPR) is a neuroepithelial neoplasm first described in 2003. Despite the anatomic association of PTPR with the pineal gland, the features of these tumors resemble those of the ependymal circumventricular subcommissural organ (SCO) of the posterior third ventricle. Given the presumed distinct derivation of PTPR and pineal parenchymal tumors, we hypothesized that expression of lineage-specific transcription factors could distinguish these tumors and provide additional insight into the differentiation of PTPR...
July 17, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28719463/do-nonseminomatous-germ-cell-tumors-of-the-testis-with-lymphovascular-invasion-of-the-spermatic-cord-merit-staging-as-pt3
#4
Jennifer Gordetsky, Joseph Sanfrancesco, Jonathan I Epstein, Karen Trevino, Huiping Xu, Adeboye Osunkoya, Guang Q Xiao, Chia-Sui Kao, Pamela Unger, Neda Hashemi-Sadraei, Constantine Albany, Julie M Jorns, David Y Lu, Andres Matoso, Soroush Rais-Bahrami, Lauren E Schwartz, Thomas M Ulbright, Muhammad T Idrees
The staging of testicular nonseminomatous germ cell tumors (NSGCTs) with lymphovascular invasion (LVI) of the spermatic cord in the absence of cord parenchymal involvement remains controversial. Our previous study showed that tumors with spermatic cord LVI present at a higher clinical stage than tumors with LVI confined to the testis (pT2). We compared NSGCTs with LVI of the spermatic cord without direct involvement of the spermatic cord soft tissues to pT3 tumors to help clarify the appropriate staging of this histologic finding...
July 17, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28717551/angiomyolipoma-of-the-scrotum-report-of-a-rarely-seen-case-and-review-of-the-literature
#5
Gauhar Sultan, Bilal Masood, Harris Qureshi, Muhammed Mubarak
Angiomyolipoma (AML) is a benign, histologically complex mesenchymal tumor arising mainly from the kidney and liver. The majority (80%) of these tumors arise as sporadic tumors, while 20% of them are associated with tuberous sclerosis. Extra-renal sites of AML, though rare, have been reported in literature. In this report, we describe a case of AML arising from the scrotal skin, and presenting as a scrotal mass. Although skin is the most commonly reported site after kidney and liver, scrotal skin AML presents as an intriguing mass in a region known for germ cell tumors which has been reported only once before...
June 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28715257/association-between-testicular-microlithiasis-and-testicular-neoplasia-large-multicenter-study-in-a-pediatric-population
#6
Andrew T Trout, Jeanne Chow, Erin R McNamara, Kassa Darge, Raul Ramirez Grueso, Marthe Munden, Sarah M Rothan, Oscar M Navarro, Marta Tijerín Bueno, Kevin E Bove, Kudakwashe R Chikwava, Amer Heider, M John Hicks, Gino R Somers, Bin Zhang, Jonathan R Dillman
Purpose To retrospectively define the strength of association between testicular microlithiasis and testicular neoplasia in a large geographically diverse pediatric population. Materials and Methods Retrospective review of scrotal ultrasonographic (US) examination reports and pathology specimens obtained between January 2000 and May 2014 at six academic pediatric hospitals in North America was performed. Reported cases were reviewed to confirm microlithiasis. Radiology and pathology data bases were searched for pathology-proven testicular tumors (benign or malignant germ cell or stromal tumors)...
July 17, 2017: Radiology
https://www.readbyqxmd.com/read/28713970/human-chorionic-gonadotropin%C3%A2-%C3%AE-regulates-epithelial-mesenchymal-transition-and-metastasis-in-human-ovarian-cancer
#7
Na Liu, Shu-Min Peng, Guang-Xi Zhan, Jing Yu, Wei-Min Wu, Hao Gao, Xiao-Feng Li, Xiao-Qing Guo
Human chorionic gonadotropin β (β-hCG) is a well-known and accurate marker for the diagnosis and monitoring of pregnancy, trophoblastic tumors and ovarian germ cell tumors. Recently, β-hCG has been found to be closely related to poor prognosis and metastasis in various other malignant tumors, while its role and mechanism in ovarian cancer is still unclear. In the present study, lentiviral‑mediated transfection and small interfering RNA (siRNA) were used to alter β-hCG expression in the ovarian cancer cell lines ES-2 and SKOV3, respectively...
July 14, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28712904/pitfalls-in-diagnosis-and-management-of-testicular-choriocarcinoma-metastatic-to-the-brain-report-of-two-cases-and-review-of-literature
#8
REVIEW
Haydn Hoffman, Gentian Toshkezi, Joseph M Fullmer, Walter Hall, Lawrence S Chin
INTRODUCTION: Pure choriocarcinoma of the testes is a rare, aggressive germ cell tumor (GCT) that can metastasize to the brain. Although its prognosis has improved with the development of cisplatin-based chemotherapy regimens, cerebral metastases are prone to hemorrhage and are associated with high morbidity. Here, we present two cases of testicular choriocarcinoma with cerebral metastasis and discuss potential pitfalls in their diagnosis and management. We also review cases in the literature that feature these rare lesions...
July 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28711530/pitfalls-of-a-neuroendoscopic-biopsy-of-intraventricular-germ-cell-tumors
#9
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
#10
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/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/28699894/cancer-testis-antigen-piwil2-suppresses-circadian-rhythms-by-regulating-the-stability-and-activity-of-bmal1-and-clock
#12
Yilu Lu, Xulei Zheng, Wei Hu, Shasha Bian, Zhiwei Zhang, Dachang Tao, Yunqiang Liu, Yongxin Ma
Circadian rhythms are regulated by transcriptional and post-translational feedback loops generated by appropriate functions of clock proteins. Rhythmic degradation of the circadian clock proteins is critical for maintenance of the circadian oscillations. Notably, circadian clock does not work during spermatogenesis and can be disrupted in tumors. However, the underlying mechanism that suppresses circadian rhythms in germ cells and cancer cells remains largely unknown. Here we report that the cancer/testis antigen PIWIL2 can repress circadian rhythms both in the testis and cancer cells...
July 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28696846/distinctive-features-of-testicular-neoplasms-seminoma-versus-mixed-germ-cell-tumor
#13
Aletta Ann Frazier
No abstract text is available yet for this article.
July 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28695992/optimal-radiotherapy-target-volumes-in-intracranial-nongerminomatous-germ-cell-tumors-long-term-institutional-experience-with-chemotherapy-surgery-and-dose-and-field-adapted-radiotherapy
#14
William G Breen, Miran J Blanchard, Amulya Nageswara Rao, David J Daniels, Jan C Buckner, Nadia N Issa Laack
PURPOSE: To evaluate patterns of failure after multimodality treatment of nongerminomatous germ cell tumors (NGGCTs). MATERIALS AND METHODS: We retrospectively reviewed records of 3,440 patients diagnosed with primary intracranial NGGCT between 1988 and 2014. RESULTS: Thirty-four patients received induction chemotherapy followed by radiation with or without surgery. Median follow-up was 11.1 years (0.8-23.3). Outcomes were significantly improved in these 34 patients (5-year overall survival [OS]: 88% versus 50%, P = 0...
July 11, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28694581/leydig-cell-tumor-of-testis-in-a-child-an-uncommon-presentation
#15
Madhumita Mukhopadhyay, Chhanda Das, Sucharita Sarkar, Biswanath Mukhopadhyay, Bedabrata Mukhopadhyay, Rishavdeb Patra
Leydig cell tumors (LCTs) are rare testicular tumors. Incidence is 1%-3% of all testicular neoplasms, bilateral in 10%. They are frequently hormonally active, leading to feminizing or virilizing syndromes. LCTs can be either pure or mixed with germ cell tumors or other sex cord-stromal tumors. Here, we are reporting a benign pure LCT in a 6-year-old boy presented with pseudopuberty.
July 2017: Journal of Indian Association of Pediatric Surgeons
https://www.readbyqxmd.com/read/28693284/%C3%AE-human-chorionic-gonadotropin-secreting-intracranial-germ-cell-tumor-associated-with-high-testosterone-in-an-adult-man-a-case-report
#16
Wen-Ping Yang, Hung-Yu Chien, Yi-Chun Lin
A 38-year-old male patient presented with general weakness, polydipsia and a body weight loss of 10 kg in two years. Hypopituitarism with central hypothyroidism and central adrenal insufficiency were noted at Taipei City Hospital (Taipei, Taiwan). However, hypogonadotropic hypergonadism was also observed. The patient was diagnosed with an intracranial β-human chorionic gonadotropin (β-hCG) secreting germ-cell tumor, and brain magnetic resonance imaging revealed that the tumor involved the pineal gland, stalk, posterior pituitary gland, right basal ganglion, hypothalamus, corpus callosum and posterior hippocampus...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28693262/axin1-protects-against-testicular-germ-cell-tumors-via-the-pi3k-akt-mtor-signaling-pathway
#17
Hailiang Xu, Yunyun Feng, Zhankui Jia, Jinjian Yang, Xueren Lu, Jun Li, Mingliang Xia, Chunru Wu, Yonggang Zhang, Jianhua Chen
Axis inhibition protein 1 (AXIN1) is characterized as a tumor suppressor in numerous types of cancer. However, the functional role of AXIN1 in the testicular germ cell tumors (TGCTs) remains unclear. The human embryonal carcinoma-derived cell line NTera2 was transfected with a recombinant AXIN1 expression vector (pcDNA3.1-AXIN1) and/or a small interfering RNA (siRNA) directed against AXIN1 (siAXIN). Following transfection, the mRNA and protein levels of AXIN1 were determined via reverse transcription-quantitative polymerase chain reaction analysis and western blotting, respectively...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28690152/decreased-expression-of-orexin-1-receptor-in-adult-mice-testes-during-alloxan-induced-diabetes-mellitus-perturbs-testicular-steroidogenesis-and-glucose-homeostasis
#18
Deepanshu Joshi, Debarshi Sarkar, Shio Kumar Singh
Diabetes mellitus (DM) affects male reproductive system and causes infertility. The male reproductive health is largely dependent upon uptake and proper utilization of glucose by testicular cells. Results show involvement of orexin A (OXA) and its receptor (OX1R) in regulation of steroidogenesis and glucose homeostasis in adult mice testis. However, the role of OX1R in regulation of testicular functions during hyperglycemia has not been investigated so far. The present study, therefore, examined the role of OX1R in regulation of steroidogenesis and glucose homeostasis in testis of adult mice during alloxan-induced type 1 DM...
July 6, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28687143/contemporary-treatment-patterns-and-outcomes-for-clinical-stage-is-testicular-cancer
#19
Sophia C Kamran, Thomas Seisen, Sarah C Markt, Mark A Preston, Quoc-Dien Trinh, Lindsay A Frazier, Toni K Choueiri, Neil E Martin, Paul L Nguyen, Clair J Beard
BACKGROUND: Controversy exists regarding the optimal management strategy for clinical stage IS seminomatous (SGCT) and nonseminomatous germ cell tumors (NSGCT) of the testis. OBJECTIVE: To assess contemporary treatment patterns and outcomes for clinical stage IS testicular cancer. DESIGN, SETTING, AND PARTICIPANTS: Using the National Cancer Data Base (2004-2012), we identified 1362 patients with clinical stage IS SGCT and NSGCT of the testis, treated with either adjuvant treatment (AT) or observation...
July 4, 2017: European Urology
https://www.readbyqxmd.com/read/28685300/hepatoduodenal-ligament-teratoma-with-immature-elements
#20
Ana C De Roo, Sabina Siddiqui, George B Mychaliska
Pediatric germ cell tumors comprise 1-3% of all malignant pediatric tumors and are found in variable locations. We present the case of a term 3.7 kg neonate who was found to have a giant liver mass at birth, later determined to be an immature teratoma arising from the hepatoduodenal ligament. This case report and images add to the limited literature a very rare presentation of a teratoma.
July 6, 2017: Pediatric Surgery International
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