Junpei Yonemaru, Mami Takahashi, Satoshi Nara, Hitoshi Ichikawa, Rikako Ishigamori, Toshio Imai, Nobuyoshi Hiraoka
BACKGROUND: Yolk sac tumors (YSTs) of the pancreas are extremely rare, and no drug responsiveness data are available regarding YSTs. METHODS: We report a pancreatic YST in a 70-year-old woman, and its chemotherapeutic responsiveness based on clinical records and evaluation of a patient-derived xenograft (PDX) line of the YST. RESULTS: The YST was an 11-cm, solid mass located in the pancreatic tail. Histologically, the tumor showed medullary proliferation of tumor cells, with a variety of growth patterns including microcystic/reticular, endodermal sinus, and hepatoid patterns...
December 31, 2019: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
Hiroaki Tsunezuka, Terukazu Nakamura, Kei Fujikawa, Masanori Shimomura, Satoru Okada, Junichi Shimada, Satoshi Teramukai, Osamu Ukimura, Masayoshi Inoue
OBJECTIVES: To analyze predictors associated with viable cells in pulmonary residual lesions after chemotherapy for metastatic testicular nonseminomatous germ cell tumors and to develop models to prioritize pulmonary resection. METHODS: Between 2008 and 2017, 40 patients underwent pulmonary metastasectomy after chemotherapy for nonseminomatous germ cell tumors. We evaluated these patients, and 326 pulmonary residual lesions were confirmed using computed tomography and pathological evaluations...
January 8, 2020: International Journal of Urology: Official Journal of the Japanese Urological Association
Michael B Heskett, John Z Sanborn, Christopher Boniface, Benjamin Goode, Jocelyn Chapman, Karuna Garg, Joseph T Rabban, Charles Zaloudek, Stephen C Benz, Paul T Spellman, David A Solomon, Raymond J Cho
Immature teratoma is a subtype of malignant germ cell tumor of the ovary that occurs most commonly in the first three decades of life, frequently with bilateral ovarian disease. Despite being the second most common malignant germ cell tumor of the ovary, little is known about its genetic underpinnings. Here we performed multiregion whole-exome sequencing to interrogate the genetic zygosity, clonal relationship, DNA copy number, and mutational status of 52 pathologically distinct tumor components from ten females with ovarian immature teratomas, with bilateral tumors present in five cases and peritoneal dissemination in seven cases...
January 7, 2020: Modern Pathology
Ettore Stefanelli, Valentina Talarico, Maria Scavone, Elena Carboni, Giuseppe Stranieri, Maria Concetta Galati, Domenico Salerno, Giuseppe Raiola
Yolk sac tumor (YST) is a rare tumor that usually occurs in the first two decades of life. It is considered the second most common malignant germ cell tumor of the ovary, characterized by a rapid growth and a bad prognosis due to the frequent metastasis. We report the case of a 12-year-old girl who came to our observation for an acute abdominal pain. Clinical examination evidenced a vague mass in the suprapubic region and a lower abdomen tenderness, the US imaging revealed a complex lesion of the left ovary (19 x 13 cm) and the alpha-fetoprotein (AFP) resulted high (5858 ng/mL)...
December 23, 2019: Acta Bio-medica: Atenei Parmensis
Devendra Kumar Yadav, Samir Kant Acharya, Deepak Bagga, Vishesh Jain, Anjan Dhua, Prabudh Goel
Introduction: The study focuses on the clinical presentation, management, and outcomes (both short term and long term) in patients with sacrococcygeal teratoma managed over a decade in a tertiary care center. Materials and Methods: This is a prospective study on children with sacrococcygeal teratoma over 12 years data collected included antenatal diagnosis, mode of delivery, age at diagnosis, clinical presentation, physical extent of mass (including Altman classification), levels of alpha-fetoprotein, surgical approach, histopathology, clinical outcome, recurrence and long-term results including bladder-bowel dysfunction and neurological impairment...
January 2020: Journal of Indian Association of Pediatric Surgeons
Beijiao Qin, Wenyan Xu, Yanfang Li
OBJECTIVE: To determine the impact of lymphadenectomy (LND) on survival of clinically apparent early-stage malignant ovarian germ cell tumors (MOGCTs). METHODS: We retrospectively analyzed the survival of patients who were diagnosed with the three most common histopathology types of malignant ovarian germ cell tumors (yolk sac tumor, dysgerminoma and immature teratoma) and with clinical stage I and II disease, and treated at Sun Yat-sen University Cancer Center between 1 January 1970 and 30 September 2018...
March 9, 2020: Japanese Journal of Clinical Oncology
Eric S Pringle, Jaime Wertman, Nicole Melong, Andrew J Coombs, Andrew L Young, David O'Leary, Chansey Veinotte, Carolyn-Ann Robinson, Michael N Ha, Graham Dellaire, Todd E Druley, Craig McCormick, Jason N Berman
Kaposi's sarcoma associated-herpesvirus (KSHV, also known as human herpesvirus-8) is a gammaherpesvirus that establishes life-long infection in human B lymphocytes. KSHV infection is typically asymptomatic, but immunosuppression can predispose KSHV-infected individuals to primary effusion lymphoma (PEL); a malignancy driven by aberrant proliferation of latently infected B lymphocytes, and supported by pro-inflammatory cytokines and angiogenic factors produced by cells that succumb to lytic viral replication...
December 20, 2019: Viruses
Bryant J Van Leeuwen, Melissa M Bavitz, Shawna Boyle
Extragonadal germ cell tumors are germ cell tumors with no evidence of a primary tumor within the gonads, most often located in the mediastinum or retroperitoneum. We present an extragonadal yolk sac tumor that presented as an adrenal carcinoma and required left adrenalectomy, nephrectomy, and significant IVC thrombectomy. This case, to our knowledge, is the first documented case of extragonadal yolk sac tumor originating from the adrenal gland.
December 2019: Canadian Journal of Urology
Y X Ma, J W Liu, K Qi, J X Zhang, G Lin, H B Liu, X Q Shang, J Li
OBJECTIVE: Primary mediastinal yolk sac tumor, which is also known as endodermal sinus tumor, is a rare but lethal neoplasm and its prognosis is very dismal. The current treatment for this tumor is controversial, and chemotherapy combined with resection of residual lesions is adopted sometimes. We summarized the experience of seven primary mediastinal yolk sac tumors treated with platinum-based chemotherapy and extended resection in Peking University First Hospital. METHODS: Clinicopathological data of the patients with primary mediastinal yolk sac tumor who received operation in Peking University First Hospital between August 2014 and August 2018 were collected and analyzed retrospectively...
December 18, 2019: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
Rumeal D Whaley, Rachel E Dougherty, Liang Cheng, Thomas M Ulbright
CONTEXT.—: Gestational choriocarcinoma usually presents during the reproductive years, typically within 1 year of pregnancy, although presentation remote from pregnancy also occurs and may cause confusion with other tumors, including choriocarcinoma of germ cell origin and somatic carcinomas with choriocarcinomatous differentiation. It is important to separate these tumors for treatment and prognostic reasons. OBJECTIVE.—: To assess the utility of fluorescence in situ hybridization for the X and Y chromosome centromeres in determining the gestational origin of clinically ambiguous extrauterine choriocarcinomas in women...
December 17, 2019: Archives of Pathology & Laboratory Medicine
Xuan Zong, Jia-Xin Yang, Ying Zhang
BACKGROUND: Alpha-fetoprotein (AFP) plays a crucial role in the management of malignant ovarian germ cell tumors (MOGCTs) and is an important reference index for chemotherapy termination. However, a high level of AFP can also be caused by several benign diseases, causing confusion and impacting treatment decisions. CASE PRESENTATION: We described four patients who were diagnosed with MOGCTs; the histologic subtype in two of them was mixed MOGCTs (yolk sac tumor with mature teratoma), while the rest was immature teratoma...
December 13, 2019: Journal of Ovarian Research
Qianming Li, Jinghua Cao, Yajun He, Xiaohua Liu, Guanquan Mao, Bo Wei, Shiyan Liao, Qianqian Zhang, Jiangchao Li, Lingyun Zheng, Lijing Wang, Cuiling Qi
Breast cancer (BC) is one of the most common cancers among women in both developed and developing countries with a rising incidence. Using the MMTV-PyMT transgenic mouse model, we found that R5, a neutralizing antibody to Robo1, significantly inhibited BC growth and metastasis. Angiogenesis is involved in the growth and metastasis of BC. Interestingly, R5 significantly decreases microvessel density in BC tissues, and inhibits blood vessel formation and development in in vivo chick embryo chorioallantoic membrane (CAM), yolk sac membrane (YSM) and Matrigel plug models...
December 4, 2019: Experimental Cell Research
Linfeng Zhu, Guangjie Chen, Yiding Shen, Xiaohao Wang, Lei Gao, Yijun Zhao, Wei Ru, Danna Xu, Daxing Tang
Testicular tumors are uncommon in adults, accounting for <1% of all cancers, with testicular germ cell tumors (TGCTs) representing the majority (>95%) of reported cases. Adult and prepubertal TGCTs are fundamentally distinct and the latter is extremely rare, representing 1% of all pediatric solid tumors and having an annual incidence rate of 0.5-2/100,000 boys. Bilateral TGCTs (BTGCTs) account for 0.5-5% of all testicular tumors; the majority are metachronous, while the synchronous account for approximately 0...
October 2019: Translational Andrology and Urology
Alexandra Kalogeraki, Dimitrios Tamiolakis, Nikolaos Katzilakis, Iordanis Pelagiadis, Maria Raissaki, Eftichia Stiakaki
No abstract text is available yet for this article.
March 2020: Cytopathology: Official Journal of the British Society for Clinical Cytology
Dalia Y Ibrahim, Hongliu Sun
Testicular cancer represents 1% of all malignant tumors in men. About 95% of testicular cancers are germ cell tumors (GCTs). These can be divided into nonseminomatous GCTs (NSGCTs) and seminomas. NSGCTs include teratomas, yolk sac tumors, embryonal carcinomas, choriocarcinomas, and mixed tumors. Only 2-6% of testicular teratomas are pure teratomas. Pure teratomas can be subdivided into prepubertal and postpubertal. The prognosis is significantly different between these two age groups. Different from teratomas in ovary, the immaturity in a teratoma is not an indication of their biologic behavior; the age of the patient is of greater importance...
2019: Case Reports in Pathology
Jinna Zhang, Bing Zhang, Yanzhao Su, Sang Guo, Chaobin Liu, Jianxi Bai, Xi Xie
STUDY OBJECTIVE: This study characterizes the etiology, clinical features and outcomes of prepubescent vaginal bleeding and summarizes our experience. DESIGN: The data of patients who were hospitalized with vaginal discharge or bleeding treated from January 2012 to December 2018 were retrospectively reviewed. SETTING: A provincial Grade III Level A Maternity and Children's Hospital. PARTICIPANTS: Prepubertal patients with vaginal discharge or bleeding...
April 2020: Journal of Pediatric and Adolescent Gynecology
Shih-Wen Lin, Shu-Wei Hsieh, Shih-Hung Huang, Hung-Shuo Liang, Chia-Yen Huang
OBJECTIVE: To report a rare case of endometrial yolk sac tumor (YST) and review published cases of YST of the endometrium. CASE REPORT: A 68-year-old female presented with intermittent vaginal spotting for nine months. An endometrial biopsy showed adenocarcinoma. Complete surgical staging operation was performed and the final pathology revealed stage II endometrial yolk sac tumor. The post-operative α-fetoprotein (AFP) level was 133.4 ng/mL. Post-operative adjuvant chemotherapy with bleomycin, etoposide, and cisplatin (BEP) regimen was prescribed for 6 cycles...
November 2019: Taiwanese Journal of Obstetrics & Gynecology
Mauri José Piazza, Almir Antonio Urbanetz
This review describes the germ cell neoplasms that are malignant and most commonly associated with several types of gonadal dysgenesis. The most common neoplasm is gonadoblastoma, while others including dysgerminomas, yolk-sac tumors and teratomas are rare but can occur. The purpose of this review is to evaluate the incidences of these abnormalities and the circumstances surrounding these specific tumors.According to well-established methods, a PubMed systematic review was performed, to obtain relevant studies published in English and select those with the highest-quality data...
2019: Clinics
Giray Ergin, Burak Kopru, Turgay Ebiloglu, Mustafa Kirac, Yusuf Kibar, Ali Fuat Cicek, Hasan Biri
OBJECTIVE: Unusual intrascrotal lesions in adults generally have been described as case reports in the medical literature. We present two lesions observed in two clinics over more than 28 years, with their radiological, pathological and clinical characteristics. METHODS: Retrospective study preformed between 1989 and 2017 in 446 patients undergoing inguinal orchiectomy. Clinical data were obtained reviewing patient` s tables. All patients were evaluated with physical examination, medical history, serum tumor markers (alpha fetoprotein, beta human chorionic gonadotropin, LDH), and scrotal ultrasound in the perioperative period...
November 2019: Archivos Españoles de Urología
Zhenfeng Li, Zhaorui Lv, Qiang Yang, Jianmin Li
RATIONALE: Primary thoracic dumb-bell yolk sac tumor (YST) with both epidural and extraspinal extension is a rare disease with no standard curative managements yet. The objective of this study is to report a primary thoracic dumb-bell YST presenting with severe spinal cord compression successfully treated with posterior-only approach operation, followed by chemotherapy. The management of these unique cases has not been fully documented. PATIENT CONCERNS: A 26-mounth-old, previously healthy girl presented with progressive numbness and weakness of the lower extremities...
October 2019: Medicine (Baltimore)
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