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ovary teratoma

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https://www.readbyqxmd.com/read/28319573/vascular-smooth-muscle-cell-maturation-stage-and-ki-67-index-are-diagnostic-biomarkers-for-pathologic-grade-of-ovarian-teratoma
#1
Masako Hongo-Kohama, Atsushi Kurata, Hirotsugu Hashimoto, Koji Fujita, Hajime Horiuchi, Toshitaka Nagao, Masahiko Kuroda
Although immature teratoma of the ovary is a rare disease, its pathologic grading, especially between low-grade (grade 1) and high-grade (grade 2 or 3) immature teratomas, is important for optimal therapy and prognosis. This grading, however, is currently solely dependent on quantitation of neuroepithelial components as judged by subjective assessments. As we have recently successfully studied the maturation of vascular smooth muscle cells (SMCs) in other organs using an h-caldesmon to α-smooth muscle actin (α-SMA) ratio, we decided to use this ratio to investigate a potential link between teratoma grade and SMC maturation, in combination with Ki-67 index...
March 17, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28293443/ovarian-mature-and-immature-teratomas-in-monozygotic-twins-a-case-report-of-simultaneous-presentation
#2
Daisuke Shigemi, Naoki Kawai, Toshiyuki Takeshita
Mature cystic teratoma is one of the most common kinds of ovarian tumor, and immature teratoma is a rare tumor, representing less than 1% of all ovarian teratomas. Although there are some reports about familial occurrences of ovarian tumors, literature concerning the clinical cases of monozygotic twins is rare. We report the 5-year clinical courses of a 12-year-old Japanese girl with a recurrent bilateral ovarian mature teratoma and her monozygotic twin with a unilateral ovarian mature teratoma and contralateral ovarian immature teratoma...
2017: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28288660/evidence-of-metachronous-development-of-ovarian-teratomas-a-case-report-of-bilateral-mature-cystic-teratomas-of-the-ovaries-and-systematic-literature-review
#3
Wen-Chung Wang, Yen-Chein Lai
BACKGROUND: Mature cystic teratomas are usually found in the ovaries. They are bilateral in 10 to 15% of cases and multiple cystic teratomas may be present in one ovary. The aim of this study is to clarify if development of mature cystic teratomas of the ovaries in a single host is metachronous or due to autoimplant or recurrence. CASE PRESENTATION: We report a woman with bilateral mature cystic teratomas of the ovaries. DNA profiles of these teratomas were investigated via short tandem repeat (STR) analysis and methylation statuses were determined via methylation sensitive multiplex ligation-dependent probe amplification methods...
March 14, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28248120/sebaceous-adenoma-arising-in-mature-cystic-teratoma-of-the-ovary-case-report
#4
Kristýna Němejcová, Pavel Dundr, Jana Rosmusová, Inna Tučková
We report the case of a 44-year-old female with sebaceous adenoma arising in mature cystic teratoma of the ovary. The patient had a tumor in the left ovary; 125 x 90 x 70 mm. Microscopically, the tumor consisted of structures typical of dermoid cysts. However, large areas of sebaceous proliferation were found. These areas were comprised of sebaceous nodules with features similar to a sebaceous adenoma of the skin. Immunohistochemically, the tumor showed "wild-type" expression of p53 and low proliferative activity (Ki-67 index < 5%)...
2017: Ceskoslovenská Patologie
https://www.readbyqxmd.com/read/28208952/rare-site-of-parasitic-dermoid-cyst-at-uterovesical-fold-of-peritoneum-with-absent-one-sided-adnexa
#5
Sunita Dubey, Alka Sehgal, Puneeti Ballega, Rps Punia
Teratomas are the most common type of germ cell tumour. It can be congenital or acquired and are usually found in gonads (testes and ovaries). Parasitic dermoid cysts are rare and their actual incidence is unknown. We are reporting a case of 25-year-old gravida two, para one and one living child, who underwent emergency cesarean section in view of symptomatic placenta previa. A parasitic dermoid cyst was found incidently in front of uterus which was attached to uterovasical fold of bladder. This cyst did not show any connection to uterus or adnexa...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208869/mature-cystic-teratoma-with-co-existent-mucinous-cystadenocarcinoma-in-the-same-ovary-a-diagnostic-dilemma
#6
Sanjeet Roy, Sramana Mukhopadhayay, Mayank Gupta, Anuradha Chandramohan
Mature cystic teratoma co-existing with a mucinous cystadenocarcinoma is an infrequently encountered entity with only a handful of cases reported till date. The possibilities in such a case are either a malignant transformation of a benign teratoma into adenocarcinoma or a collision tumor between a mature cystic teratoma and a mucinous tumour of either a primary ovarian surface epithelial-stromal origin or a secondary from a primary gastrointestinal tract tumour. The importance of distinguishing between the two entities has significant bearing on subsequent therapeutic management...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28195108/mucoepidermoid-carcinoma-in-a-mature-cystic-teratoma-a-rare-case-report-with-review-of-literature
#7
REVIEW
Yasmin Altaf Momin, Medha Pradip Kulkarni, Amitkumar Bapuso Pandav, Kalpana Ranjitsingh Sulhyan
Mature cystic teratoma, also known as dermoid cyst, is the most common germ cell tumor of the ovary with a relative incidence of 20%. Rarely, dermoid cysts undergo malignant transformation (0.94%-2%). We report a case of mucoepidermoid carcinoma within a mature cystic teratoma in a 35-year-old female.
January 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28190856/virilism-and-ectopic-expression-of-hsd17b5-in-mature-cystic-teratoma
#8
Yohei Kawaguchi, Hiroko Mizuno, Mai Horikawa, Mayuko Kano, Kengo Yamada, Fumiko Yamakawa, Takashi Maekawa, Yuto Yamazaki, Keely M McNamara, Hironobu Sasano, Masayuki Hayashi
Mature cystic teratoma (MCT) is rarely involved in the overproduction of steroid hormones in contrast to sex cord stromal tumors. A 31-year-old woman visited our hospital with hirsutism, hoarseness, and hair loss from the scalp. Serum testosterone and free-testosterone levels were 7.3 ng/ml and 2.3 pg/ml, respectively, which were markedly in excess of the age adjusted female standard levels. Basal blood levels of steroid hormones and serum levels of 17-hydroxyprogesterone at 1 h after intravenous injection of adrenocorticotropic hormone demonstrated that 21-hydroxylase deficiency was not the underlying cause of her virilization...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28154283/postpartum-anti-n-methyl-d-aspartate-receptor-encephalitis-a-case-report-and-literature-review
#9
REVIEW
Tadashi Doden, Yoshiki Sekijima, Junji Ikeda, Kazuki Ozawa, Nobuhiko Ohashi, Minori Kodaira, Akiyo Hineno, Naoko Tachibana, Shu-Ichi Ikeda
We describe a 24-year-old woman with anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis that developed 3 weeks after normal delivery. She was treated with methylprednisolone, intravenous immunoglobulin, and plasmapheresis, in addition to teratoma excision. However, her recovery was slow, and dysmnesia and mental juvenility persisted even two years after onset. To date, five patients with postpartum anti-NMDAR encephalitis have been reported. All of those patients showed psychotic symptoms and were suspected of having postpartum psychosis in the early period of the encephalitis...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28150403/anti-n-methyl-d-aspartate-receptor-limbic-encephalitis-associated-with-mature-cystic-teratoma-of-the-fallopian-tube
#10
Yukio Hattori, Yoriko Yamashita, Masayuki Mizuno, Kinue Katano, Mayumi Sugiura-Ogasawara, Noriyuki Matsukawa
Anti-N-methyl-d-aspartate receptor (NMDAR) limbic encephalitis is the most common form of paraneoplastic encephalitis that is associated with teratomas. Because tumor removal leads to better clinical outcomes, it is essential to reveal the location of the teratomas. This is the first reported case of anti-NMDAR encephalitis associated with teratoma of the fallopian tube. Salpingo-oophorectomy improved neurological symptoms and immunohistochemical examinations indicated the expression of NMDAR on neuroglial cells within the fallopian tube teratoma...
February 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28141943/histological-detection-of-schistosoma-mansoni-infection-in-a-mature-cystic-teratoma-of-the-ovary
#11
Ibrahim Alsharaydeh, Chee K Thum, Jennifer Crane, Kirsty I Munro, Holger W Unger
No abstract text is available yet for this article.
January 31, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28135773/epidemiological-study-of-paediatric-germ-cell-tumours-revealed-the-incidence-and-distribution-that-was-expected-but-a-low-mortality-rate
#12
Madeline Evers, Catherine Rechnitzer, Niels Graem, Peder Skov Wehner, Henrik Schroeder, Steen Rosthoej, Christiane Hammershaimb Mosbech, Christina Engel Hoei-Hansen, Astrid Sehested, Taryn D Treger, Jesper Brok
AIM: Germ cell tumours (GCTs) are a rare heterogeneous tumour group derived from primordial germ cells, which can be benign or malignant and occur in the gonads or extragonadally. This study mapped the paediatric GCTs in Denmark from 1984-2013 to study the incidence and outcome. METHODS: We identified paediatric GCTs from the Danish Childhood Cancer and National Pathology Registries and reviewed the case records for patient characteristics, tumour characteristics and clinical outcome...
January 30, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28130795/clinical-morphological-and-immunohistochemical-evidence-that-small-cell-carcinoma-of-the-ovary-of-hypercalcaemic-type-sccoht-may-be-a-primitive-germ-cell-neoplasm
#13
W Glenn McCluggage, Leora Witkowski, Blaise A Clarke, William D Foulkes
AIMS: The histogenesis and cell lineage of small cell carcinoma of the ovary of hypercalcaemic type (SCCOHT) is unknown. We aim to provide evidence that this may be a primitive germ cell neoplasm arising from a teratoma. METHODS/ RESULTS: Following the identification of two cases of SCCOHT associated with germ cell tumours (one dermoid cyst, one immature teratoma with a focus of yolk sac tumour), we undertook a literature review to look for any prior reports of SCCOHT in association with other neoplasms or elements...
January 28, 2017: Histopathology
https://www.readbyqxmd.com/read/28105559/mature-cystic-teratoma-of-the-ovary-a-cutting-edge-overview-on-imaging-features
#14
REVIEW
Hilal Sahin, Samir Abdullazade, Muzaffer Sanci
Mature cystic teratoma (MCT) is the most common neoplasm of the ovary and includes at least two well- differentiated germ cell layers. Different combinations of mature tissue derivatives with varying arrangements in the tumour cause a wide spectrum of radiological presentation ranging from a purely cystic mass to a complex cystic mass with a considerable solid component. In different imaging modalities, each radiological feature reflects a specific pathologic equivalent that forms because of diverse compositions of histological components...
January 19, 2017: Insights Into Imaging
https://www.readbyqxmd.com/read/28050596/an-ovarian-mature-cystic-teratoma-evolving-in-squamous-cell-carcinoma-a-case-report-and-review-of-the-literature
#15
REVIEW
C Goudeli, A Varytimiadi, N Koufopoulos, J Syrios, E Terzakis
Mature cystic teratomas (MCT), also known as dermoid cysts, are the most common ovarian germ cell tumors and the most common ovarian neoplasms in patients younger than 20 years. Malignant transformation (MT) is a rare complication of MCTs which may occur in 1-2% of the cases. Squamous cell carcinoma (SCC) is the most frequent histology arising from MCTs and its appearance depends on diverse risk factors such as patient's age, the size of the tumor and levels of serum tumor markers. Diagnosis and treatment constitute a big challenge due to the rarity and the aggressive course of this entity...
February 2017: Gynecologic Oncology Reports
https://www.readbyqxmd.com/read/28042664/well-formed-cerebellum-and-brainstem-like-structures-in-a-mature-ovarian-teratoma-neuropathological-observations
#16
Masayuki Shintaku, Toshiko Sakuma, Chiho Ohbayashi, Motoyoshi Maruo
In the surgical case of a mature cystic teratoma of the ovary that arose in a 16-year-old girl, a large amount of well-differentiated and highly organized cerebellar tissue was found. Three layers of the cerebellar cortex were well formed, and synaptophysin-positive "glomeruli" were found in the granule cell layer. Some Purkinje cells exhibited focal expansion and a dysmorphic appearance of the dendrites. Adjacent to the cerebellar tissue, a large space lined by the ependymal layer and a club-shaped CNS tissue mass resembling the brainstem were found, and structures reminiscent of the midbrain tectum and pontine nuclei were distinguished within this mass...
January 2, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28040316/ovarian-teratoma-development-after-anti-nmda-receptor-encephalitis-treatment
#17
Taku Omata, Kazuo Kodama, Yoshimi Watanabe, Yukiko Iida, Yoshiaki Furusawa, Akiko Takashima, Yukitoshi Takahashi, Hiroshi Sakuma, Keiko Tanaka, Katsunori Fujii, Naoki Shimojo
BACKGROUND: Anti-NMDA-R receptor encephalitis occurs predominantly in younger women and is often comorbid with ovarian teratoma, a feature that is often absent in children. Here, we report our experience with two pediatric patients, in whom no tumors were present during treatment for encephalitis, but in whom ovarian teratomas developed without encephalitis relapse after treatment was completed. CASES: Patient 1 was a 14-year-old girl who was diagnosed due to characteristic symptoms and anti-NMDA-R antibody...
December 28, 2016: Brain & Development
https://www.readbyqxmd.com/read/28018955/wilms-tumor-of-the-ovary
#18
Vinita M Alexander, Jane Meisel, Shannon O'Brien, Namita Khanna
Extrarenal Wilms' tumor of the ovary is a very rare tumor likely derived from embryonic mesonephros. We present the first reported case of a teratoid extrarenal Wilms' tumor of the ovary with a short review of the existing literature. In the case, a 26-year-old woman presented with back pain and was found to have a dermoid cyst; three years later, she presented again, now pregnant, with severe abdominal pain. She was diagnosed with an immature teratoma consisting of a Wilms' tumor (immature component) arising within a mature teratoma and treated exclusively with surgery and surveillance...
February 2017: Gynecologic Oncology Reports
https://www.readbyqxmd.com/read/28018806/management-of-familial-ovarian-teratoma-the-need-for-guidance
#19
Sarah Braungart, Majella McCullagh
Ovarian teratomas in prepubertal females are uncommon, but familial ones are exceedingly rare. We report an ovarian teratoma in an 8-year-old girl, her mother, and her maternal grandmother. The risk of a metachronous tumor and subsequent complications (such as torsion) in the contralateral ovary remain unclear. There is no clear guidance on follow-up management of patient and family members in the literature. We have reviewed the literature and discuss the challenges for the pediatric surgeon arising from such cases...
December 2016: European Journal of Pediatric Surgery Reports
https://www.readbyqxmd.com/read/28017339/malignant-oestrogen-producing-teratoma-in-a-cat
#20
Y Machida, M Michishita, M Wada, T Hori, E Kawakami, H Yoshimura, K Ohkusu-Tsukada, K Taya, K Takahashi
A 5-year-old female domestic shorthair cat was presented with abdominal distension and serum biochemical evaluation indicated a high concentration of oestradiol (32.81 pg/ml). Exploratory laparotomy revealed a large cystic mass in the right ovary with cystic fluid containing a high level of oestradiol (18.80 pg/ml). The tumour was composed of immature neuroectodermal tissue, mature cartilage, smooth muscle, adipose tissue and aggregated, poorly differentiated mesenchymal cells. It contained cysts of various sizes that were lined by epithelium of different types...
December 22, 2016: Journal of Comparative Pathology
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