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ovarian teratoma

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https://www.readbyqxmd.com/read/28105559/mature-cystic-teratoma-of-the-ovary-a-cutting-edge-overview-on-imaging-features
#1
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/28071630/ovarian-tumors-in-children-10-year-experience-from-a-tertiary-care-center-in-south-india
#2
B Rajeswari, M Nair, A Ninan, K Parukuttyamma
BACKGROUND: Ovarian tumors are uncommon in childhood and constitute around 1% of childhood malignancies. Two thirds of pediatric ovarian tumors are germ cell tumors. Epithelial ovarian tumors and stromal tumors are less frequent. We share our experience in childhood ovarian cancers, analyzing a series of cases with respect to the clinical profile, treatment and survival. METHODS: All newly diagnosed ovarian tumors in children up to 14 years of age, registered in our Pediatric Oncology Division between January 2000 and December 2009 were retrospectively reviewed...
April 2016: Indian Journal of Cancer
https://www.readbyqxmd.com/read/28061867/lower-abdominal-gossypiboma-mimics-ovarian-teratoma-a-case-report-and-review-of-the-literature
#3
Hao Zhang, Yanyong Jiang, Qingqing Wang, Jun Liu
BACKGROUND: Gossypiboma is a serious and potentially dangerous medico-legal problem. CASE PRESENTATION: We present a case of lower abdominal gossypiboma that presented as an abdominal cystic mass mimicking ovarian teratoma. The mass and the adhesive intestine loop were en blocly resected. The cut section confirmed gossypiboma diagnosis. CONCLUSIONS: The present experience and related literature results indicate that gossypiboma should always be kept in mind for the differential diagnosis of cystic soft-tissue mass detected in patients with a prior operation history despite its rarity and diagnosis difficulty...
January 6, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28050596/an-ovarian-mature-cystic-teratoma-evolving-in-squamous-cell-carcinoma-a-case-report-and-review-of-the-literature
#4
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
#5
Masayuki Shintaku 新宅雅幸, 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
#6
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/28029275/oligodendroglial-cell-proliferation-arising-in-an-ovarian-mature-cystic-teratoma-clinicopathological-inmunohistochemical-and-ultrastructural-study-of-a-case-that-may-represent-an-oligodendroglioma
#7
Mónica Lizzette Serrano-Arévalo, Leonardo Saúl Lino-Silva, Hugo Ricardo Domínguez Malagón
Ovarian mature cystic teratoma (OMCT) is an ovarian benign neoplasm with excellent prognosis presenting components of the three germinal layers. However, transformation into a malignant neoplasm is a rare event (so-called somatic transformation). In most of the cases, the malignant component expresses as epidermoid carcinoma, but occasionally central nervous system tumors occur. Some of the previously reported tumors are astrocytoma, glioblastoma, and ependymoma. Somatic transformation of OMCT into an oligodendroglioma is exceptional...
December 28, 2016: Ultrastructural Pathology
https://www.readbyqxmd.com/read/28028390/spectrum-of-childhood-and-adolescent-ovarian-tumors-in-india-25-years-experience-at-a-single-institution
#8
Ruchi Rathore, Sonal Sharma, Deepshikha Arora
BACKGROUND: Ovarian tumour in children and adolescent girls form an uncommon but important part of gynaecological malignancies. They account for 1% of all the childhood malignancies and 8% of all abdominal tumours in children. Since the ovarian cysts are thought to arise from mature follicles, these tumours were considered to be infrequent in the paediatric population. AIM: The rarity of this condition prompted us to conduct this study and share our experience on the incidence and clinicopathological features of different ovarian tumours in girls up to 20 years of age observed in last 25 years at a single tertiary care hospital...
December 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28018806/management-of-familial-ovarian-teratoma-the-need-for-guidance
#9
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/28009311/-malignant-tumors-in-ovarian-mature-cystic-teratomas-intraoperative-diagnostic-basis
#10
A Khachatryan
Extremely rare ovarian primary tumors formed in a mature cystic teratomaare described in the literature. This research work studies the frequency of malignant mature cystic teratoma, as well as their clinical and morphological features and necessity of intraoperative histological examination of all teratomas. Cases histories of 56 patients, suffering from ovarian mature cystic teratomahave been studied in MC Shengavit in the period of 2003 - 2015. Among them 4 patients with the somatic malignancies were identified...
November 2016: Georgian Medical News
https://www.readbyqxmd.com/read/27987343/mature-cystic-teratoma-coexisting-with-clear-cell-carcinoma-in-the-ovary
#11
Koki Shimura, Mariko Matsumoto, Takuya Sugahara, Takuro Yamamoto, Nozomi Ogiso, Yoji Urata, Tomoharu Okubo
Mature cystic teratoma (MCT) is the most common benign ovarian tumor; clear-cell carcinoma (CCC) is a relatively common malignant ovarian tumor in Japan, but there are few reports on the coexistence of MCT and CCC. Here we report a case of simultaneous MCT and CCC in the ovary and review the relevant literature. The patient was a 49-year-old woman. A 5-cm MCT was found in the left ovary on initial gynecological examination, and she was referred to hospital for treatment because it was expanding. Magnetic resonance imaging showed a multilocular cystic tumor 16 × 10 × 9...
December 17, 2016: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/27941376/paraneoplastic-syndrome-with-anti-nmdar-encephalitis-associated-with-ovarian-teratomas
#12
Puskar Pattanayak, Lilja B Solnes
We report on a 33-year-old woman who had a paraneoplastic syndrome with anti-N-methyl-d-aspartate receptor encephalitis, associated with ovarian teratomas. She presented with acute onset seizures, grandiosity, elevated mood, disorganized thoughts, and paranoia. Cerebral spinal fluid analysis revealed anti-N-methyl-d-aspartate receptor antibodies. A PET/CT was requested, which identified a possible fat and calcification containing right adnexal lesion on the noncontrast CT portion, which was suspicious for a teratoma...
December 9, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27938333/pseudomyxoma-peritonei-of-a-mature-ovarian-teratoma-caused-by-mismatch-repair-deficiency-in-a-patient-with-lynch-syndrome-a-case-report
#13
Yoshimasa Gohda, Rei Noguchi, Tomoko Horie, Toru Igari, Harumi Nakamura, Yasunori Ohta, Kiyoshi Yamaguchi, Tsuneo Ikenoue, Seira Hatakeyama, Nozomi Yusa, Yoichi Furukawa, Hideaki Yano
BACKGROUND: Pseudomyxoma peritonei (PMP) is a rare disease with an estimated incidence of 1-2 cases per million individuals per year. PMP is characterized by the accumulation of abundant mucinous or gelatinous fluid derived from disseminated tumorous cells. Most of the tumorous cells are originated from rupture of appendiceal neoplasms, but some are from the metastasis of cancer of the colon, ovary, fallopian tube, urachus, colorectum, gallbladder, stomach, pancreas, lung and breast. Although frequent mutations in KRAS and/or GNAS genes have been reported, precise molecular mechanism underlying PMP remains to be elucidated...
December 9, 2016: BMC Medical Genetics
https://www.readbyqxmd.com/read/27935160/surgical-treatment-of-mature-cystic-teratomas-a-comparison-of-emergent-and-elective-surgeries
#14
Hadas Ganer Herman, Ron Sagiv, Hagit Raphaeli, Ram Kerner, Ran Keidar, Jacob Bar, Shimon Ginath
AIM: To compare patient characteristics, imaging and surgical management of mature cystic teratomas (MCTs) according to surgery type - elective versus emergent. METHODS: The study included surgeries performed between 1990 and 2016, during which histologically verified ovarian MCT material was obtained. The elective management group included surgeries performed at a pre-set date or incidental finding of MCT as part of a different surgery. Emergent surgeries were considered as such if performed as a result of suspected adnexal torsion...
December 9, 2016: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/27924086/an-ovarian-mature-cystic-teratoma-with-colon-involvement
#15
Dong Hoon Baek, Gwang Ha Kim, Geun Am Song
No abstract text is available yet for this article.
December 2016: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/27922872/18f-fluorodeoxyglucose-uptake-in-anti-n-methyl-d-aspartate-receptor-encephalitis-associated-with-an-immature-teratoma
#16
Ryusuke Nakamoto, Yuji Nakamoto, Takayoshi Ishimori, Yasutaka Fushimi, Kaori Togashi
We report a case of anti-N-methyl-D-aspartate-receptor (anti-NMDAR) encephalitis associated with an immature teratoma developed in a 38-year-old woman. Positron emission tomography (PET) revealed focal intense uptake of F-fluorodeoxyglucose in an area of the brain corresponding to the right medial temporal lobe as well as an intrapelvic tumor. After the PET examination, the patient complained of disorientation and short-term memory loss. The ovarian tumor was resected and diagnosed as an immature teratoma. The cerebrospinal fluid analysis was positive for anti-NMDAR antibody...
December 3, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27919713/primary-primitive-neuroectodermal-tumor-arising-from-an-ovarian-mature-cystic-teratoma-in-a-12-year-old-girl-a-case-report
#17
Ashley Jaramillo-Huff, Rania Bakkar, Jason Q McKee, Nancy Sokkary
BACKGROUND: Ovarian mature cystic teratomas (MCTs) rarely transform to primary primitive neuroectodermal tumors. This case report offers evidence that MCTs might have undetected microfoci of malignant neural tumors. CASE: We describe the case of a 12-year-old girl who presented with right-sided abdominal pain and distention. Intraoperative findings revealed a right ovarian MCT. However, pathology showed a 0.5-cm focus of malignant neural tumor within the 11-cm MCT...
December 2, 2016: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/27899309/repeated-misdiagnosis-of-a-relapsed-atypical-anti-nmda-receptor-encephalitis-without-an-associated-ovarian-teratoma
#18
Weihe Zhang, Li Yan, Jinsong Jiao
We present an atypical case of relapsed anti-NMDAR encephalitis in a young female patient without an associated ovarian teratoma. She presented with recurrent seizure attacks with muscle weakness, psychosis, dyskinesia, autonomic failure and insomnia. She was first misdiagnosed as mitochondrial encephalomyopathy with lactic acidosis and stroke-like episodes (MELAS) then Hashimoto's encephalopathy due to diffuse cerebral lesions, elevated serum lactic acid concentration, increased amount of thyroid peroxidase and thyroglobulin antibodies in serum and diffuse lesions of the thyroid gland...
January 18, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/27892434/clinicomorphological-spectrum-of-ovarian-cystic-lesions
#19
R Dhakal, R Makaju, R Bastakoti
Background Ovarian cysts, which present as neoplastic and non-neoplastic lesions, are the most common gynaecological cause of hospital admissions. Early diagnosis is difficult due to asymptomatic nature. Clinical, radiological and gross examination alone cannot distinguish benign from malignant lesions, hence, histopathological examination is important for diagnostic, therapeutic and prognostic approach. Objective The objective of the study is to analyze the spectrum of ovarian cystic lesions with their clinico-morphorgical features...
January 2016: Kathmandu University Medical Journal (KUMJ)
https://www.readbyqxmd.com/read/27882257/a-hormonally-active-malignant-struma-ovarii
#20
Carolina Lara, Dalia Cuenca, Latife Salame, Rafael Padilla-Longoria, Moisés Mercado
Struma ovarii is a rare monodermal variant of ovarian teratoma that contains at least 50% thyroid tissue. Less than 8% of struma ovarii cases present with clinical and biochemical evidence of thyrotoxicosis due to ectopic production of thyroid hormone and only 5% undergo malignant transformation into a papillary thyroid carcinoma. Only isolated cases of hormonally active papillary thyroid carcinoma developing within a struma ovarii have been reported in the literature. We report the case of a 36-year-old woman who presented with clinical signs and symptoms of hyperthyroidism as well as a left adnexal mass, which proved to be a thyroid hormone-producing, malignant struma ovarii...
2016: Case Reports in Oncological Medicine
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