3,157 results match your criteria Teratoma Cystic

Ovarian clear cell carcinoma with an immature teratoma component showing ARID1A deficiency and an identical PIK3CA mutation.

J Obstet Gynaecol Res 2021 Jun 9. Epub 2021 Jun 9.

Department of Pathology, Jichi Medical University, Tochigi, Japan.

We herein report a case of ovarian clear cell carcinoma with an immature teratoma component that exhibited aggressive behavior. A 47-year-old woman presented with abdominal distention, and computed tomography detected a cystic mass on the right ovary. The resected mass had mural nodules, most of which showed a pale-yellow appearance; some nodules had a heterogeneous cut surface with bright yellow and white areas. Read More

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Incidental finding of an adult intracardiac teratoma.

J Card Surg 2021 Jun 6. Epub 2021 Jun 6.

Department of Cardiac Surgery, Lanzhou University Second Hospital, Lanzhou University, Lanzhou, China.

We reported an exceedingly rare adult case of intracardiac teratoma with a bicuspid aortic valve. A small mass was discovered in the right ventricle of a 37-year-old man by accident after he was referred to our hospital due to chronic chest distress and aggravated palpitation. We performed a surgical exploration with excision of the lesion after a repeat transthoracic echocardiography suggested a space-occupying lesion in the interventricular septum. Read More

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Effect of Laparoscopic Ovarian Cystectomy on Ovarian Reserve in Benign Ovarian Cysts.

J Hum Reprod Sci 2021 Jan-Mar;14(1):56-60. Epub 2021 Mar 30.

Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.

Background: Laparoscopic cystectomy is one of the common modes of treatment for benign ovarian cysts. The data related to the effect of cystectomy on ovarian reserve are limited.

Aim: The aim of this study was to investigate the effect of laparoscopic ovarian cystectomy on anti-Mullerian hormone (AMH) levels in benign ovarian cysts. Read More

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Ovarian Torsion Due to Mature Cystic Teratoma During the Early Postpartum Period: A Rare Case Report.

Int Med Case Rep J 2021 20;14:333-338. Epub 2021 May 20.

Department of Pathology, University of Health Sciences- Somalia Turkey Recep Tayyip Erdogan Education and Research Hospital, Mogadishu, Somalia.

Mature cystic teratoma (MCT) is a benign and unilateral ovarian neoplasm usually seen in premenopausal women. Its most common complication, torsion, is a well-known cause of acute abdominal pain. However, it is rare in the early postpartum period. Read More

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Ovarian epithelioid angiosarcoma complicating pregnancy: a case report and review of the literature.

J Int Med Res 2021 May;49(5):3000605211019641

Department of Gynecology and Obstetrics, Xiangya Hospital Central South University, Changsha, Hunan, China.

Epithelioid angiosarcoma is a rare and highly aggressive soft tissue angiosarcoma most commonly arising in the deep soft tissues. Given that abundant vascular cavities anastomose with each other, most angiosarcomas prone to metastasis recur quickly, and the overall prognosis is poor. We report a 25-year-old woman at 24 weeks' gestation who presented with a 1-month history of abdominal distension. Read More

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Differential diagnosis of adipocytic differentiation in androgen-secreting mature ovarian teratoma with Leydig cell hyperplasia.

Gynecol Oncol Rep 2021 May 8;36:100786. Epub 2021 May 8.

Norfolk and Norwich University Hospital, UK.

Mature cystic teratomas (dermoid cysts) of the ovary are very rarely associated with androgen production. The source of androgens in these cysts may be tumours such as Sertoli-Leydig cell tumour or Leydig cell hyperplasia. In this study, we present a case of virilisation in a postmenopausal female patient, where Leydig cell hyperplasia in a mature cystic teratoma was found to be responsible for the production of testosterone. Read More

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A rare case of retroperitoneal teratoma with obstructed hemivagina and ipsilateral renal anomaly (OHVIRA) syndrome.

BMJ Case Rep 2021 May 19;14(5). Epub 2021 May 19.

Department of Pediatrics, Osaka Red Cross Hospital, Osaka, Japan.

A 9-month-old girl presented with progressive abdominal distension. Imaging revealed a huge cystic mass in the left retroperitoneum with solid components. The right kidney was absent and hydrometrocolpos was found. Read More

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A Giant Sacrococcygeal Teratoma in an Adult Male: A Case Report.

Cureus 2021 Mar 29;13(3):e14181. Epub 2021 Mar 29.

Surgery, All India Institute of Medical Sciences, Rishikesh, Rishikesh, IND.

Sacrococcygeal teratoma (SCT) in adults is very rare with only a few cases reported in the literature. Its presentation in the adult is asymptomatic to a slow-growing cystic tumor with a 1-2% chance for malignant transformation and may attain a huge size causing pressure effect on pelvic and intra-abdominal organs. It can present unusually as a perianal abscess which needs to be evaluated radiologically. Read More

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Burned-out Post Pubertal Teratoma Presenting as a Liver Metastases in a 34-Year-Old Male.

Iran J Pathol 2021 21;16(2):232-236. Epub 2020 Dec 21.

Department of Pathology, Cancer Institute, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Iran.

Germ cell teratomas belong to non-seminomatous germ cell tumors and account for 95% of malignant testicular tumors. Regarding the current World Health Organization (WHO) criteria, testicular teratomas are divided into prepubertal and post-pubertal subtypes based on patients' age. The term "burned-out testicular tumor" is a very rare condition referring to a regressed testicular tumor which presents with its metastases without any clinical finding in the testicle. Read More

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December 2020

Prenatal Diagnosis of Fetal Oral Masses by Ultrasound Combined With Magnetic Resonance Imaging.

J Ultrasound Med 2021 Apr 26. Epub 2021 Apr 26.

Department of Medical Ultrasonic, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.

Objectives: To analyze the imaging manifestations of common fetal oral masses by ultrasound combined with magnetic resonance imaging (MRI) and to discuss their differential diagnoses.

Methods: A retrospective study of 6 fetuses with oral masses was performed at a tertiary referral center. The imaging features of prenatal ultrasonography and MRI in the diagnosis of fetal oral masses were analyzed. Read More

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Extensive mature cystic teratoma in the pelvis of an adult male patient mimicking a prostatic abscess.

Radiol Case Rep 2021 Jun 9;16(6):1343-1347. Epub 2021 Apr 9.

Department of Radiology, University of California San Diego, 408 Dickinson Street, San Diego, CA 92103, USA.

Mature cystic teratomas are rare neoplasms composed of tissues from at least two of the germ layers. In the adult male pelvis, these tumors are exceptionally rare; only a small number of cases have been reported in the literature. We describe the case of a 76-year-old male with an extensive mature cystic teratoma in the rectovesical space, perineum, scrotum, and gluteal folds. Read More

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Renal teratoma: Literature review and case report.

Urol Case Rep 2021 Sep 26;38:101658. Epub 2021 Mar 26.

Diagnose, SQSW 303, bloco C, apartment 503, CEP 70673-303, Federal District, Brazil.

The teratomas are derived neoplasms of totipotent embryonic cells and are extremely rare. We reported a Renal tumor on the right in a 36 years old patient, incidentally detected by imaging exams as a large and complex cystic lesion. Radical nephrectomy was performed with histopathological diagnosis of mature teratoma. Read More

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September 2021

Synchronous colonic adenocarcinoma and well-differentiated neuroendocrine tumor arising in a mature cystic teratoma of ovary - rare presentation in a postmenopausal woman with literature review.

Indian J Pathol Microbiol 2021 Apr-Jun;64(2):385-389

Department of Pathology and Lab Medicine, All India Institute of Medical Sciences (AIIMS), Bhubaneswar, Odisha, India.

Mature cystic teratoma of the ovary (MCT) is rare in pre and postmenopausal age patients. Among various types of malignant transformation in MCT, adenocarcinoma is a rare subtype. Dual type tumors arising from ovarian MCT have been described in the literature very rarely. Read More

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J Zoo Wildl Med 2021 Apr;52(1):332-336

College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL 61802, USA,

Giraffes () are commonly managed in zoos and conservation programs worldwide, but the current understanding of the occurrence and progression of neoplastic disease in this species is limited by the scarcity of published reports. This study collated documented cases of neoplasia on the basis of gross and histologic evaluation of ante- and postmortem samples. In total, 30 giraffes from 22 institutions across the United States were included. Read More

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Mucinous Cystic Adenoma of the Liver: A Thought-Provoking Case of an Uncommon Hepatic Neoplasm.

Am J Case Rep 2021 Apr 3;22:e931368. Epub 2021 Apr 3.

Department of Surgery, Shiga General Hospital, Moriyama, Shiga, Japan.

BACKGROUND Mucinous cystic neoplasm (MCN) of the liver is a rare hepatic neoplasm: a cystic, mucus-producing tumor. Histopathologic examination reveals ovarian-like stroma. The origin of MCN of the liver is still unknown, although ectopic ovarian-like stroma in the liver has been suggested as a possibility. Read More

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Malignant transformation arising from mature ovarian cystic teratoma: A case series.

Medicine (Baltimore) 2021 Apr;100(13):e24726

Department of Oncology.

Abstract: Malignant transformation arising in mature cystic teratoma (MT-MCT) is a rare neoplasm of the ovary. Herein, we aimed to evaluate the clinicopathological features and treatment outcome of the Han Chinese women with MT-MCT.In this retrospective study, the clinical data of patients who had been surgically treated from January 2000 to November 2019 and in whom the diagnosis of MCT was confirmed based on the pathology were included. Read More

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Mucinous Epithelium in Endometrial Curetting Leading to Diagnostic Conundrum: A Case Report.

Int J Gynecol Pathol 2021 Mar 29. Epub 2021 Mar 29.

Departments of Histopathology (G.G., I.N.B.) Radiology (F.H.), Royal Surrey County Hospital, Guildford, UK.

Mucinous differentiation of the endometrium can occur in a spectrum of changes ranging from benign (metaplasia) to malignant (adenocarcinomas with mucinous differentiation). A rarer differential which is usually not considered is a teratoma. We present a case of a 55-yr-old woman with history of irregular perimenopausal bleeding. Read More

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Bronchus-like Structures in Ovarian Teratomas: Report of a Series of a Previously Unreported Phenomenon With Potential For Misdiagnosis.

Int J Gynecol Pathol 2021 Mar 23. Epub 2021 Mar 23.

Department of Pathology, Belfast Health and Social Care Trust, Belfast, Northern Ireland (S.R., C.B., W.G.M.) Department of Pathology, Craigavon Area Hospital, Craigavon (R.S.), UK School for Women's and Infants' Health, University of Western Australia, Perth, WA, Australia (C.J.R.S.).

We report 10 cases of a previously undescribed lesion within ovarian teratomas which we designate bronchus-like structures. The lesions occurred in patients aged 16 to 56 yr (mean: 36) and involved the left ovary (n=5) or right ovary (n=5). Nine cases were mature teratomas (dermoid cysts/mature cystic teratomas or mature solid teratomas), 1 with somatic malignant transformation, and 1 was an immature teratoma. Read More

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Struma ovarii in bilateral ovarian teratoma-case report and literature review.

J Surg Case Rep 2021 Mar 8;2021(3):rjab028. Epub 2021 Mar 8.

Gynecology and Obstetrics, Centro Hospitalar Tondela-Viseu, 3504-509 Viseu, Portugal.

Struma ovarii is an uncommon ovarian tumour, defined by the finding of thyroid tissue in the ovary, and more frequently found in teratomas. Symptoms of struma ovarii are nonspecific. The definite diagnosis is made by histological examination. Read More

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Original Articles Preoperative Hematological Parameters for Predicting Ovarian Torsion in Patients with Mature Cystic Teratoma.

Int J Womens Health 2021 10;13:317-326. Epub 2021 Mar 10.

Department of Obstetrics and Gynecology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Republic of Korea.

Objective: The objective of this study is to evaluate the preoperative hematological parameters to predict ovarian torsion in patients with ovarian mature cystic teratoma. We also analyzed the diagnostic value of these makers to predict ovarian necrosis in cases of torsion as well as the effect of torsion on ovarian reserve.

Patients And Methods: This is a retrospective study of 132 patients who received either laparoscopic or laparotomy surgery for OMCT at a single university hospital. Read More

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An Oropharyngeal Obstructive Lesion in a Neonate.

Ear Nose Throat J 2021 Mar 15:145561321995014. Epub 2021 Mar 15.

Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, 2202Cooper University Health Care, Camden, NJ, USA.

Neonatal HNT in the pharynx is a rare cause of respiratory distress and poor feeding in the newborn, but must be differentiated from teratoma, encephalocele, and nasal glioma. While surgical resection is the preferred treatment modality, we posit there is a role for sclerosis of the glial heterotopic cyst if complete surgical excision is not possible or carries risk of high morbidity. Here, we present a case of a 7-day-old neonate presenting with acute respiratory distress found to have a nasopharyngeal/oropharyngeal mass ultimately treated with sclerotherapy at 9 months of age. Read More

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Congenital orbital teratoma: A clinicopathologic case report.

J Obstet Gynaecol Res 2021 Jun 14;47(6):2225-2229. Epub 2021 Mar 14.

Department of Obstetrics and Gynecology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China.

Here we report an extremely rare case of immature congenital orbital teratoma. The ultrasound scan at the 28 week of gestation revealed a massive, solid, and cystic mass in the left orbital region of the fetus. The lesion site was confirmed by magnetic resonance imaging. Read More

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Genetic Profiling of Malignant Melanoma Arising from an Ovarian Mature Cystic Teratoma: A Case Report.

Int J Mol Sci 2021 Feb 28;22(5). Epub 2021 Feb 28.

Genomics Unit, Keio Cancer Center, Keio University School of Medicine, 35 Shinanomachi, Shinjukuku, Tokyo 160-8582, Japan.

Ovarian mature cystic teratomas comprise tissues derived from all three germ layers. In rare cases, malignant tumors arise from ovarian mature cystic teratoma. A variety of tumors can arise from mature cystic teratoma, among which primary malignant melanoma (MM), for which no molecular analyses such as genomic sequencing have been reported to date, is exceedingly rare, thereby limiting possible therapeutic options using precision medicine. Read More

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February 2021

Squamous Cell Carcinoma Arising From a Mature Cystic Teratoma of the Ovary: A Case Report.

Cureus 2021 Jan 21;13(1):e12846. Epub 2021 Jan 21.

Gynecologic Oncology, Complejo Hospitalario Universitario Insular-Materno Infantil, Las Palmas de Gran Canaria, ESP.

Germ cell tumors represent 20-25% of ovarian tumors, and 95% of them are benign. The most frequent type is the mature benign teratoma (dermoid cysts). The proportion of cases in which malignancy occurs is 0. Read More

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January 2021

An adolescent girl with coexisting ovarian mature cystic teratoma and HAIR-AN syndrome, an extreme subtype of polycystic ovarian syndrome.

Endocrinol Diabetes Metab Case Rep 2021 Feb 17;2021. Epub 2021 Feb 17.

Endocrinology Unit, Department of Internal Medicine, Queen Elizabeth Hospital, Kota Kinabalu, Sabah, Malaysia.

Summary: Polycystic ovarian syndrome (PCOS) is associated with menstrual irregularities, ovulatory dysfunction, hirsutism, insulin resistance, obesity and metabolic syndrome but is rarely associated with severe hyperandrogenaemia and virilisation resulting in male pattern baldness and clitoromegaly. Total serum testosterone greater than twice the upper limit of the reference range or free androgen index of over five-fold elevated suggests a diagnosis other than PCOS. We reported a case of a 15 years old obese girl presented with secondary amenorrhoea, virilising signs: frontal baldness, clitoromegaly and prominent signs of insulin resistance and marked acanthosis nigricans. Read More

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February 2021

Ruptured mediastinal mature teratoma causing severe mediastinitis: report of a surgically resected case and a literature review.

Surg Case Rep 2021 Feb 16;7(1):48. Epub 2021 Feb 16.

Department of Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, Japan.

Background: Mediastinal teratomas occasionally rupture into the thoracic cavity, which induces mediastinitis or various other severe complications. Surgical treatment is crucial for ruptured teratomas; however, few literature reviews to date have addressed the characteristics of ruptured mediastinal teratomas.

Case Presentation: We report a 29-year-old woman with severe mediastinitis owing to a mediastinal mature teratoma that ruptured into the mediastinum and right pleural cavity. Read More

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February 2021

Retroperitoneal teratoma resection assisted by 3-dimensional visualization and virtual reality: A case report.

World J Clin Cases 2021 Feb;9(4):935-942

Department of Hepatobiliary Surgery, Xiang'an Hospital, School of Medicine, Xiamen University, Xiamen 361102, Fujian Province, China.

Background: Primary retroperitoneal tumor is a rare type of tumor with insidious onset, large tumor size at the time of diagnosis, and often extensive involvement of surrounding tissues and blood vessels in the retroperitoneum. Surgery for primary retroperitoneal tumors is technically challenging. Preoperative imaging evaluation is critical for the selection of the optimal surgical approach and can influence complete resection and recurrence rates. Read More

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February 2021

Antenatal Diagnosis of Retroperitoneal Cystic Mass: Fetiform Teratoma or Fetus in Fetu? A Case Report.

Am J Case Rep 2021 Feb 11;22:e929247. Epub 2021 Feb 11.

Department of Surgery, Division of Pediatric Surgery, Loma Linda University Children's Hospital, Loma Linda, CA, USA.

BACKGROUND Teratoma, a tumor containing a variety of tissues, is a broad diagnosis containing mature teratoma, immature teratoma, and teratomas with malignant transformation. The tumor forms during embryological development secondary to unsuccessful migration of primordial germ cells. A specific type of mature teratoma, containing human-like features, is called a fetiform teratoma. Read More

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February 2021

Primary Ovarian Melanoma Arising From a Mature Teratoma With Melanoma In Situ Present in the Ciliated Columnar and Squamous Epithelium in a Patient With Synchronous Skin Basal Cell Carcinoma.

Int J Gynecol Pathol 2021 Jul;40(4):383-390

Primary ovarian melanoma arising from ovarian teratomas are rarely reported and difficult to accurately diagnose. Cases in the literature rely on a diagnosis of exclusion, and cases of primary ovarian melanoma with pathologic evidence of melanoma in situ are exceedingly rare. We report a case of a 66-yr-old female who presented to emergency department with abdominal pain and bloating. Read More

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Laparoscopic hepatectomy for hepatic angiomyolipoma with preoperative diagnosis of other malignancy: a report of 2 cases.

Surg Case Rep 2021 Feb 8;7(1):44. Epub 2021 Feb 8.

Department of Gastroenterological Surgery I, Hokkaido University Hospital, Kita-ku, Kita 15, Nishi 7, Sapporo, Hokkaido, 060-8638, Japan.

Background: Hepatic angiomyolipoma (HAML) is a rare liver tumor, and hepatectomy is the only effective treatment. Due to the difficulty of correct diagnosis of HAML before surgery by image studies, more than 36.6% of reported HAMLs are misdiagnosed as other malignant liver tumors before surgery. Read More

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February 2021