Active clinical trials for "Teratoma"

RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining more than one drug may kill more tumor cells. It is not yet known which regimen of combination chemotherapy may be more effective for germ cell cancer. PURPOSE: This randomized phase II/III trial is studying two different regimens of combination chemotherapy and comparing how well they work in treating men with germ cell cancer.

This clinical trial is studying changes in brain function in patients with stage I, stage II, stage III, or stage IV ovarian, primary peritoneal, or fallopian tube cancer who are receiving chemotherapy. Learning about the effects of chemotherapy on brain function may help doctors plan cancer treatments.

A tumor comprising of different types of tissues (such as hair, muscle, bone, etc.) is known as a teratoma. It is a type of germ cell (cells that make sperm or eggs) tumor. When these germ cells have rapid cancerous growth, then such a teratoma is called a malignant teratoma. We have studied the differences between gonadal and extra-gonadal malignant teratomas and the effects of chemotherapy in both genders. Methods: The samples of 3799 male and 1832 female patients with malignant teratoma samples, between the ages of 1 and 85+ years, were selected from the years 1973 to 2014. Trends in incidence, estimated prevalence, incidence rates, and frequency were calculated in gonadal and extra-gonadal tumors with age adjustment. The fiveyear observed, expected, and relative survival rates were analyzed to study the prognosis.

The purpose of this study is to do a literature review and combine all of the cases of the intrapericardial teratoma tumor and see if some conclusions can be made about this rare tumor in children.

Contribute to support hypothesis of relationships between genes involve in oncogenesis and those involve in embryological development.

The investigators report a case of a 39-year-old man who presented an anterior mediastinal cystic mature teratoma. Those kind of tumor contain elements derived from more than one of the three primary germ layers (ectoderm, mesoderm, endoderm), frequently arranged in a haphazard manner. They arise from totipotent cells and, therefore, are primarily found in gonads, and more rarely in primitive cells kidnapped in other parts of the body. The tissues are immature to well differentiated and foreign to the anatomic site. Mature teratomas are either cystic or solid, although the cystic presentation predominates in gonadal sites. Benign teratomas are the most common mediastinal germ cell tumor, accounting 70% of the mediastinal germ cell tumors in children and 60% of those in adults. Immature teratomas are potentially malignant tumors; their prognosis is influenced by the anatomic site of the tumor, patient age, and the fraction of the tumor that is immature. Treatment of benign mediastinal teratoma includes complete surgical resection, with results in a excellent long-term cure rates. Complete resection of teratomas should be the goal of treatment.

This research trial studies deoxyribonucleic acid (DNA) samples from younger patients with germ cell tumor and their parents or siblings. Studying samples of tumor tissue and saliva from patients with cancer in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer.

Sacrococcygeal teratomas are the most common neonatal tumors and require rapid and complete resection. Tumor nerve compression and pelvic surgical sequelae may lead to many and varied voiding disorders. Data concerning long-term vesico-sphincteric disorders are conflicting. Some studies find good functional results [Cozzi et al., 2008; Draper et al., 2009]. However other authors reveal neurologic bladder with detrusor sphincter dyssynergia [Hambraeus et al., 2018] and rise concerned about long-term renal function [Khanna et al., 2019; Rehfuss et al., 2020] even in the absence of clinical voiding disorders. Most of studies include young patients with other malformations such as anorectal malformations or dysraphisms which may impact the results. The main objective is to assess bladder dysfunction in children aged 6 to 18 years after isolated sacrococcygeal teratoma resection.

Sacrococcygeal teratoma (SCT) is the most common fetal and neonatal tumor. However, predicting factors of evolution, sequelae and relapse are still unreliable because of small-cohort studies. This study aims at identifying prenatal and postnatal prognostic factors of evolution of SCT during pregnancy, of postnatal relapse, and of medium and long-term sequelae (urinary, digestive, esthetic, psychologic) in order to improve parental counseling when the diagnosis of SCT is made during pregnancy.

F18-FDG is the widely used PET tracer in the routine practice of oncologic disease imaging using the technology of PET-CT. However, FDG-avidity is a characteristic of the individual tumor. There are various types of human malignancies, which are not taking FDG in access. In these cases FDG is not a sensitive tracer of imaging. In search for other tumor PET tracers, C11-Acetate has been shown recently in a few early studies to have a potential value in imaging of non-FDG-avid tumors. The purpose of the current study is to assess the role of 11C-acetate PET in various tumors, which often are not detected by 18F-FDG and were not widely assessed until now.