teratoma/hypoxia

Pathological hypoxia exists in solid tumors and it creates a microenvironment for tumor cells which has a critical and complicated implication for cancer. Hypoxia can also activate autophagy which plays a dual role in cancer. In this study the authors analyzed the effect of hypoxia, the autophagy

The management of cervicofacial teratomas in neonates is often complicated and may result in significant morbidity and death. A Childrens Cancer Group (CCG) retrospective study was conducted to evaluate a multiinstitutional experience with the treatment of these extremely rare neoplasms. Twenty

We report a case of a cervical teratoma that was diagnosed prenatally. In anticipation of potential upper airway obstruction, resources were mobilized to the operating room at the time of planned cesarean section. The neonate developed respiratory distress, and her airway was secured. There was no

Cervical teratomas are 3 to 5% of all teratomas and have an incidence of 1:20,000 to 1:40,000 live-borns. M.J.F., 31-years-old, had done a routine scan during pregnancy that evidenced a large fetal neck mass with teratoma cervical sonographic aspect. An interdisciplinary reunion decided for

A very preterm infant with a prenatally diagnosed sacrococcygeal teratoma presented for urgent resection. Intraoperatively, he required massive transfusion due to hemorrhage with progressive decline in lung compliance and hypoxia. Rescue surfactant was given with immediate improvement in ventilation

Primary tumors of the heart are infrequent at all ages. We present a newborn with hypoxia and a heart murmur, in whom an echocardiogram revealed a large tumor filling the right ventricle and the pulmonary annulus. To maintain pulmonary blood flow, the patency of the ductus arteriosus was achieved by

In 30-50 percent of cases mature cystic ovarian teratomas contain a nervous tissue which can be highly differentiated. This study was focused on research of the nervous component of mature cystic ovarian teratomas with generally available methods to pathologists, including impregnation techniques,

Fetal sacrococcygeal teratoma (SCT) with hydrops fetalis is known to have a poor prognosis. We report a case of SCT with hydrops fetalis which was diagnosed antenatally at 30 weeks gestation. After delivery by cesarean section, the tumor was removed and the infant is alive one year after surgery

Large fetal neck masses can present a major challenge to securing an airway at birth, with associated risks of hypoxia, brain injury and death. The authors report a case of a giant oropharyngeal teratoma diagnosed in a fetus of 19 weeks gestation. The fetus was delivered by the ex utero intrapartum

Yawning occurs in various conditions such as hypoxia, epilepsy, and sleep disorders including sleep apnea. Intractable yawning associated with a brain tumor has been rarely reported. A 19-year-old woman presented with intractable yawning. Magnetic resonance imaging showed a tumor in the supramedial

The removal of massive tissue tumors often leads to rapid blood loss and decreased lung compliance because of large volume shifts. Cardiopulmonary bypass (CPB) and extracorporeal membrane oxygenation (ECMO) have both been used as a means of support during resection of saccrococcygeal teratomas.

Hypoxia-inducible factors (HIF) are essential transcriptional regulators that mediate adaptation to hypoxic stress in rapidly growing tissues such as tumors. HIF activity is regulated by hypoxic stabilization of the related HIF-1alpha and HIF-2alpha subunits, which are frequently overexpressed in

Multipotent mesenchymal stromal cells (MSCs) from Wharton's jelly (WJ) of umbilical cord bear higher proliferation rate and self-renewal capacity than adult tissue-derived MSCs and are a primitive stromal cell population. Stem cell niche or physiological microenvironment plays a crucial role in

Adult stem cells reside in hypoxic niches, and embryonic stem cells (ESCs) are derived from a low oxygen environment. However, it is not clear whether hypoxia is critical for stem cell fate since for example human ESCs (hESCs) are able to self-renew in atmospheric oxygen concentrations as well. We

Derivation of articular chondrocytes from human stem cells would advance our current understanding of chondrogenesis, and accelerate development of new stem cell therapies for cartilage repair. Chondrogenic differentiation of human embryonic stem cells (hESCs) has been studied using supplemental and