We report nasopharyngeal teratoma in a term female neonate, that presented within first week of life with episodic stridor, apnea and cyanosis. Laryngoscopy revealed a mass which was confirmed by MRI. The mass was surgically excised and diagnosed as nasopharyngeal teratoma on histopathology. The child is doing well on follow-up.

Mediastinal mature teratoma is the most common form of germ cell tumors, often located in the anterior mediastinum. A posterior mediastinum location has rarely been described. We report a case of a posterior mediastinal mature teratoma in a 37-year-old patient and a literature review, through which we describe the diagnostic and therapeutic difficulties inherent in this particular location of t...

A 21 year old female presented with incidental findings of complex anterior mediastinal mass. This patient was otherwise healthy, without contributory medical, surgical, family or social history. CT imaging identified a right paracardiac mediastinal mass with components of variable attenuation, including fluid, soft tissue and fat components. Mediastinal mature teratoma was suspected. Cystic or...

OBJECTIVES Yolk sac tumor (YST) is a rare neoplasm that primarily occurs in the ovary in children and young women. Previously, it has been reported that the teratomatous components can be recognized in part of YSTs or appear in the contralateral ovary. Here, we report a rare case of an adult woman with a juxtaovarian YST concurrent with an ipsilateral ovarian mature teratoma. METHODS A 47-yea...

Ovarian immature teratoma is a germ cell tumor that comprises less than 1% of ovarian cancers and is treated with surgical debulking and chemotherapy depending on stage. Growing teratoma syndrome (GTS) is the phenomenon of the growth of mature teratoma elements with normal tumor markers during or following chemotherapy for treatment of a malignant germ cell tumor. These tumors are associated wi...

Introduction: The mature teratoma or dermoid cyst of the ovary is a benign tumor with good prognosis which constitutes less than 1% ovarian tumors. Its association pregnancy rare. Case Report: We report case 30-year-old woman admitted for acute pelvic pain an abdomino-pelvic mass diagnosed on ultrasound supplemented by magnetic resonance imaging (MRI). indication surgical exploration was given ...

Testicular teratomas result from anomalies in embryonic germ cell development. In the 129 family of inbred mouse strains, teratomas arise during the same developmental period that male germ cells normally enter G1/G0 mitotic arrest and female germ cells initiate meiosis (the mitotic:meiotic switch). Dysregulation of this switch associates with teratoma susceptibility and involves three germ cel...

Mature cystic teratoma accounts for 10-20 % of all ovarian tumors. Malignant transformation is very rare in mature cystic teratoma, its incidence being 1-2% and is commonly seen in post menopausal women with tumor size larger than 10 cm. Pre-operative diagnosis of this entity is difficult due to non specific clinical & radiological features and no specific tumor markers. Malignant change occurs...

Introduction: Germ cell tumors account for approximately 30% of all ovarian tumors. Ninety-five percent of germ cell tumors are dermoid cyst (mature cystic teratoma). It is composed of mature tissues derived from 3 germ cell layers (ectoderm, mesoderm, and endoderm). Malignant transformation in a mature cystic teratoma of the ovary is a rare event, developing in 1 to 2 % of cases and is associa...

Background: Teratomas are the most common ovarian germ cell tumors. Growing teratoma syndrome is a rare condition that entails appearance of extragonadal teratomas during or after chemotherapy treatment non seminomatous