BACKGROUND Anti-N-methyl-D-aspartate receptor encephalitis is a recently discovered disease entity of paraneoplastic limbic encephalitis. It largely affects young women and is often associated with an ovarian teratoma. It is a serious yet treatable condition if diagnosed early. Its remedy involves immunotherapy and surgical removal of the teratoma of the ovaries. This case of anti-N-methyl-D-as...

It is believed that a subset of primary ovarian mucinous tumors is derived from mature teratomas [1-5]. To confirm this, we performed microsatellite genotyping using a variety of short tandem repeat makers and analyzed allelotypes of 8 mucinous tumors (4 mucinous carcinomas, 3 atypical proliferative mucinous tumors and 1 mucinous cystadenoma) associated with a teratoma to determine whether they...

Gastric teratoma is a very rare tumour that usually manifests as an abdominal mass, resulting in gastrointestinal bleeding and/or obstructive features. We report gastric teratoma occurring in a two-year-old boy who presented with an abdominal mass. Diagnosis was aided by the classical findings of teratoma on computed tomography, seen as the presence of fat, calcifications, and both solid and cy...

Primary retroperitoneal teratoma is a rare entity in adults. We present a case of 23-yearsold female who presented with complaint of abdominal pain in left upper quadrant. Computed tomography scan revealed a retroperitoneal retropancreatic teratoma near celiac axis with intra thoracic extension. Laparotomy with tumor resection was done. The case report is interesting for intra thoracic extensio...

We report a case of spontaneous regression of a congenital intracranial lesion presumed to be a teratoma. Various radiological features of teratoma mentioned in the literature are vague complex echogenic mass on prenatal ultrasonography, clump like calcification on CT scan, usual size being more than 5cm, suprasellar and pineal region location. Radiological features of this lesion were consiste...

Sacrococcygeal teratoma with nephroblastic elements is very rare. Only 8 cases have been reported up to date. 3 cases were misdiagnosed as extrarenal nephroblastomas and were administered excessive treatments such as chemotherapy and radiation therapy. It has a great significance to distinguish sacrococcygeal teratoma with nephroblastic elements from extrarenal nephroblastoma for their differen...

A benign teratoma was removed by segmental resection from the upper lobe of the right lung in a girl aged 19 years. This is the twentieth case report of a teratoma occurring in the lung substance and is of special interest because of the identification of thymic tissue histologically. The significance of this in relation to the pathogenesis of intrathoracic teratoma is discussed.

the three germinal layers. Although teratomas involving the ovary, testicle, and retroperitoneum are frequently found, rectal involvement is extremely rare. There have only been about 50 cases of primary rectal teratoma reported since 1864 (1). Herein, we present the radiologic features of a rectal teratoma that was identified with an asymptomatic ovarian teratoma and correctly diagnosed preope...

Spontaneous testicular teratoma develops from primordial germ cells (PGCs) in embryos; however, the molecular mechanisms underlying teratoma formation are not fully understood. Mutation of the dead-end 1 (Dnd1) gene, which encodes an RNA-binding protein, drastically enhances teratoma formation in the 129/Sv mouse strain. To elucidate the mechanism of Dnd1 mutation-induced teratoma formation, we...