INTRODUCTION The discovery of a mature teratoma (dermoid cyst) of the ovary during ovarian stimulation is not a rare event. Conversely, we could not find any reported cases of immature teratoma in such a situation. Clinical and ultrasound arguments for this immature form are scarcely or poorly evaluated. CASE PRESENTATION We describe the case of a 31-year-old Caucasian woman with primary infe...

(This section is meant for residents to check their understanding regarding a particular topic) QUESTIONS 1. What is the incidence of sacrococcygeal teratoma? 2. What factors are considered to modify the biologic behaviour of sacrococcygeal teratomas? 3. Discuss antenatal management of sacrococcygeal teratoma? 4. How a newborn with sacrococcygeal teratoma should be worked up? 5. Discuss surgica...

PURPOSE Ovarian hemangiomas are seen rarely. We present a case of an ovarian hemangioma occurring synchronously with contralateral mature cystic teratoma. CASE HISTORY An 81-year-old woman presented with hypertension and hyponatremia. In ultrasonographic evaluation a pelvic mass was found located at the left ovary. Histologically, a mature cystic teratoma measuring 9.5 × 9 × 8 cm was seen in ...

Placental teratoma is a rare nontrophoblastic benign tumour, which is thought to arise from germ cells. These tumours contain elements derived from multiple germ cell layers. We report a case of teratoma, where on ultrasound; there were two echogenic masses of 4 cm × 5 cm and 3 cm × 4 cm, arising from the placenta. Elective lower segment cesarean section was done in view of breech presentation ...

Growing teratoma syndrome (GTS) an extremely rare phenomenon complicatingmalignant ovarian germ cell tumours. Till date very few have been reported. Growing teratoma syndrome (GTS) is characterised by increase in the size of a tumour occurringduring or after chemotherapy for mixed germ cell tumour. Complete surgical resection not only confirms the diagnosis, revealing mature teratoma component,...

BACKGROUND Malignant transformation of mature cystic teratoma is a rare complication. While any of the constituent tissues of a teratoma has the potential to undergo malignant transformation, squamous cell carcinoma is the most commonly associated malignancy. Renal carcinoid tumors are rare and frequently associated with horseshoe kidney and renal teratoma. Renal teratoma rarely presents togeth...

INTRODUCTION Teratoma is a tumor that usually arises from one or more germ layers. They are most commonly found in the sacrococcygeal region and have a female preponderance. We present a very rare case of a boy with a benign cystic teratoma in the lumbosacral region. CASE PRESENTATION A 16-year-old Indian boy presented to our hospital with a history of a lump in the lower back region since bi...

PURPOSE To develop a statistical model that predicts the histology (necrosis, mature teratoma, or cancer) after chemotherapy for metastatic nonseminomatous germ cell tumor (NSGCT). PATIENTS AND METHODS An international data set was collected comprising individual patient data from six study groups. Logistic regression analysis was used to estimate the probability of necrosis and the ratio of ...

BACKGROUND Congenital germ cell tumors are uncommon. The most common site of teratoma is in the sacrococcygeal region. Teratoma arising from the head and neck comprises less than 10% of reported cases and of these, nasopharyngeal lesions are rare. Teratomas are generally benign, and have a well recognized clinical and histopathological entity. We present a case of nasopharyngeal teratoma (NPT) ...

The aim of this study was to assess the biological reactions triggered by stem cell transplantation related to phenotypic alteration, host-to-cell response, chromosomal stability, transcriptional alteration, and stem cell-like cell re-expansion. B6CBAF1 mouse embryonic stem cells (ESCs) were injected subcutaneously into homologous or heterologous (B6D2F1) recipients, and heterologous injections...