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...

BACKGROUND Germ cell tumors are tumors composed of tissues derived from more than one of the three germinal layers. They are more common in the testes and ovaries, but can present in many different regions in the midline, including the sacral region, retroperitoneum, mediastinum, and brain. Testicular germ cell tumors generally metastasize to the retroperitoneum, lungs, and brain; metastases to...

Germ cell tumors account for less than 3% of all ovarian cancers. These tumors generally appear in childhood or in those under 30 years of age. Immature ovarian teratoma is the third most frequent germ cell tumor after dysgerminoma and endodermal sinus tumors. These tumors should be distinguished from mature teratomas. Discrimination of malignant and benign tumors depends on the presence of the...

Herein, we report a case of successful mature oocyte retrieval during laparotomy after random-start controlled ovarian stimulation (COS) in a 21-year-old nulliparous woman with suspected recurrent ovarian immature teratoma. The patient had been diagnosed with stage IIIC immature teratoma two years earlier following a staging operation, including right oophorectomy and left ovarian cystectomy. A...

We present the first report of an immature teratoma arising from a germ cell testicular cancer invading the duodenum. While other seminomatous and non-seminomatous germ cell tumors are known to metastasize to the duodenum, this is the first such case involving an immature teratoma directly invading the duodenum from a metastatic retroperitoneal mass.

We report a patient who has maintained a regular menstrual cycle despite undergoing cystectomy and chemotherapy for contralateral recurrence of ovarian immature teratoma with gliomatosis peritonei. We initially performed a fertility-sparing right salpingo-oophorectomy, omentectomy and peritoneal biopsy for immature teratoma with gliomatosis peritonei, with adjuvant chemotherapy; we performed a ...

Immature gastric teratoma is an uncommon germ cell tumor of the stomach. We report a rare case of immature gastric teratoma in an infant with down syndrome with clinically presenting with hematemesis and severe anemia. Complete surgical resection remains the cornerstone of treatment.

Gastric teratoma GT is a rare neoplasm which accounts for less than 1% of all teratomas in children. Little more than 100 cases of GT are reported in the literature out of which, about a dozen cases are of immature variety. We present a case of immature gastric teratoma in a 7-month-old male baby.