Immature teratomas are rare malignant germ cell neoplasms accounting for less than 1% of all ovarian tumors. The aim of this study was to provide an updated overview on clinicopathological features, treatment and outcome of immature teratoma of the ovary. Our study group included four women aged between 20 and 49 years (mean = 29.5 years). The presenting clinical symptoms were dominated by pelv...

BACKGROUND Mature cystic teratoma is one of the most common tumors of the ovaries; however, primary retroperitoneal lesions are rare entities in adults. CASE SUMMARY We report a case of a 33 year-old woman noticing a mass in her epigastric and left upper abdominal region without any specific signs and symptoms. Radiological evaluation revealed a retroperitoneal mass with extension from the po...

We report a case in which an immature teratoma developed following three previous resections for mature cystic teratomas. The patient was a 26-year-old nulliparous woman with a regular menstrual cycle. Twelve years earlier, she had consulted a pediatrician for complaints of lower abdominal pain. Bilateral cystic teratomas were suspected and she underwent a left salpingo-oophorectomy and a right...

Spontaneous ovarian teratoma was found in a seven-week-old female Chunky broiler chicken that was slaughtered for food. On post-mortem inspection, a spherical tumor mass attaching to a juvenile ovary was found in the abdominal cavity. Histopathologically, the tumor was comprised of immature mesenchymal stroma and a variety of mature tissue elements of mesodermal and ectodermal origin. In additi...

We present a case of retroperitoneal teratoma in a 4-year-old girl in which a Wilms' tumor-like element was predominant, unlike the usual pattern of the immature or malignant teratoma. Mature elements were composed of adipose tissue, neural plexus and ganglia, cartilage, smooth and skeletal muscles, and glandular epithelium of the respiratory and gastrointestinal types. Three months after compl...

A case of mature cystic teratoma that contained florid vascular proliferation is reported. The ovarian tumor occurred in a 9-year-old girl; symptoms consisted of vomiting, abdominal pain and a palpable mass. The microscopic findings were mostly typical of a mature cystic teratoma, but also abundant vascular proliferation mimicking hemangioma in association with mature neural tissue was observed...