The occurrence of malignant transformation in mature cystic teratoma of the ovary is rare, with squamous cell carcinoma being the most common histologic type. Sarcomatous transformation has been rarely described in the literature. We present a case of leiomyosarcoma with a minor component of squamous cell carcinoma arising in mature cystic teratoma of ovary in a 65-year-old woman. The malignant...

Mature cystic teratoma is the most common benign neoplasm of the ovary, accounting for 27-44% of all ovarian tumors and up to 58% of benign ovarian tumors [1], and is composed of mature-appearing derivatives of two or three embryonal layers [2]. Ectodermal derivatives are observed in almost all mature teratomas [2]. Organized mature neural tissue is a common component. Glial tissue is the most ...

The coexistence of spinal teratoma of the conus medullaris and arteriovenous malformation (AVM) is exceptional, which has not been reported previously in the literature. The precise mechanism of the coexistence of these conditions is not known, however, the dysembryonic origin of spinal cord teratoma and AVM seems to play a part in this process. A 34-year-old male patient was admitted with lowe...

Benign cystic teratoma is recognized as one of the most common tumors in women during the reproductive age and frequently is treated by pelviscopic operation. Malignant transformation of a benign cystic teratoma is a rare event, and adenocarcinoma is extremely rare, and distinguishing this malignant change from benign disease preoperatively is nearly impossible even by the use of radiological i...

31 cases of sacrococcygeal teratoma from the Children's Hospital of Ziirich and 25 cases from the Children's Hospital of Tehran are evaluated and compared. In seven cases the tumors were organized. They contained parts of organs or rudimentary extremities. According to general experience the malignancy of tumors is higher in children who are operated on after their second to fourth month o...

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.

BACKGROUND:Teratoma, a tumor containing variety of tissues, is broad diagnosis mature teratoma, immature and teratomas with malignant transformation. The forms during embryological development secondary to unsuccessful migration primordial germ cells. A specific type human-like features, called fetiform teratoma. teratoma often compared confused fetus in fetu, reabsorbed twin. While these tumor...

Intrapulmonary teratoma is reported in a 22-year-old male. A chest X-ray in a physical examination showed a round shadow in the left hilum of a 22-year-old man who, on admission, reported slight malaise and a decrease in body weight. Computed tomographic scan and magnetic resonance imaging of the chest showed a heterogeneously dense cystic lesion. The preoperative diagnosis was anterior mediast...

Introduction: Retroperitoneum is the third most common extragonadal site for occurrence of teratoma in children, after sacrococcygeal region and gonadal sites. Although many authors have previously reported laparoscopic removal of benign retroperitoneal teratoma in adults, the experience in pediatric setting is extremely limited. Material and methods: We report our experience with laparoscopic ...

Gastric teratomas are very rare tumours in children. They usually present with a palpable mass in the upper abdomen. We report a case of gastric teratoma in one and half month old male infant who presented with a palpable mass in abdomen, extending from epigastrium to the pelvis. Ultrasound of abdomen revealed a huge mass with solid and cystic components. CT scan delineated calcifications in th...