Document Details Document Type : Article In Journal  Document Title : Clinicopathological Features of Immature Neck Teratoma Case Report. Clinicopathological Features of Immature Neck Teratoma Case Report.   Document Language : English  Abstract : Teratomas are complex tumors composed of a collection of heterogeneous cells and/or organoid structures reminiscent of normal derivatives of all three germ cells.1,2 They occur in genital systems and other organs along the midline of the body, with similar morphology and classification. Ovarian teratomas constitute the major fraction and make up 15%- 20% of all ovarian tumors,1 yet teratomas are very rare in other locations, especially the neck.3-17 Benign mature teratomas have well-differentiated mature tissue representatives of all three germ cell layers, including neuroectodermal,16 while immature malignant teratomas have less differentiated elements from all or any of the three germinal layers. Histologically immature elements that are prognostically important include embryonal neuroepithelial structures that resemble medulloepithelioma, neuroblastoma, retinoblastoma or ependymoblastoma.  ISSN : 11472636  Journal Name : Annals of Saudi Medicine  Volume : 21  Issue Number : 2  Publishing Year : 1421 AH 2001 AD  Article Type : Article  Added Date : Monday, May 17, 2010  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email عواطف جمال Jamal, Awatif Researcher Doctorate Awatjamal@yahoo.com Files File Name Type Description  26733.doc doc   Back To Researches Page