BMS 460 Study Guide - Quiz Guide: Amenorrhoea, Puberty, Toxicant
26 Apr 2014
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Document Summary
A collection of disorders of the male reproductive system that may be related to one another and have a common cause abnormal development of the testes during fetal development. Environmental and lifestyle factors, intrauterine growth disorders, genetic defects and polymorphisms testicular dysgenesis. Non-germ cell tumors or sex cord cell tumors. The tumors originate from intratubular germ cells that form carcinoma in situ, cis, also called intratubular germ cell neoplasia, itgcn. Tumors derived from itgcn are divided into 2 major groups: seminomas and non- seminomatous germ cell tumors. Nsgct include several subtypes; embryonal carcinoma cells are the stem cells of most. Testicular tumors have a peak incidence in men 25 to 45 years old. Cis gives rise to classical type of seminoma and non-seminoma. Tumors derived from germ cells, mostly in the testis and ovary, contain embryonic cells (embryonal carcinoma cells) that differentiate into embryonic germ layers ectoderm, mesoderm, and endoderm.
