About The Medical Condition Tumor, Yolk Sac
Find the definition of the medical term Tumor, Yolk Sac. Tumor, Yolk Sac defined and explained for easy understanding at the Medical Conditions from ClusterMed.info.
Tumor, Yolk Sac
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What's The Definition Of The Medical Condition Tumor, Yolk Sac?
An unusual and aggressive tumor of germ-cell origin that reproduces the extraembryonic structures of the early embryo. It is the most common malignant germ cell tumor found in children. It is characterized by a labyrinthine glandular pattern of flat epithelial cells and rounded papillary processes with a central capillary (Schiller-Duval body). The tumor is rarely bilateral. Before the use of combination chemotherapy, the tumor was almost invariably fatal. (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1189)
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