embryonal tumors

 embryonal rhabdomyosarcoma
 neuroblastoma
 blastemal tumors

• Wilms tumors (nephroblastoma)
• hepatoblastoma
• pleuropulmonary blastoma (childhood variant of pulmonary blastoma)

Videos

 Retinoblastoma (by Washington Deceit)

@<@object width="425" height="350">@<@param name="movie" value="http://www.youtube.com/v/PLLC3qFqdLA">@<@/param>@<@param name="wmode" value="transparent">@<@/param>@<@embed src="http://www.youtube.com/v/PLLC3qFqdLA" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350">@<@/embed>@<@/object>

References

 Kuttesch JF Jr, Parham DM, Kaste SC, Rao BN, Douglass EC, Pratt CB. Embryonal malignancies of unknown primary origin in children. Cancer. 1995 Jan 1;75(1):115-21. PMID: 7804965