(Reuters) - Toshiba Corp will issue on Tuesday its first-ever warning that it may not be able to continue as a going concern, following massive nuclear-related losses, the Nikkei reported.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=RYP_cXTKUeY:1XWiYbZAwNc:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=RYP_cXTKUeY:1XWiYbZAwNc:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=RYP_cXTKUeY:1XWiYbZAwNc:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=RYP_cXTKUeY:1XWiYbZAwNc:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=RYP_cXTKUeY:1XWiYbZAwNc:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/RYP_cXTKUeY" height="1" width="1" alt="" />