a paper published in 1995, cells with these characteristic features had been previously noted in 1978, when they were noted to occur in a rare and extremely aggressive form of kidney cancer that appears almost exclusively in young children called "wilms tumor". lclc-rp were first recognized as a distinct entity under the 3rd (published in 1999) revision of the world health organization (who) lung tumor histological typing scheme. its placement in the classification schema went unchanged during the 2004 revision.