Ten years ago, the Journal published my review of von Recklinghausen neurofibromatosis,¹ now aptly called neurofibromatosis 1. In that article, I emphasized a previously arcane feature of the disorder, for which a new term was coined: "Lisch nodule." When I met Professor Lisch, who had pointed out the association of the nodules with neurofibromatosis in 1937,² for the first time in May 1990, he startled me with his gratitude both for the term's having been used in the first place and for its having immediately secured a place in the modern medical lexicon. Neither Richard Lewis³ nor I realized when . . .