“…In that series all affected parents had adenoma sebaeeum and in their families eleven of eighteen sibs of propositi were affected; by contrast none of the 137 sibs in the families where the parents did not have adenoma sebaceum was affected. Bundey, Dutton and Wells (1970) described a man with a shagreen patch but without adenoma sebaceum whose three children were affected by tuberous sclerosis. The position in tuberous sclerosis may be contrasted with that in dystrophia myotonica.…”