To the Editor.—I wish to congratulate Calcaterra et al on the thoroughness with which they evaluated the role of sialography in tumor diagnosis and for the quality of their illustrations in their article in the December 1977 issue of the Archives (103:727-729). I must, however, take them to task for two points: First, they misquoted my previous work.1 Second, the conclusions in their article are not supported by their findings. My previous publication1 implied that radiosialography could be of value in determining whether a cold lesion of the parotid gland was located deep or superficially within the gland. Calcaterra et al quoted me as saying that sialography would do the same thing. These are two quite dissimilar techniques, and I do not believe that contrast sialography allows one to make the same judgment.
Although Calcaterra et al stated that "sialography can provide reasonably accurate information... which may