Abstract
The favorable results Drs Casey and Madden experienced with the Gravlee jet irrigation technique are to be commended. Certainly, strict control of all variables will increase the reliability of this technique. As the correspondents suggest, it is possible that our results could have been improved by varying the processing method; however, our pathology department tested and then discarded the permeable membrane filter (Millipore) technique, as did Dr Gravlee, 1 since it added little information. In our study, collection of gross tissue fragments was accomplished by rinsing the tip of the irrigator in the fixing solution as a terminal step in gathering the specimen. It is perhaps teleologic that the onset of symptoms is directly proportional to the extent of the disease. Thus, the accuracy of a given technique would increase in patients with symptoms and presumably more advanced lesions. Possibly, this is not the case. On the other hand,
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