Gravlee jet wash was performed on 303 patients under anesthesia, and the results correlated with histologic findings in all instances. The results were fully reliable in advanced endometrial cancer, although there were several failures in the diagnosis of focal cancer occurring in hyperplasia and in the diagnosis of hyperplasia of various types. Possible reasons for these failures are discussed in extenso. It Is suggested that the finding of hyperplastic endometrium in the jet wash cell block should trigger a search for endometrial carcinoma. It Is also suggested that a negative jet wash in a symptomatic patient is not sufficient indication for withholding a diagnostic curettage. The major advantage of the jet wash is to provide the pathologist with diagnostic material with which he has greater familiarity than with the cytologic sample. Failures with the jet wash technic arc in keeping with those incurred with other diagnostic procedures and should not detract from its use.
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