1.   The reported incidence after fine, needle aspiration is very low.

2.   A recent report has suggested, however, that malignant cells are frequently disseminated in the peritoneal cavity after percutaneous fine needle aspiration.

3.   In these patients two novel cytology methods, endobiliary biopsy and endobiliary fine needle aspiration, may be suitable.

4.   Now, with the fine needle aspiration, Sherins and his colleagues believe they have taken the next leap forward.