MECKELS-DIVERTICULUM - POSSIBLE DETECTION BY COMBINING PENTAGASTRIN WITH HISTAMINE H-2-RECEPTOR BLOCKER

A Meckel's scan was performed on a 7-yr-old boy because of rectal blee ding. He was premedicated with pentagastrin (6 mu g/kg subcutaneously) followed by 259 MBq (7 mCi) [99mTc]pertechnetate intravenously. The s tudy was essentially negative. Because of persistent rectal bleeding a nd a strong clinical suspicion of a Meckel's, a repeat study was perfo rmed 6 wk later. He received pentagastrin as before, but this time was also given a histamine H-2 receptor blocker (zantac). A Meckel's dive rticulum was clearly evident.