[Meckel's diverticulum: the usefulness of 99m Tc pertechnetate scintigraphy].

The paper discusses the utility and appropriateness of instrumental tests (in particular scintigraphic detection) which are regularly used for the preoperative diagnosis of Meckel's diverticulum. The case is reported of a 9-month-old infant affected by severe recidivating attacks of melena in whom the diagnosis of Meckel's diverticulum was delayed by the repeated negativity of instrumental tests.