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[A case of massive bloody stool caused by Meckel diverticulum in which 99mTc-HSA-DTPA SPECT was useful].

A 15-year-old boy was admitted to our hospital because of massive bloody stool. At the age of 11 years, he had two episodes of massive bloody stool, and 99mTcO4- Meckel scintigraphy failed to contribute to the diagnosis. On this admission, 99mTc-HSA-DTPA scintigraphy, especially coronal SPECT clearly showed bleeding site. Operation revealed Meckel diverticulum. We showed the usefulness of coronal SPECT in the evaluation of gastrointestinal bleeding.