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13-year-old male with a 3-day history of melena

Learning Objectives:
1. Discuss the use of the Tc-99m pertechnetate scan in the evaluation of melena in the pediatric population.
2. Learn the causes for a false positive and false negative Tc-99m pertechnetate scan.
3. Learn about various pharmacological interventions in a Meckel's scan.

History:
A 13-year-old male presented to the emergency center with a 3-day history of melena. On admission the patient was anemic (hemoglobin = 9.3 g/dL, hematocrit = 26.2%).

Technique:
The patient was injected with 9 mCi (334 MBq) of Tc-99m pertechnetate. Anterior, posterior and lateral views of the abdomen were acquired at 15, 40 and 60 minutes post-injection.

Authors
Primary Authors & Institutions
Primary Author Katie Traylor, DO
Christiana Care Health Care, Newark, DE
Helena R. Balon, MD
William Beaumont Hospital, Royal Oak, MI

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