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Updated: Apr 25, 2026

Author Spotlight: Advancing Labor Management Through Electromyometrial Imaging for Understanding Uterine Contractions
Published on: May 26, 2023
Increased MIBG activity in the uterine cervix due to menstruation
Bin Liu1, Hua Yang, Ion Codreanu
1From the *Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China; and †Department of Radiology, Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA.
Abstract:
A 21-year-old woman with history of presacral ganglioneuroblastoma underwent I-MIBG scan for restaging. Planar images revealed increased MIBG activity in the upper pelvis, suggestive of disease recurrence. Complementary SPECT/CT images, however, localized the activity to the uterine cervix. Upon further questioning, it has been established that the patient was menstruating. Subsequent follow-up scans proved normal, confirming the benign etiology of these findings. The case shows that radioactive blood accumulation in the uterine cervix can interfere with MIBG scan interpretation in menstruating patients.
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