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Extrahepatic Bile Duct and Gall Bladder Dissection in Nine-Day-Old Mouse Neonates
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Gall Bladder Activity on Technetium99m-Ethylenedicysteine Renogram Masquerading as Ectopic Kidney
Sailaja Aka1, J Sai Moulika1, Vs Krishna Mohan1
1Department of Nuclear Medicine and PET CT, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh, India.
Summary
Technetium-99m-ethylenedicysteine (99mTc-EC) is a renal imaging agent. Physicians should note potential gallbladder visualization during 99mTc-EC renograms, which can mimic ectopic kidneys.
Area of Science:
- Nuclear Medicine
- Radiopharmaceutical Development
- Renal Imaging
Background:
- Technetium-99m-ethylenedicysteine (99mTc-EC) is a renal tubular imaging agent.
- It offers high radiochemical purity, stability, and rapid urinary excretion.
- 99mTc-EC provides scintigraphic information comparable to 99mTc-MAG3.
Observation:
- A case involving a 99mTc-EC renogram for a suspected hypoplastic/ectopic right kidney is presented.
- Unexpected visualization of the gallbladder occurred in delayed images.
- This finding highlights a potential diagnostic challenge.
Findings:
- 99mTc-EC demonstrates low hepatobiliary excretion, typically not impacting routine renal imaging.
- Gallbladder visualization can occur, particularly in delayed imaging sequences.
- This can lead to misinterpretation, potentially masquerading as an ectopic kidney.
Implications:
- Clinicians must be aware of the possibility of gallbladder visualization during 99mTc-EC renography.
- Careful interpretation of delayed images is crucial to differentiate gallbladder activity from ectopic renal tissue.
- This case underscores the importance of considering differential diagnoses in nuclear medicine imaging.
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