Potential pitfall of DMSA scintigraphy in patients with ureteral duplication
A 5-wk-old male presented with radiographic findings of a duplicated collecting system. A (/sup 99m/Tc)DMSA scan was requested to evaluate cortical function. Images obtained immediately. postinjection showed activity restricted to the upper poles; in contrast, delayed images at 4 hr showed activity in the bladder and throughout both kidneys. Catheterizing the patient drained the activity from the bladder but had little effect on the refluxed renal activity. The early (/sup 99m/Tc)DMSA images were critical in making the proper interpretation. Technetium-99m DMSA is excreted into the urine and this fact needs to be considered when interpreting scans of patients with possible reflux or obstruction. When DMSA scans are obtained in pediatric patients with possible reflux, catheterization prior to the study and early images prior to the appearance of DMSA in the collecting system are recommended.
- OSTI ID:
- 5124522
- Journal Information:
- J. Nucl. Med.; (United States), Journal Name: J. Nucl. Med.; (United States) Vol. 7; ISSN JNMEA
- Country of Publication:
- United States
- Language:
- English
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62 RADIOLOGY AND NUCLEAR MEDICINE
AGE GROUPS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
CHILDREN
COUNTING TECHNIQUES
DIAGNOSTIC TECHNIQUES
ERRORS
HOURS LIVING RADIOISOTOPES
IMAGES
INFANTS
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KIDNEYS
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATIENTS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SCINTISCANNING
TECHNETIUM 99
TECHNETIUM ISOTOPES
URETERS
URINARY TRACT
YEARS LIVING RADIOISOTOPES