Abstract

Background: Technetium-99m pentavalent dimercaptosuccinic acid [99mTc(V)-DMSA] scintigraphy exhibits a crucial role in the preoperative assessment of residual or recurrent medullary thyroid carcinoma (MTC). Case Presentation: 99mTc(V)-DMSA scintigraphy was performed in a patient with histopathologically proven MTC expressing a high level of calcitonin using a locally formulated kit. Marked uptake of the radiotracer was observed by the locally metastatic foci. The same patient was then subjected to somatostatin receptor scintigraphy (Octreoscan) and the results were found comparable. Both the scanning was completed within 24 hours with good quality images. Conclusion: In-house preparation from renal DMSA kit, better resolution, good stability, and easy procedure with minimum cost make 99mTc(V)-DMSA a good imaging agent for visualization of MTC in the centers where 99mTc-ethylenediamine-N, N-diacetic acid/6-hydrazinonicotamide-3-carboxylic acid-Tyr3-octreotide is not available.

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