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Cerebellar metastasis of papillary thyroid carcinoma detected with somatostatin receptor scintigraphy
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Abstract
Introduction: Distant metastases of papillary thyroid carcinoma (PTC) may lack the ability to concentrate radioiodine. In such cases, positive somatostatin receptor scintigraphy might be useful in demonstrating the expression of somatostatin receptors that are potential therapeutic targets. To date, only a few cerebellar metastases from PTC have been reported in the literature.
Patient findings: We present an 82-year-old female, in whom an asymptomatic cerebellar metastasis from PTC was diagnosed by means of Tc-99m-EDDA/HYNIC-TOC scintigraphy four years after the initial diagnosis. She was previously treated with total thyroidectomy and regional lymph node dissection, followed by three cycles of radioiodine therapy. Despite persistently elevated thyroglobulin, no specific radioiodine accumulation was found in the whole body post-treatment scan. Tc-99m-EDDA/HYNIC-TOC scintiscan revealed foci of increased tracer uptake in the lungs, cervical lymph nodes, and a single focus in the head. Thus, therapy with octreotide LAR was initiated. The patient died four months later due to disseminated PTC.
Summary: In this paper, a patient with asymptomatic previously unknown non-iodine avid cerebellar metastasis of PTC diagnosed by means of scintigraphy using somatostatin analogue Tc-99m-EDDA/HYNIC-TOC is reported.
Conclusions: Somatostatin receptor scintigraphy might be useful in the visualisation of non-iodine avid PTC metastases and demonstrating the expression of somatostatin receptors that are potential therapeutic targets.
Abstract
Introduction: Distant metastases of papillary thyroid carcinoma (PTC) may lack the ability to concentrate radioiodine. In such cases, positive somatostatin receptor scintigraphy might be useful in demonstrating the expression of somatostatin receptors that are potential therapeutic targets. To date, only a few cerebellar metastases from PTC have been reported in the literature.
Patient findings: We present an 82-year-old female, in whom an asymptomatic cerebellar metastasis from PTC was diagnosed by means of Tc-99m-EDDA/HYNIC-TOC scintigraphy four years after the initial diagnosis. She was previously treated with total thyroidectomy and regional lymph node dissection, followed by three cycles of radioiodine therapy. Despite persistently elevated thyroglobulin, no specific radioiodine accumulation was found in the whole body post-treatment scan. Tc-99m-EDDA/HYNIC-TOC scintiscan revealed foci of increased tracer uptake in the lungs, cervical lymph nodes, and a single focus in the head. Thus, therapy with octreotide LAR was initiated. The patient died four months later due to disseminated PTC.
Summary: In this paper, a patient with asymptomatic previously unknown non-iodine avid cerebellar metastasis of PTC diagnosed by means of scintigraphy using somatostatin analogue Tc-99m-EDDA/HYNIC-TOC is reported.
Conclusions: Somatostatin receptor scintigraphy might be useful in the visualisation of non-iodine avid PTC metastases and demonstrating the expression of somatostatin receptors that are potential therapeutic targets.
Keywords
differentiated thyroid carcinoma, papillary thyroid carcinoma, cerebellar metastases, somatostatin receptors, somatostatin receptor scintigraphy
About this articleTitle
Cerebellar metastasis of papillary thyroid carcinoma detected with somatostatin receptor scintigraphy
Journal
Issue
Article type
Case report
Pages
24-27
Published online
2017-12-21
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2585
Article views/downloads
1008
DOI
Pubmed
Bibliographic record
Endokrynol Pol 2018;69(1):24-27.
Keywords
differentiated thyroid carcinoma
papillary thyroid carcinoma
cerebellar metastases
somatostatin receptors
somatostatin receptor scintigraphy
Authors
Rafał Czepczyński
Anna Wyszomirska
Maria Gryczyńska
Ewelina Szczepanek-Parulska
Marek Ruchała
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