68Ga-PSMA: a One-stop Shop in Radioactive Iodine Refractory Thyroid Cancer?

We report a case of a 47-year-old female known with metastatic papillary thyroid cancer. Her treatment history included total thyroidectomy and 3 previous radio ablations with a cumulative dose of 950 mCi of131I. On follow-up, her thyroglobulin levels had demonstrated a rising trend (from 3789.0 to 4240.0 ug/L) despite a123I whole-body scan demonstrating a reduction in tracer avid lesions. She was suspected of having radio-resistant disease. The patient underwent both18F-FDG and68Ga-PSMA PET/CT imaging with both scans demonstrating congruent lesions however with far greater intensity on the68Ga-PSMA study.
Source: Nuclear Medicine and Molecular Imaging - Category: Nuclear Medicine Source Type: research

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AbstractPurposeThe aim of our study was to compare the efficacy of thyroid remnant ablation using low (1.1  GBq) and intermediate-high radioiodine (RAI) activity (1.85–3.7 GBq) in low-risk differentiated thyroid carcinoma (DTC) and to evaluate the staging role of the whole body scan (WBS) in detection extrathyroidal disease.Materials and methodsWe retrospectively included 277 patients who underwent total thyroidectomy and RAI for low-risk DTC and divided them in two groups according to RAI activity at ablation: group 1 (n = 174) treated with low activity (1.1 GBq), and group 2 (n&th...
Source: Endocrine - Category: Endocrinology Source Type: research
Authors: Chacón González M, Ibáñez Muñoz A, Rodríguez Vicente L, Ortega Renedo I, Rozanova Klecheva M, Yagüe Hernando A, Lizuaín Abadia ME, Jiménez Del Rio B Abstract The case is presented of 78 year-old who consulted due to decreased visual acuity in right eye for several months. Indirect ophthalmoscopy revealed an orange-yellow coloured choroidal mass at the posterior pole, without retinal detachment. Computed tomography showed a thyroid mass in the isthmus, as well as multiple pulmonary nodules and metastatic foci. The findings of transbronchial lung b...
Source: Archivos de la Sociedad Espanola de Oftalmologia - Category: Opthalmology Tags: Arch Soc Esp Oftalmol Source Type: research
ConclusionTreatment decisions must be individualized, and depend on the presence of systemic disease. Selected patients may benefit from resection of metastases, and PET scan may be useful to identify patients who will benefit from resection.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
In conclusion, the present case is an extremely rare occurrence of simultaneous multiple RDMs from PTC as the initial presentation.
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
Background: Patients treated for intermediate- or high-risk differentiated thyroid carcinoma (DTC) and Thyroglobulin (TG) elevation during follow-up, require a diagnostic whole-body scan (DWBS) and if positive, 131I treatment. This approach can lead to a delay in treatment and increased costs. The purpose of this study is to compare the oncologic outcomes associated to administration of direct therapy with 131I at first biochemical recurrence.Methods: Retrospective cohort study of patients with intermediate- or high-risk DTC treated with total thyroidectomy, 131I ablation and who developed TG elevation during follow-up, be...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
Conclusion: In papillary thyroid carcinoma I-131 post-ablation SPECT/CT scan detects cervical lymphadenopathy and predicts relapse by NM stage more accurately than WBS.
Source: In Vivo - Category: Research Authors: Tags: Clinical Studies Source Type: research
Conclusion: Our findings, along with other reports, suggest that MKIs is an effective neoadjuvant therapy and should be considered as a therapeutic strategy for unresectable grossly locally invasive thyroid carcinomas.
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
Authors: Lee EK, Kim SM, Kim BH, Kim MJ, Lim DJ, Kim MH, Shin DY, Kang HC, Ahn BC, Kim SW, Ahn HY, Park YJ Abstract BACKGROUND: Lenvatinib, a tyrosine kinase inhibitor (TKI) recently approved for treating radioactive iodine-refractory differentiated thyroid cancer, has been shown to delay disease progression and provide meaningful benefit for overall survival. However, there is no predictive marker for response to lenvatinib before initiating treatment. We comprehensively analyzed clinical and radiological parameters to predict response to lenvatinib using lesion-based assessments. METHODS: Medical records were...
Source: Thyroid : official journal of the American Thyroid Association - Category: Endocrinology Tags: Thyroid Source Type: research
We report a unique case of nodal MCC in head and neck lesions with an unknown primary. A 70-year-old woman was admitted to our department with a right submandibular mass. Fine needle aspiration biopsy was performed and indicated malignancy. F-18-fluorodeoxyglucose positron emission tomography (PET) demonstrated abnormal accumulation in the right submandibular lymph node, right palatine tonsil, and right thyroid gland. For diagnostics and treatment, bilateral selective neck lymph node dissection, right tonsillectomy, and right thyroidectomy were performed. Histopathological examination revealed that most parts of the subman...
Source: Acta Med Okayama - Category: Universities & Medical Training Authors: Tags: Yonago Acta Med Source Type: research
ConclusionsPhysicians should be aware of the possibility of the emergence of primary malignancies in patients with a history of papillary thyroid carcinoma, especially lung cancer as it is a common site of papillary thyroid carcinoma metastases. Using appropriate diagnostic evaluations in order to choose the best therapeutic option is of utmost importance.
Source: Journal of Medical Case Reports - Category: General Medicine Source Type: research
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