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Suspected metastasis of papillary thyroid cancer

USU Teaching File MUTF - MedPix (2006)

View Article: MedPix Image - MedPix Case

Affiliation: Uniformed Services University

ABSTRACT

Diagnosis: Suspected metastasis of papillary thyroid cancer

History: 25 yo female patient with papillary thyroid cancer s/p thyroidectomy and I-131 treatment with recent “clean” neck/chest MRI but persistently high thyroglobulin levels on followup.

Findings: FDG PET Scan: Focus of moderately intense radiotracer accumulation in R supraclavicular region. Increased uptake in thymus.

Ddx: Metastatic lesion, reactive LAD, granulomatous disease, lymphoma, retention of FDG in mediport.

Exam: Thyroglobulin 18 ng/mL. ( should be undetectable )

No MeSH data available.


Focus of moderately intense radiotracer accumulation in R supraclavicular region. The SUV was reported as 3.8 and grossly corresponded in location to a lesion seen on recent MRI (but not considered abnormal until correlated with abnormal focus on FDG PET).  Increased activity seen in the anterior mediastinum is most consistent with thymic uptake and should not be confused with metastasis in this case. It is often seen as a normal physiologic variant especially in younger patients. Additionally, it can be seen in the setting of thymic hyperplasia or rebound after chemotherapy.
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MPX2371_synpic12578: Focus of moderately intense radiotracer accumulation in R supraclavicular region. The SUV was reported as 3.8 and grossly corresponded in location to a lesion seen on recent MRI (but not considered abnormal until correlated with abnormal focus on FDG PET). Increased activity seen in the anterior mediastinum is most consistent with thymic uptake and should not be confused with metastasis in this case. It is often seen as a normal physiologic variant especially in younger patients. Additionally, it can be seen in the setting of thymic hyperplasia or rebound after chemotherapy.


Suspected metastasis of papillary thyroid cancer

USU Teaching File MUTF - MedPix (2006)

Focus of moderately intense radiotracer accumulation in R supraclavicular region. The SUV was reported as 3.8 and grossly corresponded in location to a lesion seen on recent MRI (but not considered abnormal until correlated with abnormal focus on FDG PET).  Increased activity seen in the anterior mediastinum is most consistent with thymic uptake and should not be confused with metastasis in this case. It is often seen as a normal physiologic variant especially in younger patients. Additionally, it can be seen in the setting of thymic hyperplasia or rebound after chemotherapy.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=MPX2371&req=5

MPX2371_synpic12578: Focus of moderately intense radiotracer accumulation in R supraclavicular region. The SUV was reported as 3.8 and grossly corresponded in location to a lesion seen on recent MRI (but not considered abnormal until correlated with abnormal focus on FDG PET). Increased activity seen in the anterior mediastinum is most consistent with thymic uptake and should not be confused with metastasis in this case. It is often seen as a normal physiologic variant especially in younger patients. Additionally, it can be seen in the setting of thymic hyperplasia or rebound after chemotherapy.

View Article: MedPix Image - MedPix Case

Affiliation: Uniformed Services University

ABSTRACT

Diagnosis: Suspected metastasis of papillary thyroid cancer

History: 25 yo female patient with papillary thyroid cancer s/p thyroidectomy and I-131 treatment with recent “clean” neck/chest MRI but persistently high thyroglobulin levels on followup.

Findings: FDG PET Scan: Focus of moderately intense radiotracer accumulation in R supraclavicular region. Increased uptake in thymus.

Ddx: Metastatic lesion, reactive LAD, granulomatous disease, lymphoma, retention of FDG in mediport.

Exam: Thyroglobulin 18 ng/mL. ( should be undetectable )

No MeSH data available.