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2.
Clin Nucl Med ; 44(7): 594-595, 2019 Jul.
Article in English | MEDLINE | ID: mdl-31107759

ABSTRACT

A 78-year-old man with biochemically recurrent prostate adenocarcinoma (prostate-specific antigen, 2.3 ng/mL) but without detectable disease in the chest, abdomen, or pelvis at conventional CT imaging or in the bones at Tc-MDP scintigraphy underwent F-fluciclovine (anti-1-amino-3-F-fluorocyclobutane-1-carboxylic acid) PET/CT to evaluate for occult recurrent or metastatic disease. Imaging identified intense radiotracer uptake within 3 dural-based lesions along the left cerebral convexity. Subsequent MRI and biopsy confirmed multifocal World Health Organization grade 2 atypical meningiomas. Focal intracranial radiotracer uptake at F-fluciclovine PET/CT may create a diagnostic dilemma as incidental meningiomas can mimic intracranial metastases.


Subject(s)
Brain Neoplasms/diagnostic imaging , Meningeal Neoplasms/diagnostic imaging , Meningioma/diagnostic imaging , Positron Emission Tomography Computed Tomography , Prostatic Neoplasms/pathology , Aged , Brain Neoplasms/secondary , Carboxylic Acids , Cyclobutanes , Diagnosis, Differential , Humans , Male , Prostatic Neoplasms/diagnostic imaging , Radiopharmaceuticals
3.
Clin Nucl Med ; 44(7): 585-586, 2019 Jul.
Article in English | MEDLINE | ID: mdl-30829873

ABSTRACT

A 34-year-old woman with history of bilateral saline implants, invasive ductal carcinoma of the right breast, and suspicious left breast calcifications was referred for left breast lymphoscintigraphy before bilateral mastectomy. A total of 3.2 mCi of Tc-filtered sulfur colloid was administered with 3 subdermal injections in the superior, lateral, and inferior periareolar left breast in the late afternoon preceding the day of surgery. Imaging identified radiotracer uptake within a dense, circular area deep to the injection sites within the left breast, compatible with implant puncture and radiotracer administration within the indwelling breast implant.


Subject(s)
Breast Implants/adverse effects , Breast Neoplasms/diagnostic imaging , Carcinoma, Ductal/diagnostic imaging , Lymphoscintigraphy , Adult , Breast Neoplasms/pathology , Carcinoma, Ductal/pathology , Female , Humans , Radiopharmaceuticals/pharmacokinetics , Technetium Tc 99m Sulfur Colloid/pharmacokinetics
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