title: Incidental Acinic Cell Carcinoma of the Parotid Gland Discordant on 123I-MIBG, 111In-Octreotide, and 18F-FDG PET/CT in a Patient With Neuroendocrine Tumor of the Cecum.
abstract: A 61-year-old woman diagnosed with a metastatic well-differentiated neuroendocrine tumor of the cecum was referred for radioisotope therapy. Although her metastatic neuroendocrine tumor was positive on both (123)I-MIBG and (111)In-octreotide, there was a left parotid mass that was octreotide avid but MIBG negative. Further investigation also showed discordance on (18)F-FDG PET/CT and excision of the mass revealed an incidental acinic cell carcinoma of the parotid gland. Somatostatin analog imaging and PRRT (peptide receptor radionuclide therapy) may have a role in the management of acinic cell carcinoma.
authors: From the Department of Diagnostic Imaging, Cross Cancer Institute, Edmonton, AB, Canada.
authors: William
authors: W
authors: Makis
authors: Karey
authors: K
authors: McCann
authors: Alexander J B
authors: AJ
authors: McEwan
mesh_terms: D019797:3-Iodobenzylguanidine; D018267:Carcinoma, Acinar Cell / Q000000981:diagnostic imaging*; D002430:Cecal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D033162:Incidental Findings; D008875:Middle Aged; D064847:Multimodal Imaging; D009362:Neoplasm Metastasis; D018358:Neuroendocrine Tumors / Q000000981:diagnostic imaging* / Q000473:pathology; D015282:Octreotide / Q000031:analogs & derivatives; D010307:Parotid Neoplasms / Q000000981:diagnostic imaging*; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals; D014057:Tomography, X-Ray Computed
chemical_list: D019275:Radiopharmaceuticals; C094279:indium-111-octreotide; D019788:Fluorodeoxyglucose F18; D019797:3-Iodobenzylguanidine; D015282:Octreotide