title: Intravascular small cell neuroendocrine tumor in the neck.
abstract: A 40-year-old man presented with a painless enlarging right neck mass over several weeks without a history of trauma or infection. Ultrasound, contrast-enhanced CT, and MRI showed a mass in an expanded vein extending into the parotid gland. Blood-stained fine-needle aspiration biopsy demonstrated atypical lymphoid cells, but there was insufficient material for a diagnosis. The mass was intensely avid on 18F-FDG PET/CT and was suggestive of a neoplasm. Excision confirmed a mass within the external jugular vein with areas of invasion through the vessel wall. A diagnosis of small cell neuroendocrine carcinoma was made on histology.
authors: From the Department of Nuclear Medicine, Monash Health, Melbourne, Victoria, Australia.
authors: Chian A
authors: CA
authors: Chang
authors: Ian
authors: I
authors: Jong
authors: Anna
authors: A
authors: Nowicki
authors: Shakher
authors: S
authors: Ramdave
mesh_terms: D000328:Adult; D018278:Carcinoma, Neuroendocrine / Q000000981:diagnostic imaging* / Q000473:pathology; D018288:Carcinoma, Small Cell / Q000000981:diagnostic imaging* / Q000473:pathology; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D064847:Multimodal Imaging; D010307:Parotid Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals; D014057:Tomography, X-Ray Computed
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18