title: Lung mass appearing as a dilated left ventricle on Tc-99m tetrofosmin myocardial perfusion scintigraphy.
abstract: Tc-99m tetrofosmin is a common tracer used in myocardial perfusion scintigraphy. Several benign and malignant tumors also take up tetrofosmin. We present a case of a 60-year-old woman with a history of a left lung mass awaiting resection. The patient was referred for a myocardial perfusion scan for preoperative risk assessment. The myocardial perfusion scan revealed a large cavitated lesion mimicking a dilated left ventricle and the CT scan revealed a large mass in the left lung with central necrosis displacing the heart and mediastinum. The patient underwent thoracotomy with resection of the mass and the histology confirmed atypical carcinoid. This case highlights noncardiac uptake of Tc-99m tetrofosmin in an atypical carcinoid.
authors.affiliation: Department of Nuclear Medicine, Guy's and St Thomas' Hospital NHS Foundation Trust, London, United Kingdom. gopinath.gnanasegaran@gstt.nhs.uk
authors.forename: Gopinath
authors.initials: G
authors.lastname: Gnanasegaran
authors.forename: Robert
authors.initials: R
authors.lastname: Williams
authors.forename: Emma
authors.initials: E
authors.lastname: Mclean
authors.forename: Rachel
authors.initials: R
authors.lastname: O' Connell
authors.forename: Thomas O
authors.initials: TO
authors.lastname: Nunan
authors.forename: Michael J
authors.initials: MJ
authors.lastname: O'Doherty
mesh_terms: D002276:Carcinoid Tumor / Q000000981:diagnostic imaging / Q000601:surgery; D005260:Female; D006352:Heart Ventricles / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D008875:Middle Aged; D055414:Myocardial Perfusion Imaging; D009943:Organophosphorus Compounds; D015609:Organotechnetium Compounds; D014057:Tomography, X-Ray Computed
chemical_list: D009943:Organophosphorus Compounds; D015609:Organotechnetium Compounds; C078700:technetium tc-99m tetrofosmin