title: Delay in diagnosis of right atrial myxoma.
abstract: Clinical, echocardiographic, and nuclear angiographic findings in a 51-year-old woman who presented with a history of dyspnea are discussed. Initial echocardiography revealed no abnormality. However, a subsequent radionuclide angiogram revealed a filling defect on the right side of the heart. This represented a right atrial myxoma. Radionuclide angiography can provide a useful noninvasive tool in the diagnosis of intracardiac tumors when echocardiography has not been helpful.
mesh_terms: D003937:Diagnosis, Differential; D004452:Echocardiography; D005260:Female; D006325:Heart Atria / Q000601:surgery; D006338:Heart Neoplasms / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D008875:Middle Aged; D009232:Myxoma / Q000175:diagnosis* / Q000601:surgery; D013667:Technetium
chemical_list: D013667:Technetium