title: False-positive finding in FDG-PET in a patient with seminoma and sarcoidosis.
abstract: A 33-year-old white man with testicular cancer (seminoma) stage IIIa showed a response in mediastinal lymph node metastases after chemotherapy. However, the tumor markers increase slightly, and therefore an (18)F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography was performed. Multiple FDG avid lesions were found in lymph node, liver and bone. The standardized uptake value (SUV) was discrete increase with a value of 2·8 to 5·7, which is more typical for inflammatory disease than a malignancy. The histological findings in a mediastinal lymph node reported a sarcoidosis, and therefore all lesions were diagnosed as a sarcoidosis. The one-year follow-up showed no further increase in tumor markers and no evidence for metastases.
authors.forename: K
authors.initials: K
authors.lastname: Liepe
mesh_terms: D000328:Adult; D005189:False Positive Reactions; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008297:Male; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals; D012507:Sarcoidosis / Q000000981:diagnostic imaging* / Q000473:pathology; D018239:Seminoma / Q000000981:diagnostic imaging* / Q000473:pathology; D013736:Testicular Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18
keywords: Bone involvement; FDG-PET,; Sarcoidosis,; Seminoma,