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  • Title: Synchronous second primary neoplasms detected by initial staging F-18 FDG PET/CT examination in patients with non-Hodgkin lymphoma.
    Author: Papajík T, Mysliveček M, Sedová Z, Buriánková E, Procházka V, Raida L, Kubová Z, Neoral C, Starostka D, Mikula P, Melichar B, Kučerová L, Tichý M, Indrák K.
    Journal: Clin Nucl Med; 2011 Jul; 36(7):509-12. PubMed ID: 21637049.
    Abstract:
    PURPOSE OF THE REPORT: Cases of synchronous non-Hodgkin lymphoma (NHL) and second primary carcinoma in previously untreated immunocompetent patients are relatively rare. The aim of this part of our prospective study was to a revealed 2-F-18 fluoro-2-deoxy-D-glucose (F-18 FDG) positron emission tomography (PET)-positive lesion in an extranodal organ suggestive of second primary neoplasm in newly diagnosed NHL patients. MATERIALS AND METHODS: A total of 209 patients with NHL underwent initial staging F-18 FDG PET/computed tomography (CT). The finding was assessed by a radiologist, nuclear medicine physician, and hematologist. In 6 suspicious cases (2.9%) of second neoplasm, the decision was made to perform further investigations before lymphoma therapy. RESULTS: Two patients were diagnosed with colorectal carcinoma, 1 with esophageal adenocarcinoma, 1 with invasive ductal breast carcinoma, 1 with medullary thyroid carcinoma, and 1 with squamous cell lung carcinoma. In 5 of the 6 patients, the second solid tumor was completely asymptomatic and revealed only by F-18 FDG PET/CT examination. CONCLUSIONS: We conclude that in patients with NHL, appropriate imaging, clinical, and histologic analysis of organ lesions detected by F-18 FDG PET/CT will occasionally demonstrate significant synchronous neoplasms.
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