Stensen Duct Relapse of Diffuse Large B-Cell Lymphoma: An Unusual Pattern Detected With 18F-FDG PET/CT.

F-FDG PET/CT is now an established modality for staging and restaging high-grade lymphomas, including diffuse large B-cell lymphoma. We here present the case of a 51-year-old woman successfully treated for diffuse large B-cell lymphoma. Follow-up F-FDG PET/CT demonstrated an unusual site of relapse involving left Stensen (parotid) duct, which was confirmed with cytology. By identifying such unusual sites of lymphomatous involvement, F-FDG PET/CT can have significant bearing on patient management.