title: FDG-PET on the trail of an unsuspected primary malignancy in the breast.
abstract: Proper identification of the primary malignancy can radically alter clinical management for the patient's benefit. This is a report of an unsuspected primary breast cancer in a patient being worked up for presumptive lymphoma. Prior investigation of lymphedema in the left lower extremity found widespread lymphadenopathy on computed tomography imaging, leading to initial biopsy revealing adenocarcinoma of unknown primary. F-18 fluorodeoxyglucose PET/computed tomography altered management by localizing an F-18 fluorodeoxyglucose avid breast nodule, directing breast biopsy with specific immunohistochemical analysis for breast cancer lineage in metastatic adenocarcinoma. The patient responded well to breast cancer-targeted chemotherapy.
authors.affiliation: Department of Imaging Sciences, University of Rochester Medical Center, Highland Hospital, 601 Elmwood Avenue, Rochester, NY 14642, USA. keith_dockery@urms.rochester.edu
authors.forename: Keith F
authors.initials: KF
authors.lastname: Dockery
authors.forename: Savita
authors.initials: S
authors.lastname: Puri
authors.forename: Raman
authors.initials: R
authors.lastname: Qazi
authors.forename: Delphine
authors.initials: D
authors.lastname: Davis
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging* / Q000601:surgery; D001706:Biopsy; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000188:drug therapy; D003937:Diagnosis, Differential; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008223:Lymphoma / Q000000981:diagnostic imaging; D008875:Middle Aged; D049268:Positron-Emission Tomography; D011859:Radiography; D019275:Radiopharmaceuticals
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18