title: Primary umbilical neoplasm demonstrated on FDG PET/CT.
abstract: Primary umbilical neoplasm is very rare, even though there are scattered case reports about the umbilical metastases known as Sister Mary Joseph's nodules. A 51-year-old man presented with an umbilical mass. Surgical biopsy showed infiltrating neoplasm with glandular and focal papillary architecture. FDG PET/CT demonstrated a focus of abnormal uptake located in the umbilicus, without evidence of a primary tumor elsewhere. Further investigations with EGD, colonoscopy, and cystoscopy were all negative for a neoplasm. The whole-body FDG PET/CT is an ideal imaging modality for evaluation of an umbilical lesion, especially identification or exclusion of a primary neoplasm elsewhere.
authors.affiliation: Department of Radiology, Nuclear Medicine Service, University Hospital, UMDNJ, Newark, NJ 07103, USA. liuyl@umdnj.edu
authors.forename: Yiyan
authors.initials: Y
authors.lastname: Liu
mesh_terms: D019788:Fluorodeoxyglucose F18; D006801:Humans; D008297:Male; D008875:Middle Aged; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals; D058288:Sister Mary Joseph's Nodule / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed; D014472:Umbilicus / Q000000981:diagnostic imaging / Q000473:pathology*; D051598:Whole Body Imaging
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18