title: F-18 FDG uptake in a retroperitoneal cystic lymphangioma mimicking malignancy.
abstract: Retroperitoneal lymphangiomas are rare benign cystic tumors and occur because of failure of the developing lymphatic tissue to establish normal communication with the remainder of the lymphatic system. We present a case of retroperitoneal cystic lymphangioma that mimicked malignancy on FDG PET-CT. Inhomogeneous FDG accumulation was found in this multicystic tumor. Histopathologic findings suggested that lymphocytes in the fibrous septa may contribute to FDG uptake of this retroperitoneal cystic lymphangioma.
authors.affiliation: Department of Nuclear Medicine, Changhai Hospital, Shanghai, China.
authors.forename: Aisheng
authors.initials: A
authors.lastname: Dong
authors.forename: Yang
authors.initials: Y
authors.lastname: Wang
authors.forename: Changjing
authors.initials: C
authors.lastname: Zuo
mesh_terms: D000328:Adult; D001692:Biological Transport; D003937:Diagnosis, Differential; D005260:Female; D019788:Fluorodeoxyglucose F18 / Q000378:metabolism*; D006801:Humans; D018191:Lymphangioma, Cystic / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000378:metabolism*; D064847:Multimodal Imaging; D049268:Positron-Emission Tomography; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000378:metabolism*; D014057:Tomography, X-Ray Computed
chemical_list: D019788:Fluorodeoxyglucose F18