title: Malignant Peritoneal Mesothelioma Masquerades as Peritoneal Metastasis on (18)F-FDG PET/CT Scans; a Rare Diagnosis that Should Not Be Missed.
abstract: Malignant peritoneal mesothelioma (MPM) is a rare but fatal tumor. The clinical presentations and imaging findings are nonspecific and resemble various diseases, including peritoneal metastasis. Imaging findings of MPH on (18)F-(18)F-fluorodeoxyglucose ((18)F-FDG) positron emission tomography (PET)/computed tomography (CT) are diverse and not well described. We report the two cases of biopsy-proven MPH using (18)F-FDG PET/CT. In our cases, interesting disease patterns-including MPH arising from visceral peritoneal lining of kidney that suffer from polycystic disease and from the parietal peritoneum beneath the appendectomy scar-were presented. One case showed classical metastases localized within the abdominal cavity; while the other case exhibited the rare pattern of extensive multi-organ metastases. By knowing the possible variations and diagnostic pitfalls of (18)F-FDG PET/CT findings in MPM, more accurate interpretation of such mysterious cancer is attainable.
authors.affiliation: Department of Nuclear Medicine, Seoul National University Hospital, 101 Daehangno, Jongro-gu Seoul, 110-744 Korea ; Division of Nuclear Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Apichaya
authors.initials: A
authors.lastname: Claimon
authors.affiliation: Department of Nuclear Medicine, Seoul National University Hospital, 101 Daehangno, Jongro-gu Seoul, 110-744 Korea.
authors.forename: Ji-In
authors.initials: JI
authors.lastname: Bang
authors.affiliation: Department of Nuclear Medicine, Seoul National University Hospital, 101 Daehangno, Jongro-gu Seoul, 110-744 Korea.
authors.forename: Gi Jeong
authors.initials: GJ
authors.lastname: Cheon
authors.affiliation: Molecular Medicine and Biopharmaceutical Sciences, WCU Graduate School of Convergence Science and Technology, Seoul National University College of Medicine, Seoul, Korea ; Department of Radiological Sciences, University of California, Irvine, CA USA.
authors.forename: Euishin Edmund
authors.initials: EE
authors.lastname: Kim
authors.affiliation: Department of Nuclear Medicine, Seoul National University Hospital, 101 Daehangno, Jongro-gu Seoul, 110-744 Korea ; Molecular Medicine and Biopharmaceutical Sciences, WCU Graduate School of Convergence Science and Technology, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Dong Soo
authors.initials: DS
authors.lastname: Lee
keywords: F-18 fluorodeoxyglucose; Mesothelioma; Peritoneum; Positron emission tomography