18F-FDG PET/CT imaging for a gastrointestinal mantle cell lymphoma with multiple lymphomatous polyposis |
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Authors: | Makoto Saito Masaya Miyazaki Mishie Tanino Shinya Tanaka Kencho Miyashita Koh Izumiyama Akio Mori Tatsuro Irie Masanori Tanaka Masanobu Morioka Eriko Tsukamoto |
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Affiliation: | Makoto Saito;Masaya Miyazaki;Mishie Tanino;Shinya Tanaka;Kencho Miyashita;Koh Izumiyama;Akio Mori;Tatsuro Irie;Masanori Tanaka;Masanobu Morioka;Eriko Tsukamoto;Department of Internal Medicine and Hematology,Aiiku Hospital,Sapporo 064-0804,Japan;Department of Cancer Pathology,Hokkaido University Graduate School of Medicine,Sapporo 060-8638,Japan;Department of Gastroenterology,Aiiku Hospital,Sapporo 064-0804,Japan;Department of Nuclear Medicine,Central CI Clinic,Sapporo 060-0042,Japan; |
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Abstract: | Multiple lymphomatous polyposis (MLP) is an uncommon type of gastrointestinal lymphoma characterized by the presence of multiple polyps along the gastrointestinal tract. Most of this entity is in fact considered the counterpart of gastrointestinal tract involvement for mantle cell lymphoma (MCL). To our knowledge, there have been no reports on [fluorine-18]-fluorodeoxy-glucose (18F-FDG)-positron emission tomography (PET)/computed tomography (CT) imaging for gastrointestinal MCL with MLP. We present the results of 18F-FDG PET/CT imaging in a patient with gastrointestinal tract involvement of MCL showing continuous MLP from the stomach to the rectum and intestinal intussusception. FDG-PET/CT findings were false negative in typical MLP spreading widely over the gastrointestinal tract, but uptake was noted in large lesions with deep infiltration considered atypical as MLP. On FDG-PET/CT imaging, the Ki-67 proliferative index, which is a cell proliferation marker, showed neither correlation with the presence of uptake nor the maximum standardized uptake value. |
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Keywords: | 18F-fluorodeoxy-glucose-positron emission tomography/computed tomography imaging Mantle cell lymphoma Multiple lymphomatous polyposis Gastrointestinal tract Ki-67 proliferative index |
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