Benameur Yassir, Touil Sanâa, Sahel Omar Ait, Oueriagli Salah Nabih, Biyi Abdelhamid, Doudouh Abderrahim
Department of Nuclear Medicine, Mohammed V Military Teaching Hospital, Mohammed V University of Rabat, Morocco.
Asia Ocean J Nucl Med Biol. 2020 Spring;8(2):149-152. doi: 10.22038/AOJNMB.2020.44276.1296.
Peritoneal lymphomatosis is an extremely rare presentation of lymphoma. Due to its relative low frequency, it receives much less attention than peritoneal carcinomatosis. The challenge is to differentiate between lymphomatosis and carcinomatosis, as well as peritoneal tuberculosis or other pathologic entities within the peritoneal cavity based essentially on radiologic features. F-FDG PET/CT is the main imaging modality for staging and monitoring response to treatment in lymphoma. Peritoneal lymphomatosis is most often associated to aggressive histological subtypes of high-grade lymphoma which are reputed high FDG uptake. We report two cases of Burkitt's lymphoma and diffuse large B cell lymphoma (DLBCL), with intense FDG uptake involving the entire peritoneum and decreased FDG activity of the rest of the body including brain and kidneys, giving it an appearance of "peritoneal super scan", follow up FDG PET/CT showed the disappearance of the peritoneal lymphomatosis and the reappearance of cerebral and urinary activity synonym of complete metabolic response.
腹膜淋巴瘤是淋巴瘤一种极其罕见的表现形式。由于其相对少见，它受到的关注远少于腹膜癌。其挑战在于主要依据放射学特征来鉴别淋巴瘤与癌，以及腹膜结核或腹腔内的其他病理实体。F-FDG PET/CT是淋巴瘤分期及监测治疗反应的主要影像学检查方法。腹膜淋巴瘤最常与侵袭性组织学亚型的高级别淋巴瘤相关，这些淋巴瘤被认为具有高FDG摄取。我们报告两例伯基特淋巴瘤和弥漫性大B细胞淋巴瘤（DLBCL），FDG摄取强烈，累及整个腹膜，而身体其他部位包括脑和肾的FDG活性降低，呈现出“腹膜超级扫描”的表现，随访的FDG PET/CT显示腹膜淋巴瘤消失，脑和泌尿系统活性重新出现，提示完全代谢缓解。
