From the Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Mumbai, India.
Clin Nucl Med. 2014 Jan;39(1):84-6. doi: 10.1097/RLU.0b013e31829960f6.
Mesenteric lymphomas are commonly seen as bulky hypermetabolic nodal masses on F-FDG PET/CT. Very rarely, these are seen as mesenteric haziness due to localized hyperattenuation of fat, known as "misty mesentery", which morphological imaging-wise has other differentials as well. We report a unique imaging finding of segmental misty mesentery with hypermetabolic mesenteric nodes on FDG PET/CT in a patient who was kept on observation due to inconclusive biopsy, which on follow-up imaging progressed to extensive lymphomatous involvement. Thus, in retrospect, this imaging feature on baseline PET/CT was diagnostic for mesenteric lymphoma.
肠系膜淋巴瘤在 F-FDG PET/CT 上通常表现为大体积、高代谢的结节性肿块。非常罕见的情况下，由于局部脂肪高衰减，肠系膜表现为模糊状，称为“模糊肠系膜”，在形态学成像上也有其他不同的鉴别诊断。我们报告了一例 FDG PET/CT 上的独特影像学表现，即节段性模糊肠系膜伴高代谢性肠系膜淋巴结，由于活检结果不确定，该患者一直处于观察状态，随访影像学检查显示广泛的淋巴瘤累及。因此，回顾性分析，基线 PET/CT 上的这种影像学特征对肠系膜淋巴瘤具有诊断意义。
