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肺内结外NK/T细胞淋巴瘤是非霍奇金淋巴瘤的一种少见类型,约占2%~10%[1]。该病好发于中青年,男女比例约为1∶4,在欧洲和北美洲国家十分罕见,但在亚洲和南美洲国家相对较多,其中又以鼻型(包括发生于鼻腔、鼻咽及上呼吸道)最常见,占比80%以上,而鼻外型相对较少,常发生于皮肤、胃肠道等。原发于肺内的结外NK/T细胞淋巴瘤尤其罕见,且诊断标准[2]十分严格:①病变局限于脏层胸膜、肺和局部区域淋巴结;②排除纵隔淋巴瘤浸润或转移至肺内;③无恶性淋巴瘤或白血病病史;④确诊患者3个月内无肺外同种淋巴瘤出现。笔者对所报道的病例从病史、临床化验及检查结果等方面进行综合分析,并查阅文献,对患者18F-FDG及68Ga-1, 4, 7, 10-四氮杂十二烷-N, N, N, N-四乙酸-D-苯丙氨酸1-酪氨酸3-苏氨酸-8-奥曲肽(68Ga-1, 4, 7, 10-tetraazacyclododecane-N, N, N, N-tetraacetic acid-D-Phe1-Tyr3-Thr8-octreotide,68Ga-DOTATATE )PET/CT两种功能显像进行深入分析,旨在提高广大核医学医师对该病的认识,为今后临床工作提供有价值的参考。
以肌无力为首发症状的肺内结外NK/T细胞淋巴瘤PET/CT显像一例
Primary pulmonary extranodal natural killer/T cell lymphoma with myasthenia as the initial sign: a case report of PET/CT imaging
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摘要: 笔者报道了一例以四肢乏力为首发症状入院的病例,分别从患者的临床症状、相关实验室检查、CT、18F-FDG及68Ga-1, 4, 7, 10-四氮杂十二烷-N, N, N, N-四乙酸-D-苯丙氨酸1-酪氨酸3-苏氨酸-8-奥曲肽PET/CT影像学诊断等方面分析了该病例的特点,并对原发性肺内结外NK/T细胞淋巴瘤的影像学诊断方法进行了文献回顾。由于该病发生率低,笔者意在提示影像医师在遇到类似病例时,应把握整体,避免先入为主的思维,从而提高诊断水平。Abstract: Limb weakness was presented as the first symptom. This work analyzes the characteristics of the patient based on clinical symptoms, related laboratory tests, CT, and 18F-FDG and 68Ga-1, 4, 7, 10-tetraazacyclododecane-N, N, N, N-tetraacetic acid-D-Phe1-Tyr3-Thr8-octreotide (68Ga-DOTATATE) PET/CT and reviewed the imaging diagnosis methods of primary pulmonary NK/T cell lymphoma. Considering the low incidence of the disease, this study suggests that imaging physicians should understand the whole situation when encountering similar cases and avoid preconceived thinking to improve the diagnostic level.
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