原发性输卵管癌的影像学特征

Imaging characteristics of primary fallopian tube carcinoma

目的分析原发性输卵管癌(PFTC)超声、CT、MRI及PET/CT的影像学特征。方法回顾性分析32例经手术病理证实为PFTC患者的影像学图像及临床资料。结果 32例PFTC患者中,单侧31例,双侧1例。伴对侧输卵管积水1例,伴同侧皮样囊肿1例,2例卵巢转移,1例结肠转移。超声表现为附件区梭形实质性低回声肿物(n=16)、不均质团块样肿物(n=4)、"腊肠型"囊性肿物(n=7)。CT表现为附件区实性肿块7例,囊肿块7例,囊实混合性肿块2例。MRI表现为类圆形等T1稍长T2信号(n=2)或稍短T1稍长T2信号结节(n=2)。PET/CT表现为附件区软组织密度肿块影(n=1)或附件区囊实混合密度(n=2)。结论超声可有效发现PFTC附件区肿物,并区别囊实性;CT、MRI及PET/CT有助于PFTC的定位。

Objective To investigate the imaging characteristics of ultrasonographic, CT, MRI and PET/CT of primary fallopian tube carcinoma （PFTC）. Methods Imaging appearances and clinical data of 32 patients with PFTC confirmed by pathology after surgical operation were retrospectively analyzed. Results In 32 patients, 31 patients had unilateral adnexal masses, and 1 patient had bilateral masses. There was 1 patient with hydrosalpinx, 1 with teratoma, 2 with metastases in ovary and 1 with metastases in colon. Ultrasonography displayed spindle mass with substantial low echo （n= 16）, predom- inantly inhomogeneous solid mass （n= 4） and sausage-shaped solid adnexal mass （n~ 7）. CT showed solid adnexal mass in 7 patients, cystic adnexal mass in 7 patients, cystic-solid mass in 2 patients. MRI showed 2 patients were equal signal on TlWI and slightly-higher signal on T2WI, 2 patients were slightly-higher signal on both TlWI and T2WI. On PET/CT, the imaging characteristics of PFTC were soft tissue density solid adnexal mass （n= 1） and cystic-solid adnexal mass （n= 1）. Conclusion Ultrasound can effectively demonstrate primary solid masses in adnexal regions of PFTCand beneficial in distinguishing between cystic and solid masses~ CT, MRI and PET/CT are helpful to locate the PFTC.