Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China.
Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China.
Clin Radiol. 2020 Jun;75(6):457-465. doi: 10.1016/j.crad.2020.02.002. Epub 2020 Mar 9.
To investigate typical features of primary fallopian tube carcinoma (PFTC) on magnetic resonance imaging (MRI) to differentiate it from epithelial ovarian cancer (EOC).
Twenty-one patients with PFTC and 35 patients with EOC were included. The clinical and pathological features of patients were analysed. The following MRI features were compared: maximal diameter, laterality, configuration, shape, signal intensity, enhancement pattern, hydrosalpinx, intrauterine fluid accumulation, rim enhancement, and apparent diffusion coefficient (ADC) values within the solid components of tumours in PFTC and EOC.
The maximal diameter of PFTC was 4.50±2.10 cm. The shapes of PFTC were mural papillary nodules (2/21, 10%), sausage-like (8/21, 38%), nodular (3/21, 14%), or irregular (8/21, 38%). Enhancement was mild (10/21, 48%), moderate (8/21, 38%), or marked (3/21, 14%). Associated hydrosalpinx and intrauterine fluid accumulation were observed in six (29%) and three (10%) cases, respectively. Significant differences between PFTC and EOC were found in the International Federation of Gynecology and Obstetrics (FIGO) stage, maximal diameter, shape, enhancement pattern, hydrosalpinx, and intrauterine fluid accumulation (p=0.002, 0.004<0.001, <0.001, and 0.048, respectively). Rim enhancement was more prevalent, thicker, and exhibited higher continuity in PFTC than in EOC (p=0.002, <0.001, and 0.002, respectively).
Rim enhancement is a useful feature in distinguishing PFTC from EOC, particularly when continuous or seen in combination with a sausage-like shape, hydrosalpinx or intrauterine fluid accumulation. When the tumour is associated with other MRI signs, for example, (i) hydrosalpinx with mural papillary nodules or sausage-like shape with mild-to-moderate enhancement of solid components, (ii) hydrosalpinx, or (iii) intrauterine fluid accumulation, the diagnosis of PFTC should be considered.
探讨原发性输卵管癌（PFTC）在磁共振成像（MRI）上的典型特征，以将其与上皮性卵巢癌（EOC）区分开来。
纳入 21 例 PFTC 患者和 35 例 EOC 患者。分析患者的临床和病理特征。比较 PFTC 和 EOC 以下 MRI 特征：最大直径、侧别、形态、形状、信号强度、增强模式、输卵管积水、宫腔积液、边缘增强和肿瘤实性成分的表观扩散系数（ADC）值。
PFTC 的最大直径为 4.50±2.10cm。PFTC 的形状为壁结节状乳头（2/21，10%）、香肠状（8/21，38%）、结节状（3/21，14%）或不规则状（8/21，38%）。增强程度为轻度（10/21，48%）、中度（8/21，38%）或明显（3/21，14%）。6 例（29%）和 3 例（10%）分别观察到合并输卵管积水和宫腔积液。PFTC 和 EOC 在国际妇产科联合会（FIGO）分期、最大直径、形状、增强模式、输卵管积水和宫腔积液方面存在显著差异（p=0.002、0.004<0.001、<0.001 和 0.048）。PFTC 的边缘增强更为普遍、更厚且连续性更高（p=0.002、<0.001 和 0.002）。
边缘增强是鉴别 PFTC 和 EOC 的一个有用特征，特别是当边缘增强呈连续状或呈香肠状、输卵管积水或宫腔积液时。当肿瘤伴有其他 MRI 征象时，例如（i）壁结节状乳头或香肠状伴实性成分轻-中度增强，（ii）输卵管积水，或（iii）宫腔积液，应考虑 PFTC 的诊断。
