Objective: To investigate the characteristics of magnetic resonance imaging (MRI) of minimal deviation adenocarcinoma (MDA) of cervix, and improve the diagnostic accuracy of MDA. Methods: The imaging data of eight cases of MDA was retrospectively collected, including tumor size, tumor location, tumor components, signal characteristics, enhancement characteristics and invasive extent. Results: The maximum diameter of tumor was (4.36±1.46) cm. Six tumors were mixed solid and cystic and two were predominantly solid. Six were diffusion limited on diffusion-weighted imaging, and two were not diffusion limited. On multi-phase dynamic contrast-enhanced scan, the enhancement curve of solid components of the tumor showed a plateau-like pattern in three cases and a slow-rising pattern in five cases. Tumors were confined to the cervical canal in three cases, infiltrated to cervical stroma > 1/2 depth in seven cases, and ≤ 1/2 depth in one case. There were four cases of uterine invasion, four cases of vaginal fornix invasion, four cases of bilateral ovarian metastasis and one case of lymph node metastasis. Conclusions: Patients suffering from large amount of vaginal discharge had cervical lesions on MRI showing polycystic and solid component enhancement should be alert to MDA. Deep-seated cervical biopsy and even conization is conducive to early diagnosis, treatment and improvement of prognosis.
目的： 探讨宫颈微偏腺癌(MDA)的磁共振成像(MRI)特点，提高对MDA的影像诊断水平。 方法： 回顾性收集8例MDA的MRI图像资料，对肿瘤的MRI图像进行分析，包括肿瘤大小、肿瘤部位、肿瘤成分、信号特点、强化特点及侵犯范围。 结果： MDA最大径为(4.36±1.46)cm。6例肿瘤表现为囊实性，2例表现为实性。弥散加权成像显示肿瘤实性成分扩散受限6例，扩散受限不明显2例。多期动态增强扫描，肿瘤实性成分强化曲线表现为速升平台型3例，缓升型5例。肿瘤局限于宫颈管3例，侵犯宫颈基质深度>1/2有7例，侵犯宫颈基质深度≤1/2有1例。侵犯宫体4例，侵犯阴道穹窿4例，双侧卵巢转移4例，淋巴结转移1例。 结论： 对宫颈病变MRI表现为多房囊性并实性成分强化，临床症状大量阴道排液的患者，应警惕MDA。宫颈活检宜深取组织，必要时锥切，有利于早期诊断、早期治疗，改善患者预后。.
Keywords: Adenocarcinoma; Cervical neoplasm; Magnetic resonance imaging.