Department of Imaging, A.C.Camargo Cancer Center, São Paulo, Brazil Rua Professor Antônio Prudente, 211, Liberdade, São Paulo-SP.
Department of Imaging, Hospital do Mandaqui, São Paulo, Brazil R. Voluntários da Pátria, 4301 - Santana, São Paulo-SP.
Br J Radiol. 2019 Nov;92(1103):20190517. doi: 10.1259/bjr.20190517. Epub 2019 Jul 25.
Intramammary lymph nodes (IMLN) are one of the most common benign findings at screening mammography. However, abnormal IMLN features, such as diminished or absent hilum, thickened cortex, not circumscribed margins, increased size or interval change, warrants additional follow-up or pathologic analysis to exclude malignancy. Some benign inflammatory conditions may be associated with imaging-detected suspected abnormal IMLN, such as reactive hyperplasia and silicone-induced lymphadenopathy. In patients with known breast cancer, IMLN are a potential site of locoregional spread, which can change the prognosis and management. In some cases, initial breast carcinomas can also mimic IMLN. Breast radiologists must also be aware of the typical and atypical characteristics of IMLN to suggest further investigation when it is necessary.
乳腺内淋巴结（IMLN）是乳腺筛查钼靶片中最常见的良性表现之一。然而，异常的 IMLN 特征，如门消失或不明显、皮质增厚、边界不清晰、大小增加或间隔改变等，需要进一步随访或病理分析以排除恶性肿瘤。一些良性炎症性疾病可能与影像学检测到的疑似异常 IMLN 有关，如反应性增生和硅酮引起的淋巴结病。在已知患有乳腺癌的患者中，IMLN 是局部区域扩散的潜在部位，这可能改变预后和管理。在某些情况下，初始乳腺癌也可能类似于 IMLN。乳腺放射科医生还必须了解 IMLN 的典型和非典型特征，以便在必要时提出进一步的检查建议。
