Abstract：
Papillary endothelial hyperplasia (PEH) or Masson\'s tumor is a rare benign vascular tumor that usually appears in the soft tissues of the head and neck, trunk and extremities, being extremely rare in the breast. Its diagnosis can be a challenge, especially in the follow-up of patients with previous disease of breast carcinoma. We present the case of a 65-year-old patient, with a history of bilateral breast cancer and reconstruction with implants, who presented a Masson\'s tumor during follow-up. An ultrasound scan was performed, showing a well-circumscribed mass in the left breast, located in the posterior contour of the implant. Subsequently, magnetic resonance imaging (MR) depicted an enhancing tumor, without infiltration of adjacent structures. Finally, the definitive anatomopathological diagnosis was obtained after surgical excision.
摘要：
乳头状内皮增生（PEH）或Masson’s肿瘤是一种罕见的良性血管肿瘤，通常出现在头颈部的软组织，躯干和四肢,在乳房中极为罕见。它的诊断可能是一个挑战，特别是在既往乳腺癌患者的随访中。我们介绍一个65岁的病人,有双侧乳腺癌病史和植入物重建，他在随访期间出现了Masson的肿瘤。进行了超声扫描，左乳房有一个界限分明的肿块，位于植入物的后轮廓中。随后，磁共振成像（MR）描绘了一个增强的肿瘤，没有相邻结构的渗透。最后,手术切除后获得了明确的解剖病理学诊断。
