世界卫生组织于 2008 年确定，母细胞性浆细胞样树突状细胞肿瘤源自淋巴造血肿瘤系统中的一个独立类别，是一种罕见的恶性血液病。由于其明显的皮肤病学表现，它经常被错误识别，但可能会潜移默化地渗透到骨髓和淋巴结，累及外周血和多种结外组织。乳腺侵犯的情况极为罕见。目前的文件描述了一名患有母细胞性浆细胞样树突状细胞肿瘤的14岁女性患者的病例，其主要症状是乳腺结节，并且其乳房和骨髓/血液同时受累，试图提高临床警惕。

Emanating from a discrete category within the lympho-hematopoietic tumor system, as established by the World Health Organization in 2008, the blastic plasmacytoid dendritic cell neoplasm constitutes an uncommon malignant hematological disorder. It is routinely misidentified on account of its conspicuous dermatological manifestation, yet may insidiously permeate bone marrow and lymph nodes, involving peripheral blood and diverse extra-nodal tissues. Instances of mammary gland encroachment are extraordinarily infrequent. The current document delineates a case of a 14-year-old female patient contending with blastic plasmacytoid dendritic cell neoplasm, whose primary symptom was a mammary nodule, and whose breast and bone marrow/blood involvement were synchronous, in attempt to increase clinical vigilance.