恶性组织细胞增生症可发生在任何年龄。本组13例中最小为2(1/2)月,最大者为67岁。临床症状无特殊性,容易误诊,13例中多见不规则发热。本文突出介绍以乳房肿块出现的罕见病例。应用根治性手术或化学药物治疗可获得较长时期存活率。 Malignant histiocytosis can occur at any age. The group of 13 cases, the smallest 2 (1/2) months, the largest was 67 years old. No specific clinical symptoms, easy to misdiagnosis, more common in 13 cases of irregular fever. This article highlights the rare cases of breast lumps. Long-term survival can be achieved with radical surgery or chemotherapy.