乳腺以外的恶性肿瘤转移至乳腺的不多见，约占全部乳腺肿瘤的2％，在文献上曾报道13例类癌转移至乳腺。作者报道一例患哮喘和腹泻病人发现乳腺肿块，诊断为类癌转移所致。病人为一76岁妇女，因患哮喘史5年伴发作加剧而急诊住入Arkansas大学急诊科，伴有腹泻史一个月。体检发现 Malignant neoplasms other than mammary glands are rare in the breast, accounting for about 2% of all breast tumours. 13 cases of carcinoid metastases to the mammary gland have been reported in the literature. The authors reported a patient with asthma and diarrhea found a breast mass that was diagnosed as a carcinoid metastasis. The patient, a 76-year-old woman, was admitted to the emergency department of Arkansas University with a history of diarrhea for one month due to an exacerbation of 5 years of history of asthma. Physical examination found