目的　分析乳腺肿物细针吸取细胞学 (FNAC)对乳腺恶性肿瘤诊断的敏感性。方法复习乳腺肿物FNAC检查 10 35例 ,与其中手术后获病理组织学诊断 5 0 2例做对照比较。结果　乳腺肿物FNAC对乳腺恶性肿瘤诊断的敏感性为 98 9% ,特异性为 85 7%。细胞学诊断为阳性者 (Ⅳ、Ⅴ级 ) ,术后除 1例 (Ⅳ级 )外 ,均证实为恶性。结论　FNAC诊断乳腺癌较为敏感 Objective To analyze the sensitivity of breast tumor fine needle aspiration cytology (FNAC) in the diagnosis of breast cancer. Methods A total of 10 35 cases of breast tumors were reviewed for FNAC, compared with 502 cases with pathological histological diagnosis. Results The sensitivity of breast neoplasms FNAC to the diagnosis of breast malignancy was 98 9% and the specificity was 85 7%. Cytologically diagnosed positive (IV, V), except one case (IV), all proved to be malignant. Conclusion FNAC is more sensitive to diagnose breast cancer