Objective To investigate the correlation between ultrasonographie classification, age and lesion in female. Methods One thousand two hundred and eight patients with 2416 mammary gland were comfired by pathologic findings, including 132 benign lesion and 54 malignancy lesion. According various sonographic appearances in the mammary gland structure and involution grade, the mammary glonds were classified into glandular,fibroglandular and fatty types. A single mammary gland is statistic unit. Results To follow age growth, the proportion of glandular type was decrease, 61.7% in under 30 years of age,31.5% in 30-39 years of age,15.3% in 40-49 years of age,8.6% in 50-59 years of age,4.5 in over 60 years of age. To follow age growth, the proportion of fatty type was higher, 1.6 % in under 30 years of age, 5.80% in 30-39 years of age,5.5% in 40-49 years of age,10.8% in 50-59 years of age,38.6% in over 60 years of age. Before 60 years of age, to follow age growth, the proportion of fibroglandular type was higher, which achieved the peak value (79.2%) in 40-49 years and last to 50-59 years of age (80.6%) ,but it was decrease to 56.9% after 60 years of age. There was significant difference of the proportion in any age(P=0.000).The proportion of the benign lesion no difference in three categories. The proportion of malignancy lesion (6.23%, 16/257 mammary gland)in fatty type was higher than that in fibroglandular type (2.18%,37/1698 mammary gland) which was significant difference(P=0.000). There was no malignancy lesion in glandular type. Conclusions Significant correlation were present between uhrasonographic classification, age and malignancy lesion, no significant correlation were found between uhrasonographic classification, age and benign lesion.%目的 探讨乳腺的超声分型与年龄及乳腺病变的相关性.方法 1208例受检者中经病理证实乳腺良性病变132例,乳腺癌54例.根据乳腺的组织结构和退化过程将乳腺的声像图表现分为腺体型、腺纤维型及脂肪型.以单侧乳腺为统计单位.结果 腺体型的比例随年龄的增长下降,30岁以下组为61.7%,30～39岁组占31.5%,40～49岁组占15.3%,50～59岁组占8.6,60岁以上组占4.5%.脂肪型的比例随年龄的增长上升,30岁以下组为1.6%,30～39岁组占5.8%,40～49岁组占5.5%,50～59岁组占10.8%,60岁以上组占38.6%.60岁以前,腺纤维型的比例随年龄的增长上升,40～49岁组达到高峰(79.2%),持续到50～59岁组(80.6%);60岁后,比例下降(56.9%).超声分型在各年龄段的比例差异有统计学意义(P=0.000).腺体型、腺纤维型及脂肪型中良性病变的发生率差异无统计学意义(P=0.32).脂肪型癌变率(6.23%,16/257侧)明显高于腺纤维型(2.18%,37/1698侧),差异有统计学意义(P=0.000);腺体型中尚未证实有乳腺癌发生.结论 乳腺超声分型与年龄和乳腺癌密切相关,与良性病变无明显的相关性.
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