钼靶X线对副乳腺的诊断

目的：探讨腋部副乳腺的X线表现。方法：回顾性分析3年来的3656例女性接受乳腺X线检查的外侧斜位照片，观察有无副乳腺及其X线表现。诊断依据：在腋内有和主乳腺不相连的腺体样结构。结果：3656例中发现腋部副乳腺186例，发生率5％，平均年龄39岁。38％发生于两侧，42％发生于右侧，20％发生于左侧。最大径线平均为3．5cm（右）和3．3cm（左）。在形态上，斑片状最多（35％），其余依次为分支状（26％）、混合状（20％）及团片状（19％）。3例手术病理证实为乳腺组织。结论：腋部副乳腺不少见，有一定的X线表现，可以避免将此种发育异常误认为其他病变。

Mammographic appearance of accessory breast tissue

Objective ：To observe the mammographie appearance of accessory breast tissue in the axilla.Methods：In the past 3 years, 3656 women underwent bilateral screen-film mammography.All of the mediolateral oblique（MLO） films were reviewed retrospectively to look for whether there was accessory breast tissue and what the mammographic features were like.Radiographieally the accessory tissue resembled the main nomal breast glandular tissue but was separated from it.Results：Of the 3656 cases, accessory breast tissue in the axilla was detected in 186 cases.The prevalence was 5%.The age ranged from 17 to 70 years （mean 39 years）.38% of them were found in the bilateral axilla,42% only in the right,and 20% only in the left. The dimensions on the right ranged from 0.7 to 8.0 em（mean 3.5 cm）, and that on the left ranged from 1.0 to 7.0 cm （mean 3.3 cm）.There were four types among the accessory breast tissue：patchy type was the most（35%）,then the branched type（26%）,mixed type（20%）,and mass-like type（19%）.3 cases were proved by pathology.Concluslon：It is important that the radiologist should be familiar with the mammographie appearance of accessory breast tissue in the axilla for distinguishing from other pathological changes.