Goto Wataru, Nagamori Mizuki, Yamakoshi Yoshihito, Nomura Shinya, Takashima Tsutomu, Otani Hiroshi, Ohira Masaichi
Dept. of Surgery, Ohno Memorial Hospital.
Gan To Kagaku Ryoho. 2021 Dec;48(13):2033-2035.
Primary adenoid cystic carcinoma(ACC)of the breast is a rare type of breast cancer. A 53-year-old woman with a right breast mass was examined at our institute. Ultrasonography showed 12.5×10.3×8.4 mm sized an ill-defined hypoechoic mass at zone C of the right breast. Pathological examination of core needle biopsy revealed atypical cells with solid and cribriform growth pattern. Computed tomography did not reveal lymph node metastases or distant metastases. The preoperative diagnosis was Stage ⅠA(cT1cN0M0, ER/PgR/HER2=-/-/1+)invasive ductal carcinoma or ACC. Surgery consisted of breast-conserving surgery and sentinel node biopsy. Pathological examination of the excised specimen revealed a so- called adenoid cystic pattern, so the final diagnosis was Stage ⅠA(pT1cN0M0, ER/PgR/HER2=-/-/1+)ACC. After 1 year of observation without adjuvant treatment, there has been no recurrence.
原发性乳腺腺样囊性癌（ACC）是一种罕见的乳腺癌类型。我院对一名患有右乳肿块的53岁女性进行了检查。超声检查显示右乳C区有一个大小为12.5×10.3×8.4 mm的边界不清的低回声肿块。粗针穿刺活检的病理检查显示非典型细胞呈实性和筛状生长模式。计算机断层扫描未发现淋巴结转移或远处转移。术前诊断为ⅠA期（cT1cN0M0，ER/PgR/HER2=-/-/1+）浸润性导管癌或ACC。手术包括保乳手术和前哨淋巴结活检。切除标本的病理检查显示为所谓的腺样囊性模式，因此最终诊断为ⅠA期（pT1cN0M0，ER/PgR/HER2=-/-/1+）ACC。在未进行辅助治疗的情况下观察1年后，未出现复发。
