目的探讨乳腺腺样囊性癌(adenoid cystic carcinoma of the breast,ACC)的临床病理特征、免疫表型及其鉴别诊断。方法复习18例ACC的临床病理资料,观察肿瘤的组织形态学及免疫表型特点。同时对患者进行随访获取预后信息。结果 18例ACC患...目的探讨乳腺腺样囊性癌(adenoid cystic carcinoma of the breast,ACC)的临床病理特征、免疫表型及其鉴别诊断。方法复习18例ACC的临床病理资料,观察肿瘤的组织形态学及免疫表型特点。同时对患者进行随访获取预后信息。结果 18例ACC患者均为女性,年龄29～80岁。肿瘤大体上多界限清楚,镜下呈浸润性生长,主要由筛状、管状-梁索状、实体和微囊结构组成。肿瘤成分包括腺上皮、肌上皮、基底样细胞和细胞外基质。肿瘤的腺上皮成分表达CK7、CK5/6和CD117,肌上皮成分表达SMA和p63,基底样细胞不同程度表达CK5/6、p63和CD117。随访期内有2例患者肿瘤局部复发,无患者死亡。结论 ACC是一组具有形态学异质性的肿瘤,其腺上皮、肌上皮和基底样细胞成分的免疫表型各有特点,联合运用CK7、CK5/6、p63、SMA和CD117有助于诊断与鉴别诊断。ACC预后良好,具有基底样特征的实体型ACC可能是侵袭性更强的组织学亚型。展开更多
Adenoid cystic carcinoma(ACC) of the breast is a rare special subtype of breast cancer characterized by the presence of a dual cell population of luminal and basaloid cells arranged in specific growth patterns. Most b...Adenoid cystic carcinoma(ACC) of the breast is a rare special subtype of breast cancer characterized by the presence of a dual cell population of luminal and basaloid cells arranged in specific growth patterns. Most breast cancers with triple-negative, basal-like breast features(i.e., tumors that are devoid of estrogen receptor, progesterone receptor, and human epidermal growth factor receptor 2 expression, and express basal cell markers) are generally high-grade tumors with an aggressive clinical course. Conversely, while ACCs also display a triple-negative, basal-like phenotype, they are usually low-grade and exhibit an indolent clinical behavior. Many discoveries regarding the molecular and genetic features of the ACC, including a specific chromosomal translocation t(6;9) that results in a MYB-NFIB fusion gene, have been made in recent years. This comprehensive review provides our experience with ACC of the breast, as well as an overview of clinical, histopathological, and molecular genetic features.展开更多
文摘目的探讨乳腺腺样囊性癌(adenoid cystic carcinoma of the breast,ACC)的临床病理特征、免疫表型及其鉴别诊断。方法复习18例ACC的临床病理资料,观察肿瘤的组织形态学及免疫表型特点。同时对患者进行随访获取预后信息。结果 18例ACC患者均为女性,年龄29～80岁。肿瘤大体上多界限清楚,镜下呈浸润性生长,主要由筛状、管状-梁索状、实体和微囊结构组成。肿瘤成分包括腺上皮、肌上皮、基底样细胞和细胞外基质。肿瘤的腺上皮成分表达CK7、CK5/6和CD117,肌上皮成分表达SMA和p63,基底样细胞不同程度表达CK5/6、p63和CD117。随访期内有2例患者肿瘤局部复发,无患者死亡。结论 ACC是一组具有形态学异质性的肿瘤,其腺上皮、肌上皮和基底样细胞成分的免疫表型各有特点,联合运用CK7、CK5/6、p63、SMA和CD117有助于诊断与鉴别诊断。ACC预后良好,具有基底样特征的实体型ACC可能是侵袭性更强的组织学亚型。
文摘Adenoid cystic carcinoma(ACC) of the breast is a rare special subtype of breast cancer characterized by the presence of a dual cell population of luminal and basaloid cells arranged in specific growth patterns. Most breast cancers with triple-negative, basal-like breast features(i.e., tumors that are devoid of estrogen receptor, progesterone receptor, and human epidermal growth factor receptor 2 expression, and express basal cell markers) are generally high-grade tumors with an aggressive clinical course. Conversely, while ACCs also display a triple-negative, basal-like phenotype, they are usually low-grade and exhibit an indolent clinical behavior. Many discoveries regarding the molecular and genetic features of the ACC, including a specific chromosomal translocation t(6;9) that results in a MYB-NFIB fusion gene, have been made in recent years. This comprehensive review provides our experience with ACC of the breast, as well as an overview of clinical, histopathological, and molecular genetic features.
