Jarboe Elke, Layfield Lester J, Collins Brian
Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah 84112, USA.
Acta Cytol. 2010 Sep-Oct;54(5):712-6. doi: 10.1159/000325238.
BACKGROUND Metaplastic carcinomas of the breast are uncommon, and most display marked cellular atypia. Recently, a low grade fibromatosis-like metaplastic carcinoma was found and displayed little nuclear atypia. CASE A 74-year-old woman presented with a 2.5-cm, palpable breast nodule. Mammogram was reported as suspicious for malignancy. Cytologic examination revealed smears of low cellularity with most cells lying in clusters and having a round or oval shape. Rare cells had a "spindle" shape. Nuclear features were low grade. Rare individual cells had retained cytoplasm. Lumpectomy revealed a fibromatosis-like metaplastic carcinoma.
Cytologically, fibromatosis-like metaplastic carcinomas are low grade lesions producing smears of relatively low cellularity. Separation from ductal carcinomas is necessary because fibromatosis-like metaplastic carcinomas rarely metastasize to lymph nodes.
背景 乳腺化生性癌并不常见,且大多数表现出明显的细胞异型性。最近,发现了一种低级别纤维瘤病样化生性癌,其核异型性较小。病例 一名74岁女性,乳房可触及一个2.5厘米的结节。乳腺钼靶检查报告怀疑为恶性。细胞学检查显示涂片细胞数量少,大多数细胞呈簇状,圆形或椭圆形。罕见细胞呈“纺锤形”。核特征为低级别。罕见的单个细胞保留了细胞质。肿块切除术显示为纤维瘤病样化生性癌。
在细胞学上,纤维瘤病样化生性癌是低级别病变,产生的涂片细胞数量相对较少。由于纤维瘤病样化生性癌很少转移至淋巴结,因此有必要与导管癌相鉴别。