Tissue sections from sample No. (1) show dilatations of breast ducts which are the seat of multiple papillary tumors with complex structure. Papillae are covered by ductal and myoepithelial cells. Tumors show fibrotic cores entrapping hyperplastic ductal structures with related focal sclerosis of the ducts. However, no evidence of invasion of surrounding breast tissue in the examined sections. Lining cells show evidence of mild to moderate atypia manifested by focal enlargement of the nuclei and acquisition of prominent nucleoli.
Tissue sections from sample No. (2) show ducts are distended by hyperplastic cells (usual ductal hyperplasia, UDH). Rest of breast tissue shows preserved normal lobular pattern with stromal fibrosis and cystic change. Some breast ducts are dilated with dense periductal infiltration by lymphocytes, plasma cells, macrophages and neutrophils. No evidence of specific granulomas. No evidence of malignancy and excision looks complete.
Excision of breast cyst and hematoma.
Two specimens were received:
Breast lesions, excision:
COMMENT: