This edition includes new information on issues in the diagnosis of solid papillary carcinoma; molecular studies of microglandular adenosis; carcinoma with basal phenotype; the e-cadherin immunostain in the diagnosis of lobular carcinoma; use of immunostains to distinguish between papilloma and low-grade papillary carcinoma; and use of myoepithelial immunostains in the diagnosis of microinvasive carcinoma. The book also includes new data on treatment and prognosis.