Abstract
Histiocytoid breast carcinoma (HBC) is a rare variant of breast carcinoma that was first reported by Hoot et al. in 1973 as a breast tumor with poor prognosis and a predilection for metastasis to the eyelid. Diagnostic criteria and the characteristics of this tumor have not been established yet. In some reports, HBC is described as a type of pleomorphic variant of invasive lobular carcinoma. Recently, pathological findings have indicated apocrine differentiation. Since the concept of this disease is not widely recognized, clinical features such as the rate of incidence and prognosis is not clear. We encountered 3 cases of HBC during the last 10 years in our hospital and report the pathological features and clinical course of HBC with bibliographic consideration.
