INTRODUCTION Bladder sarcomatoid carcinoma is a very rare variant of transitional cell carcinoma. With disputed nomenclature, the tumor has been described previously under a variety of names such as sarcomatoid carcinoma, pseudosarcoma, malignant mixed mesodermal/Müllerian tumor, metaplastic carcinoma and spindle cell carcinoma. This malignancy represents 0.3% of all bladder tumors and has an a...

Abstract Metaplastic breast carcinoma (MpBC) is a rare special histologic subtype of characterized by the presence squamous and/or mesenchymal differentiation. Most MpBCs are triple-negative phenotype and neoadjuvant chemotherapy (NAC) frequently utilized in patients with MpBC. The aim this study was to evaluate response NAC retrospective cohort MpBCs. We identified 44 MpBC treated at our cente...