Rare Case of a Malignant Proliferating Trichilemmal Tumor: A Case Report

摘要

Proliferating Trichilemmal tumors (PTT) are rare neoplasms of the external root hair sheath that are largely benign. The potential for PTT to undergo transformation to a Malignant Proliferating Trichilemmal Tumor (MPTT) is unknown, with only about 40 cases of MPTT having ever been reported. We present an exceedingly rare case of a 22-year-old female who presented with an 8 cm mass of her anterior chest which was initially diagnosed as a squamous cell carcinoma and later classified as malignant proliferating trichilemmal tumor. In this case report we discuss the diagnosis, histo-pathological characteristics, and surgical treatment of such tumors. doi: http://dx.doi.org/10.4021/jmc1007e