Phosphohistone‐<scp>H3</scp> and Ki‐67 immunostaining in cutaneous pilar leiomyoma and leiomyosarcoma (atypical intradermal smooth muscle neoplasm)

Abstract

PHH3 immunostain can simplify counting of mitotic figures in cutaneous smooth muscle neoplasms, especially those with many pyknotic nuclei, and may help to reduce interobserver variability. Ki-67 staining may also be of help in establishing a diagnosis of LMS.