Hamartoma of the Oral Cavity with Ectopic Meningothelial Elements in Infants: A Rare Entity with Report of Two Cases

摘要

A slightly polypoid well-circumscribed submucosal mass without ulceration (HE, × 40). Overlying squamous epithelium without atypia and bland submucosal proliferation surrounding arterioles (HE, × 100). Irregular interconnecting spaces are lined by flattened bland cells without nuclear pleomorphism (HE, × 200). Nuclear expression for progesterone receptor (PR, × 200)