**3.2 Immunophenotypic features of ovarian low-grade serous carcinomas**

LGSCs show positive immunoreactivity against CK7, PAX8, WT1, ER (oestrogen receptor) and PgR (progesterone receptor). Unlike HGSCs, they display patchy or negative expression for p16, low levels of Ki-67 proliferation index (less than 3%) and wild-type immunoreactivity for p53 [70].
