1.Cervical Erosion Generally it is pseudo erosion:The covering squamous epithelium is almost always replaced by the columnar epithelium of the endocervix. Less commonly it also is actual erosion Squamous cell metaplasia of columnar epithelium and gland. The stroma is infiltrated by lymphocyte and plasma cells. 1. Cervical Erosion  Generally it is pseudo erosion: The covering squamous epithelium is almost always replaced by the columnar epithelium of the endocervix.  Less commonly it also is actual erosion  Squamous cell metaplasia of columnar epithelium and gland.  The stroma is infiltrated by lymphocyte and plasma cells