A case of rudimentary meningocele.

A 2-year-old girl had an alopecic, atrophied macule on the midline of the occipital area. X-ray and CT scan of the scalp revealed no underlying bone defect. Histologically, the whole dermis and subcutis showed dense, hyalinized collagen bundles intermingled with cuboidal, epithelioid cells that surrounded pseudovascular spaces or gathered in clusters. These flattened or cuboidal cells were positive for anti-vimentin antibody; some of them were also positive for an anti-epithelial membrane antigen antibody, but negative for antifactor VIII-related antigen and Ulex europaeus I lectin.