Lipomatous non-saccular limited dorsal myeloschisis

Definition

A rare non-saccular limited dorsal myeloschisis histologically characterized by skin tissue with a jagged depression of squamous epithelium continued to subcutaneous mature adipose tissue with loose connective tissue. GFAP-immunopositive glial cells are embedded in the subcutaneous lipoma. The extradural and intradural stalk have cord-like fibrocollagenous tissue containing adipose tissue, peripheral nerve fibers, clusters of melanocytes, and skeletal muscle fibers.