title: Iatrogenic intraspinal epidermoid tumors.
abstract: Intraspinal epidermoid tumors may be congenital or acquired in origin. Lumbar punctures performed with needles without stylets or with ill-fitting stylets are responsible for the implantation of epidermal fragments into the spinal canal and the resultant iatrogenic intraspinal epidermoid tumors. Pain in the back or lower extremities is a striking clinical feature in these cases. Myelography should be considered for every patient who has pain in the lower extremities or back and who has had previous lumbar punctures.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging / Q000209:etiology*; D002648:Child; D005260:Female; D006801:Humans; D007049:Iatrogenic Disease; D008297:Male; D009192:Myelography; D009339:Needles; D013125:Spinal Neoplasms / Q000000981:diagnostic imaging / Q000209:etiology*; D013129:Spinal Puncture / Q000009:adverse effects*