title: Endocystography in cystic neurilemmoma.
abstract: During myelographic evaluation for a suspected herniated disc, a cystic neurilemmoma in the lower lumbar region was inadvertently punctured and a contrast study of the interior of the lesion resulted. The possibility of puncture of a cystic mass should be considered in the differential diagnosis when a complete block is encountered above and below the site of needle puncutre, and particularly when the contrast column demonstrates a relatively smooth biconcave appearance.
mesh_terms: D003560:Cysts / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000000981:diagnostic imaging; D008875:Middle Aged; D009192:Myelography; D009442:Neurilemmoma / Q000000981:diagnostic imaging*; D011677:Punctures; D013120:Spinal Cord Neoplasms / Q000000981:diagnostic imaging*