title: Intradiploic leptomeningeal cyst in an adult: role of percutaneous contrast injection in dural defect demonstration.
abstract: Leptomeningeal cysts are commonly seen in children usually following trauma and associated with bulging leptomeninges at the site of fracture. Intradiploic leptomeningeal cyst is an important differential for an expansile lytic lesion in the bony calvarium especially in a patient with a previous history of trauma. Here we present a case of intradiploic leptomeningeal cyst and describe the usefulness of retrograde cisternogram by CT-guided direct percutaneous cyst puncture where a CT cisternogram after intrathecal contrast injection could not demonstrate the dural defect and communication of the subarachnoid space with the intradiploic leptomeningeal cyst.
authors.affiliation: Department of Radiodiagnosis, Sanjay Gandhi Postgraduate Institute of Medical Science, Lucknow, UP, 226014, India. singhvivek79@rediffmail.com.
authors.forename: Vivek
authors.initials: V
authors.lastname: Singh
authors.affiliation: Department of Radiodiagnosis, Sanjay Gandhi Postgraduate Institute of Medical Science, Lucknow, UP, 226014, India.
authors.forename: Gurucharan S
authors.initials: GS
authors.lastname: Shetty
authors.affiliation: Department of Radiodiagnosis, Sanjay Gandhi Postgraduate Institute of Medical Science, Lucknow, UP, 226014, India.
authors.forename: Suprava
authors.initials: S
authors.lastname: Naik
authors.affiliation: Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Science, Lucknow, 226014, India.
authors.forename: S
authors.initials: S
authors.lastname: Behari
authors.affiliation: Department of Radiodiagnosis, Sanjay Gandhi Postgraduate Institute of Medical Science, Lucknow, UP, 226014, India.
authors.forename: R V
authors.initials: RV
authors.lastname: Phadke
mesh_terms: D000279:Administration, Cutaneous; D016080:Arachnoid Cysts / Q000175:diagnosis*; D003287:Contrast Media / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged
chemical_list: D003287:Contrast Media
keywords: Aneurismal bone cyst; Cisternogram; Dermoid; Dural defect; Intradiploic leptomeningeal cyst