Spinal Intradural Extramedullary Capillary Hemangioma: MR Imaging Findings
Bo Yoon Choia,
Kee-Hyun Chang
,a,
Gheeyoung Choea,
Moon Hee Hana,
Sun-Won Parka,
In Kyu Yua,
Yang Hee Parka and
Hyun Jip Kima
a From the Departments of Radiology (B.Y.C., K-H.C., M.H.H., S-W.P. I.K.Y.), Pathology (G.C.), and Neurosurgery (K.J.K.), Seoul National University College of Medicine, Institute of Radiation Medicine (K-H.C., M.H.H.), SNUMRC, Department of Radiology (Y.H.P.), National Police Hospital, Seoul, Korea.
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FIG 1. Case 1.
Sagittal T1-weighted (A), T2-weighted (B), and contrast-enhanced T1-weighted (C) MR images show a well-defined solid enhancing mass within the thecal sac at the L1 level. A vertical linear enhancing structure within the thecal sac, as seen on C, is presumably due to a radiculomedullary vein rather than a compressed root with breakdown of nerve-blood barrier. On a photomicrograph of capillary hemangioma (D), the excised tumor consists of lobules of small capillary-sized vessels (C) separated by fibrous septa (S). Note a feeding vessel (F) with larger caliber size and medium-sized branching vessels (B) (H&E, x40).
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FIG 2. Case 2.
Sagittal T1-weighted (A), T2-weighted (B), and contrast-enhanced sagittal (C) and axial (D) T1-weighted MR images demonstrate a densely enhancing extramedullary solid tumor on the right side of the thecal sac at the T5–T6 level, causing compressive myelopathy.
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FIG 3. Case 3.
Unenhanced sagittal (A) and contrast-enhanced sagittal (B) and axial (C) T1-weighted MR images show a markedly enhancing intradural extramedullary mass displacing the spinal cord anteriorly at the T4–T5 level.
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