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Assessment of Volumetric Growth Rates of Spinal Intradural Extramedullary Schwannoma

This study has been completed.
Information provided by (Responsible Party):
Chang-Hyun Lee, Seoul National University Hospital Identifier:
First received: September 15, 2013
Last updated: September 23, 2013
Last verified: September 2013

Spinal intradural schwannoma detected incidentally increased recently. Because there is little knowledge about natural history of spinal schwannoma, there is no consensus of treatment. Our hypothesis is as follows;

  1. Some schwannomas keep growing, the others do not.
  2. Foraminal schwannomas do not usually grow.

The investigators analyzed natural history and characteristics of 56 spinal schwannomas observed initially with accurate and reliable methods. Here the investigators displayed growing pattern and differential point of spinal schwannoma.


Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Retrospective
Official Title: Assessment of Volumetric Growth Rates of Spinal Intradural Extramedullary Schwannoma: A Longitudinal Study of Natural History

Resource links provided by NLM:

Further study details as provided by Seoul National University Hospital:

Primary Outcome Measures:
  • Volumetric growth rate [ Time Frame: 12, 24, 36, 48, 72, 96,120,144 months ]

Biospecimen Retention:   None Retained
The investigators analyzed MR images only

Enrollment: 56
Study Start Date: June 1998
Study Completion Date: August 2013
Primary Completion Date: February 2012 (Final data collection date for primary outcome measure)
Growing schwannoma
Overall volumetric growth rate more over than 10%
Stable schwannoma
Overall volumetric growth rate less than 10%

  Show Detailed Description


Ages Eligible for Study:   20 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
All patients diagnosed of spinal IDEM schwannoma in 2 institutes

Inclusion Criteria:

  • All patients who were diagnosed of spinal IDEM schwannoma by MR imaging and checked follow-up MR imaging not undergoing surgical resection (including radiosurgery).

Exclusion Criteria:

  • 1) surgical resection at the diagnosis; 2) von Recklinghausen' disease (neurofibromatosis); and 3) recurred or residual tumor.
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Please refer to this study by its identifier: NCT01951365

Korea, Republic of
Seoul National University Bundang Hospital
Seongnam, Kyenggi, Korea, Republic of, 110-769
Seoul Natl. Univ. Hospital
Seoul, Korea, Republic of, 110-769
Sponsors and Collaborators
Seoul National University Hospital
Principal Investigator: Chang-Hyun Lee, MD Seoul Natl. Univ. Bundang Hospital
Study Chair: Chun Kee Chung, MD, PhD Seoul National University Hospital
  More Information

Responsible Party: Chang-Hyun Lee, Clinical Professor, Seoul National University Hospital Identifier: NCT01951365     History of Changes
Other Study ID Numbers: SNUNS-spine-01
Study First Received: September 15, 2013
Last Updated: September 23, 2013

Keywords provided by Seoul National University Hospital:
natural history

Additional relevant MeSH terms:
Neuroendocrine Tumors
Neuroectodermal Tumors
Neoplasms, Germ Cell and Embryonal
Neoplasms by Histologic Type
Nerve Sheath Neoplasms
Neoplasms, Nerve Tissue processed this record on May 23, 2017