Partially intraosseous schwannoma of the distal humerus with increased enhancement after biopsy: Radiologic-pathologic correlation

Shan S. Hansra, MD; Colin N. Brown, MD; Lisa H. Kang, MD; Kurt B. Schaberg, MD; Steven W. Thorpe, MD; Dillon C. Chen, MD

Radiology Case Reports (Apr 2022)

Partially intraosseous schwannoma of the distal humerus with increased enhancement after biopsy: Radiologic-pathologic correlation

Shan S. Hansra, MD,
Colin N. Brown, MD,
Lisa H. Kang, MD,
Kurt B. Schaberg, MD,
Steven W. Thorpe, MD,
Dillon C. Chen, MD

Affiliations

Shan S. Hansra, MD: Department of Radiology, University of California Davis Medical Center, 4860 Y Street, Suite 3100, Sacramento, CA 95817, USA; Corresponding author.
Colin N. Brown, MD: Department of Radiology, University of California Davis Medical Center, 4860 Y Street, Suite 3100, Sacramento, CA 95817, USA
Lisa H. Kang, MD: Department of Radiology, University of California Davis Medical Center, 4860 Y Street, Suite 3100, Sacramento, CA 95817, USA
Kurt B. Schaberg, MD: Department of Pathology, University of California Davis Medical Center, 4400 V Street, Sacramento, CA 95817, USA
Steven W. Thorpe, MD: Department of Orthopedic Surgery, University of California Davis Medical Center, 4860 Y Street, Suite 3100, Sacramento, CA 95817, USA
Dillon C. Chen, MD: Department of Radiology, University of California Davis Medical Center, 4860 Y Street, Suite 3100, Sacramento, CA 95817, USA

Journal volume & issue: Vol. 17, no. 4
pp. 1194 – 1200

Abstract

Read online

Intraosseous schwannomas are rare benign tumors that most often occur at the mandible or sacrum. We present an unusual case of a bilobed schwannoma of the distal humerus with both intraosseous and extraosseous components. The extraosseous component was non-enhancing on initial MRI and enhanced on a subsequent MRI obtained after biopsy. We hypothesize that this change was attributable to decreased intra-tumoral pressure secondary to biopsy-related disruption of the tumor capsule.

Published in Radiology Case Reports

ISSN: 1930-0433 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Medicine: Medicine (General): Medical physics. Medical radiology. Nuclear medicine
Website: https://www.sciencedirect.com/journal/radiology-case-reports

About the journal

Abstract

Keywords