Solitary Ancient Schwannoma in Upper Arm: A Case Report

Yun-Tae Lee; Chul Kim; Sang-Hoon Park; Jeong Hae Kie

doi:10.5292/jkbjts.2013.19.1.37

Journal List > J Korean Bone Joint Tumor Soc > v.19(1) > 1052026

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Lee, Kim, Park, and Kie: Solitary Ancient Schwannoma in Upper Arm: A Case Report

Original Article

J Korean Bone Joint Tumor Soc 2013;19(1):37-41.

Published online: 10 January 2013

DOI: https://doi.org/10.5292/jkbjts.2013.19.1.37

Solitary Ancient Schwannoma in Upper Arm: A Case Report

Yun-Tae Lee, Chul Kim^*, Sang-Hoon Park, Jeong Hae Kie^†

Department of Orthopedic Surgery, National Health Insurance Service, Ilsan Hospital, Goyang

^*Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul

^†Department of Pathology, National Health Insurance Service, Ilsan Hospital, Goyang, Korea

Correspondence to: Sang-Hoon Park Department of Orthopedic Surgery, National Health Insurance Service, Ilsan Hospital, 100, Ilsan-ro, Ilsandong-gu, Goyang 410-719, Korea TEL: +82-31-900-0540 FAX: +82-31-900-0343 E-mail: orthomania@gmail.com

Received 29 March 2013 Revised 20 May 2013 Accepted 24 May 2013

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Ancient schwannoma is a variant of schwannoma and is characterized slowly growing tumor with degenerative change. And it is reported that schwannoma is relatively rare in extensor area. As a rare cause of solitary ancient schwannoma in extensor area of upper arm, we report it.

Keywords: ancient schwannoma, upper arm

References

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Figure 1.

Plain elbow lateral x-ray shows soft tissue tumor density in extensor area without calcification.

Figure 2.

These are the magnetic resonance image findings of mass. (A) Axial T1-weighted MR image shows inhomogeneous low signal intensity. (B) Axial T-2 weighted MR image shows heterogenous high signal intensity.

Figure 3.

The specimen consists of a pinkish encapsulated cystic mass from the right elbow, measuring 2.5×2×1.7 cm.

Figure 4.

(A) Well encapsulated with diffuse hemorrhage (H&E, ×14). (B) Verocay bodies, which are acellular areas surrounded by nuclear palisades composed of spindle cells (H&E, ×200). (C) Spindle cells show diffuse and strong immunoreactivity for S-100 protein (×200).

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