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jkbjts The Journal of the Korean Bone and Joint Tumor Society J Korean Bone Joint Tumor Soc 1226-4962 2233-9841 The Korean Bone and Joint Tumor Society 10.5292/jkbjts.2014.20.2.109 jkbjts-20-109 Case Report Synchronous Development of Schwannoma in the Rectus Abdominis and Lipoma in the Chest: A Case Report KimJu-Oh AnKi-Yong BongHwang-Se LeeKyu-Jung Department of Orthopedic Surgery, Gwangju Veterans Hospital, Gwangju, Korea Correspondence to: Ki-Yong An Department of Orthopedic Surgery, Gwangju Veterans Hospital, 99 Chum-danwolbong-ro, Gwangsan-gu, Gwangju 506-705, Korea TEL: +82-62-602-6162 FAX: +82-62-602-6989 E-mail: mdaky@hanmail.net 01 2014 10 01 2014 20 2 109 112 30102014 19112014 20112014 Copyright © 2014 The Korean Bone and Joint Tumor Society 2014 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

We experienced a case of 63 years old male patient who had synchronous rectus abdominis intramuscular schwannoma and chest wall lipoma. Schwannoma is rare benign tumor which derived from nerve sheath and mainly peripheral nerve of flexor part. The authors report rare synchronous schwannoma and lipoma development.

 rectus abdominis muscle schwannoma lipoma References Das Gupta TK Brasfield RD Tumors of peripheral nerve origin: benign and malignant solitary schwannomas CA Cancer J Clin. 197020 22833 Adani R Baccarani A Guidi E Tarallo L Schwannomas of the upper extremity: diagnosis and treatment Chir Organi Mov. 200892 858 Kehoe NJ Reid RP Semple JC Solitary benign peripheral-nerve tumours. Review of 32 years' experience J Bone Joint Surg Br. 199577 497500 Schultz E Sapan MR McHeffey-Atkinson B Naidich JB Arlen M Case report 872. "Ancient" schwannoma (degenerated neurilemoma) Skeletal Radiol. 199423 5935 Louis DS Peripheral nerve tumors in the upper extremity Hand Clin. 19873 3118 Lee SH Jung HG Lee HK Neurilemoma of trunk and extremities J Korean Bone Joint Tumor Soc. 19964 8893 Bahk WJ RS Kang YK Lee AH Schwannoma of the extremities J Korean Bone Joint Tumor Soc. 20039 14854 Pyun YS Kim SR Joh YR Surgical treatment of the neurilemoma in extremities J Korean Bone Joint Tumor Soc. 19984 8893 Kwon BC Baek GH Chung MS Lee SH Kim HS Oh JH Intramuscular neurilemoma J Bone Joint Surg Br. 200385 7235 Figures

The ultrasonographic finding shows well defined heterogenous echogenic mass.

(A) Transverse CT image shows well-defined low density soft tissue mass on Rt. anterior chest wall. (B) Transverse CT image shows well-defined mass in rectus abdominis muscle.

In the gross finding of the intra-muscular mass in rectus abdominis, a round, pink and well-capsulated mass is shown.

The cross sectional finding of the intra-muscular mass demonstrates multi-septated pattern, scattered hemorrhagic clots and fibrous tissue.

The histologic examination of hematoxyline and eosin stained specimen shows more cellular "Antoni A" pattern (white arrow) with palisading nuclei surrounding pink areas (Verocay bodies), and "Antoni B" pattern (black arrow) with a looser stroma, fewer cells, and myxoid change (×400).