Schwannoma Arising from the Plantar Digital Nerve of the 2nd Toe: A Case Report

Jun-Cheol Choi; Woo-Suk Song; Jeong-Muk Kim; Kye-Won Kwon

doi:10.14193/jkfas.2018.22.4.166

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Choi, Song, Kim, and Kwon: Schwannoma Arising from the Plantar Digital Nerve of the 2nd Toe: A Case Report

Case Report

J Korean Foot Ankle Soc 2018;22(4):166-169.

Published online: 19 January 2018

DOI: https://doi.org/10.14193/jkfas.2018.22.4.166

Schwannoma Arising from the Plantar Digital Nerve of the 2nd Toe: A Case Report

Jun-Cheol Choi, Woo-Suk Song, Jeong-Muk Kim, Kye-Won Kwon^*

^*Departments of Orthopedic Surgery and Pathology, Bundang Jesaeng General Hospital, Seongnam, Korea

^*Pathology, Bundang Jesaeng General Hospital, Seongnam, Korea

Corresponding Author: Woo-Suk Song Department of Orthopedic Surgery, Bundang Jesaeng General Hospital, Daejin Medical Center, 20 Seohyeon-ro 180beon-gil, Bundang-gu, Seongnam 13590, Korea Tel: 82-31-779-0175, Fax: 82-31-779-0176, E-mail: sowoosuk@naver.com ORCID: https://orcid.org/0000-0003-2749-6803

Received 30 May 201819 September 2018 Accepted 9 October 2018

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A schwannoma is a benign tumor that originates from the peripheral nerve sheath. Schwannomas occur most commonly in the head and neck region involving the brachial plexus and the spinal nerves. The lower limbs are less commonly affected. This paper presents a case of a patient with a schwannoma showing atypical localization at the digital nerve of the foot causing neurological symptoms.

Keywords: Foot, Digital nerve, Schwannoma

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Figure 1.

Soft tissue mass at the medial aspect of the 2nd toe of left foot was shown at first presentation.

Figure 2.

The sagittal (A) and coronal (B) sonogram shows an ovoid shaped low echoic mass. (C) Color-coded Doppler scan shows hypervascularity in the mass.

Figure 3.

Intraoperative photograph of mass arising from digital nerve of 2nd toe.

Figure 4.

A well-marginated, encapsulated, 1.8 cm×1.0 cm×1.4 cm sized mass was excised. The cross section of mass appears yellow cut surfaces with vascularity.

Figure 5.

(A) Pathological features show a characteristic biphasic pattern of Antoni A and Antoni B of neurogenic spindle cell proliferation (H&E stain, ×100). (B) Positive result of immunohistochemical staining for S-100 protein (×100).

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