J Korean Soc Radiol.  2014 Sep;71(3):136-138. 10.3348/jksr.2014.71.3.136.

Intrascrotal and Extratesticular Schwannoma: A Case Report

• Kim MJ
• Choi SJ
• Shim YS
• Kim HS
• Kim JH
• Choi HY
• Kim H

• KMID: 1736479
• DOI: http://doi.org/10.3348/jksr.2014.71.3.136

Abstract

Schwannoma is a benign tumor arising from Schwann cells of the peripheral nerve sheath. It usually develops in the head, neck, mediastinum or retroperitoneum, but seldomly in the scrotum. Here, the authors report the imaging findings of a patient with a ten year history of a slowly growing scrotal tumor that was histopathologically proven to be schwannoma.

MeSH Terms

Head
Humans
Mediastinum
Neck
Neurilemmoma*
Peripheral Nerves
Schwann Cells
Scrotum
Ultrasonography

Figure

• 

  Fig. 1 A 59-year-old man presented with a slowly growing scrotal tumor of duration 10 years. A. Ultrasonograph showed a 2 × 2 cm sized smooth, round, well-circumscribed, heterogeneous hyperechoic mass within the left scrotum. B. The mass was separated from the left testis (T) and epididymis (E) at longitudinal scan. C. Color Doppler revealed a well vascularized mass. D. The tumor showed a well demarcated solid tumor with multiple dilated hyalinized vessels (H&E, × 40). E. The tumor was comprised of spindle cells with elongated nuclei and fibrillary cytoplasm. Tumor cells showed hypercellular areas with nuclear palisading alternating with hypocellular areas (H&E, × 200). F. Tumor cells were diffusely positive for S-100 protein by immunohistochemical staining (× 100).

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