J Rhinol.  2018 May;25(1):43-46. 10.18787/jr.2018.25.1.43.

A Case of Solitary Fibrous Tumor in the Cheek

Affiliations
  • 1Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Kyungpook National University, Daegu, Korea. blueskyhsj@hanmail.net

Abstract

Solitary fibrous tumor is a rare spindle cell neoplasm of mesenchymal origin that occurs most commonly in the pleura. This tumor can be found in various extrathoracic sites that contain soft tissue. There are few reports of solitary fibrous tumors in the head & neck and only 5 cases of solitary fibrous tumors of the cheek have been reported. A 53-year-old man visited our department complaining of a firm mass in the left cheek. We suspected a schwannoma originating from the infraorbital nerve. The mass was removed via a gingivobuccal approach and was diagnosed as a solitary fibrous tumor.

Keyword

Solitary fibrous tumors; Cheek; Neoplasms

MeSH Terms

Cheek*
Head
Humans
Middle Aged
Neck
Neurilemmoma
Pleura
Solitary Fibrous Tumors*

Figure

  • Fig. 1 Preoperative computed tomography scan. The relatively well-circumscribed, isointense mass (white arrow) is shown at the cheek. A: Axial view. B: Coronal view.

  • Fig. 2 Intraoperative findings. The encapsulated round mass (black arrow) is seen on the left anterior maxilla (A) and the preserved infraorbital nerve (white arrow) is shown (B). Cut section of mass reveals whorled- like, whitish surface (C).

  • Fig. 3 Histopathologic findings. The mass consist of spindle cells with mixed collagen fibers (white arrow) which are arranged in patternless architecture (H&E stain, A: ×100, B: ×200). Immunohistochemical staining with Bcl-2 (C, ×200) and CD34 (D, ×200) show diffuse positivity (black arrow).


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