Solitary Fibrous Tumor of the Lower Lip; A Rare Case Report

Robab Noormohammadi; Milad Khoadei; Mohammad Borna Amirian; Roya Belbas Belbas; Sona Rafieyan

doi:10.18502/fid.v22i50.20632

Robab Noormohammadi Oral Medicine Department, School of Dentistry, Zanjan University of Medical Science, Zanjan, Iran
Milad Khoadei Private Practice, Zanjan, Iran
Mohammad Borna Amirian Biochemistry department, Zanjan Islamic Azad University, Zanjan, Iran
Roya Belbas Belbas Private Practice, Zanjan, Iran
Sona Rafieyan Department of Oral and Maxillofacial Pathology, Tabriz Azad Islamic University of medical sciences, Tabriz, Iran

DOI: https://doi.org/10.18502/fid.v22i50.20632

Keywords: Solitary Fibrous Tumors; Lip; Pathology; Neoplasms

Abstract

Solitary Fibrous Tumor (SFT) is a rare benign neoplasm primarily associated with the pleura. However, it has also been identified in diverse locations, including the skin, deep soft tissues, genitourinary system, gastrointestinal tract, and the head and neck region, including the oral cavity. There is no gender predilection for SFT of the oral cavity and it can occur at any age. We herein present a case of SFT on the lower lip of a 19-year-old male patient and describe our diagnostic approach. The histopathological findings showed typical features of SFT with immunoexpression of CD34, CD99, BCL2, and STAT6, along with low expression of Ki67 in 10% of the tumor cells.