Excision of a Solitary Fibrous Tumor in the Sciatic Notch with Sciatic Nerve Compression – A Rare Clinical Case

Abstract

We present the clinical case of a 41-year-old woman with no relevant personal history. The patient complained of diffuse self-limiting abdominal pain, and we incidentally detected an extra-abdominal, extraperitoneal tumor mass at the level of the right sciatic notch. The abdominal complaints were gone during the initial follow-up, but the patient developed sciatica radiating to the right foot and electric shock-like pain. A computed tomography (CT)-guided biopsy revealed a low-grade mesenchymal neoplasm of the soft tissues with characteristics consistent with a solitary extrapleural fibrous tumor. The pelvis team of the orthopedics department received the patient for surgical excision of the lesion. The procedure occurred with no complications, and we excised the totality of the lesion with tumor-free margins. An anatomopathological examination was compatible with the biopsy assessment. The excision of the lesion resulted in complete resolution of the sciatic nerve compression-related symptoms.

Keywords

sciatic nerve - soft tissue neoplasms - solitary fibrous tumor, pleural

Study carried out at the Department of Orthopedics and Traumatology, Centro Hospitalar Tondela-Viseu, Viseu, Portugal.

Publikationsverlauf

Eingereicht: 02. Juli 2022

Angenommen: 17. August 2022

Artikel online veröffentlicht:
31. Juli 2023

• Referências

• 1 Davanzo B, Emerson RE, Lisy M, Koniaris LG, Kays JK. Solitary fibrous tumor. Transl Gastroenterol Hepatol 2018; 3: 94
• 2 Gold JS, Antonescu CR, Hajdu C. et al. Clinicopathologic correlates of solitary fibrous tumors. Cancer 2002; 94 (04) 1057-1068
• 3 Demicco EG, Park MS, Araujo DM. et al. Solitary fibrous tumor: a clinicopathological study of 110 cases and proposed risk assessment model. Mod Pathol 2012; 25 (09) 1298-1306
• 4 Robinson LA. Solitary fibrous tumor of the pleura. Cancer Contr 2006; 13 (04) 264-269
• 5 Gholami S, Cassidy MR, Kirane A. et al. Size and location are the most important risk factors for malignant behavior in resected solitary fibrous tumors. Ann Surg Oncol 2017; 24 (13) 3865-3871
• 6 Vallat-Decouvelaere AV, Dry SM, Fletcher CD. Atypical and malignant solitary fibrous tumors in extrathoracic locations: evidence of their comparability to intra-thoracic tumors. Am J Surg Pathol 1998; 22 (12) 1501-1511
• 7 Okike N, Bernatz PE, Woolner LB. Localized mesothelioma of the pleura: benign and malignant variants. J Thorac Cardiovasc Surg 1978; 75 (03) 363-372
• 8 Kayani B, Sharma A, Sewell MD. et al. A Review of the Surgical Management of Extrathoracic Solitary Fibrous Tumors. Am J Clin Oncol 2018; 41 (07) 687-694