Résumé
Introduction: Desmoid tumor, also known as aggressive fibromatosis, resulting from fibroblastic proliferation.
Although it’s a benign lesion, it has a locally invasive potential leading to compressive effects on adjacent vital
structures and a risk of recurrence. Surgical treatment is the main option for resecable tumors whereas primary
radiotherapy could be proposed for unresectable forms.
Case report: We report the case of a 46-year-old woman presenting with an extensive desmoid tumor of the trapezius
muscle. The lesion was deemed unresectable; the patient underwent partial surgical excision followed by adjuvant
radiotherapy. At a one-year follow-up, no recurrence was observed.
Conclusion: This case highlights the importance of a multidisciplinary approach in the management of complex
desmoid tumors. Tumor recurrence has been associated with extra-abdominal location, bone involvement, large
tumor size, and younger patient age.
Key words: Desmoid tumor, Cervical desmoid tumor, Local invasion, Surgical treatment, Targeted therapy, Local
recurrence.
