Cervical Desmoid-Type Fibromatosis in an Adolescent: A Rare Imaging Case

Desmoid-type fibromatosis is a locally aggressive tumor characterized by a well-differentiated proliferation and a high risk of recurrence. It is classified into extra-abdominal, abdominal, and intra-abdominal subtypes based on its location. Although rare, cervical desmoid fibromatosis is an even less common manifestation. Furthermore, its radiological features are seldom reported in the literature, making differentiation from other cervical masses particularly challenging. We report an unusual case of a 16-year-old female patient, who presented with a progressively enlarging, painless mass on the left side of her neck over the past six months. Further imaging and histopathological evaluation were performed, leading to the diagnosis of cervical desmoid fibromatosis.