Desmoid Tumor of the Neck – Case Study

Abstract

Desmoid tumor or deep fibromatosis (ICD O – 8821/1) is rare neoplasm from fibroblasts and myofibroblasts constituting approx. 3% of all soft tissue tumors.The morbidity is estimated at 2.4 to 4.5 cases per 1 million annually.The abdominal cavity is affected in the majority of cases,while only 7–15% of cases are diagnosed with head and neck tumors.The autors present a case of 41-year old woman in whom the final histopathological diagnosis was extremely difficult.The clinical presentation,imaging work-up and tumor location in the present case report were suggestive of the parotid gland as the primary location of the lesion. Contrast-enchanced CT,sonography and fine needle aspiration biopsy were sugestive of a mixed tumor (tumor mixtus), in MRI suggested that other benign and malignant lesions should also be considered. Histopathological examination of the removed tumor was suggestive of nodular fasciitis.It was suggested that a reference center should be consulted in order to rule out spindle cell sarcoma with low-grade malignancy potential. Result of the examination after consultation-desmoid fibromatosis. The treatment of desmoid tumor includes a surgery, adjuvant radiotherapy and systemic treatment including hormone therapy, chemotherapy and non-steroidal anti-inflammatory drugs.