Description and management of non-metastatic thoracic myxofibrosarcoma: a case report

Myxofibrosarcoma is a soft tissue sarcoma (STS) prevailing in the elderly and is associated with metastasis and mortality. In this case,an ۸۸-year-old male is presented with a progressively enlarging mass in the posterior thorax. The physical examination revealed a solid,irregular, painful mass on palpation. Doppler ultrasonography and high-resolution computed tomography (CT) scan revealed a ۶۰ × ۳۸ mmhypoechoic tumor in the left paraspinal thoracic area with a little vascularity with no adherence and invasion. Radical excisional surgerywas performed. The histopathology findings were in line with myxofibrosarcoma except for CD۳۴. He underwent high dose radiotherapydue to the reported not assessable margins at one side. The patient was asymptomatic and recurrent free in the ۱۲ months follow upassessment. It was the first known case of the non-metastatic intermediate grade of myxofibrosarcoma in the thorax. Due to its deceptivefindings, myxofibrosarcoma should always be considered in the assessment of chest wall tumors.

Keywords:

Myxofibrosarcoma , Thorax , Surgical resection , Soft tissue neoplasms , Radiation therapy