Figure 1

CT pulmonary angiography (CTPA) of a 49-year-old female patient with a myxofibrosarcoma of the right pulmonary artery. Suspicious imaging features were already present in the primary imaging (A, C). However, the patient was treated conservatively for suspected pulmonary embolism. A follow-up exam was acquired three month later and demonstrated massive disease progression with tumor expansion beyond the vessel wall and local lymph node metastases (B, D)