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Thymoma complicated by deep vein thrombosis of the arm

Our patient was referred urgently with an anterior neck lump. The patient was otherwise well with no history of smoking or radiation exposure. Initial investigation with ultrasound-guided aspiration cytology was suspicious and atypical for thyroid carcinoma. A CT scan demonstrated the neck lump was part of a 64×56×54 mm retrosternal mass infiltrating the superior vena cava and atrium (figure 1).



Figure 1 
CT scan demonstrating deep extension of retrosternal lesion into the anterior mediastinum, where a more focal 64×56×54 mm mass is seen. The mass is partly cystic, centred towards the left of the anterior …