A case of upper left extremity deep vein thrombosis with right side middle lobe syndrome.

Upper extremity deep vein thrombosis is an extremely important clinical entity with potential for considerable morbidity and mortality. A 64-year-old woman was brought to the emergency department with complaints of left upper limb and neck swelling for 4 days. Ultrasonography of the neck showed thrombosis of the left internal jugular and other surrounding veins associated with local lymphadenopathy. Computed tomography (CT) of the neck also showed a hypodense 0.6 cm × 0.8 cm × 1.2 cm lesion in the right middle lobe bronchus, causing complete occlusion and collapse of the right middle lobe of the lung. Fine-needle aspiration cytology and a lymph node biopsy showed nongranulomatous lymphadenitis. The patient was started on fondaparinux 10 mg subcutaneously once daily. She was discharged on oral anticoagulants for 6 months. Repeat CT scan after 6 months showed dissolution of the lesion and reexpansion of the right lung.