Abstract

Case 1: A 34-year-old previously healthy male office manager was admitted with acute onset of heaviness, pain, and functional impairment of his right arm. The arm was cyanotic and massively swollen (Figure 1). For the past weeks, he reported transient paresthesia of his right arm during overhead activities and was unable to perform repetitive or strenuous arm exercise. He had a fracture of the right clavicle after a ski accident 5 years previously. The fracture was managed conservatively. There was no personal or family history of thrombosis. Conventional phlebography confirmed axillary and subclavian vein thrombosis (Figure 2, top), and treatment with intravenous unfractionated heparin was started. Figure 1. Clinical presentation of case 1 with massive swelling and cyanosis of the right arm (left). One day after pharmacomechanical thrombolysis, signs of thrombosis have markedly improved (right). Figure 2. Baseline digital subtraction venogram from case 1 with extensive filling defects in the axillary subclavian veins (top). Control venogram after 15 hours of pharmacomechanical thrombectomy confirmed resolution of filling defects and restored venous flow (middle). Positional venography obtained during abduction of the right arm confirmed the venous thoracic outlet syndrome with residual stenosis of the subclavian vein at the costoclavicular junction (white arrow, bottom). Case 2: A 55-year-old man with lung cancer presented with swelling, heaviness, and pain in his left arm 1 week after completion of chemotherapy administered via a left-sided indwelling central venous catheter. Axillary and subclavian vein thrombosis was confirmed by ultrasonography. Low-molecular-weight heparin (LMWH) was initiated, and the catheter was removed 3 days later because it was no longer functional. At 1 week, pain and functional impairment had not improved, and the circumference of the left upper arm had increased by 2 cm. Case 3: A 65-year-old woman with metastatic ovarian cancer presented with swelling of the face and both arms, headache, …

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