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Patients with cancer have an increased risk of venous thromboembolism. Upper extremity venous system is a peculiar site, and little is known about the clinical course in patients with cancer. Electronic medical records were searched for patients with cancer with a diagnosis of upper extremity venous thrombosis. Individual patient data were reviewed. Eighty-seven patients were identified, and the median age was 52.4. The most common underlying malignancies were breast (23.0%), colorectal (18.4%), and gastroesophageal (18.4%). Median time from cancer diagnosis to upper extremity venous thromboembolism (UEDVT) was 3.44 months. Subclavian vein was the most common involved site (56.3%) and 54.0% patients had a central venous catheter; 50.6% of patients developed a complication; pulmonary embolism (PE) in 9.2%, superior vena cava (SVC) syndrome in 14.9%, and 26.4% had postthrombotic syndrome. In patients with isolated single vein thrombosis, complications were higher in the subset with internal jugular vein involvement compared to other sites (68.2% vs 52.2%) as were complications in patients with non-catheter-related thrombosis compared to patients with a central venous catheter in place (55% vs 27.7%). Median overall survival from time of cancer and UEDVT diagnoses was 29.6 and 13.25 months, respectively. In conclusion, UEDVT is an uncommon event. Around 50% developed a complication including PE, SVC or postthrombotic syndromes. Larger studies are needed to better identify risks associated with thrombosis and the best therapeutic approach and duration in this unique subset of patients with cancer.

Clinical Course and Complications of Catheter and Non-Catheter-Related Upper Extremity Deep Vein Thrombosis in Patients with Cancer