Diagnosis of almost one third of postoperative VTE in this patient population occurred after discharge. The duration of the prothrombotic stimulus of surgery is not well defined, and patients with malignancy are at high risk of VTE; thromboprophylaxis after discharge should be considered for these patients.

PRBC suppresses mitogen-stimulated human and antigen-stimulated mouse T-cell proliferation by mechanisms independent of arginine depletion. This is a novel mechanism for transfusion-associated immune suppression.

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