Multiple myeloma presenting with a fever of unknown origin and development of thrombotic thrombocytopenic purpura post-bortezomib.
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Multiple myeloma rarely presents with a fever of unknown origin and diagnosis may be delayed. We describe a case of myeloma presenting in this way with raised serum-free light chains and TP53 deletion on cytogenetics. The patient developed thrombotic thrombocytopenia purpura (TTP) following bortezomib therapy but recovered spontaneously and was successfully re-challenged. We believe this is only the second case to describe this phenomenon post-bortezomib and the first to rechallenge the patient successfully without further recurrence of TTP. Possible mechanisms for this successful rechallenge are discussed.