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A serum multiple monoclonal component (MC) is very rare. We here report 6 patients with 3 MCs. The triple MC was detected in all of them by immunofixation. 2/6 patients did not present hematological or oncological associated disease, while in the remaining 4, Waldenstrom macroglobulinaemia (2 cases), Polycythemia Vera and non-Hodgkin lymphoma were diagnosed. Of the 49 global patients reported in the literature (6 + 43), 64.6% had a lymphoproliferative disorder and only in 3 cases there was no associated disease. Therefore, the detection of such laboratory evidence should propel physicians to a deeper investigation.

A double monoclonal component (MC) detected in the serum and/or urine represents a very rare occurrence (2-6% of monoclonal gammopathies). In this study, we report 34 patients with double serum MCs, focusing on the associated diseases. The diagnosis was made using high-resolution serum protein electrophoresis and immunofixation. Of the 1214 patients with monoclonal gammopathies, 49 had a double MC but only 34 (2.8%) were included in our study. A double MC was associated with hematological malignancies in 20/34 cases. Based on our experience, a double MC is more often associated with other diseases, especially an oncohematological one.

A female patient with non-Hodgkin lymphoma who tested positive for surface antigen of the hepatitis B virus and negative for hepatitis B core antibody experienced a reactivation of occult HBV infection 20 months after rituximab discontinuation despite lamivudine prophylaxis covering the 4 months of rituximab administration and the subsequent 12 months. © 2012 Springer-Verlag.

Background. Thrombotic microangiopathies (TMA) are relatively rare but severe disorders characterised by non-immune haemolytic anaemia, thrombocytopaenia and organ failure. In patients with metastatic cancer, sporadic forms of TMA can be triggered by chemotherapeutic agents or can occur as complication of malignancy itself or of infections. Case report. Hereby, we report a case of a patient diagnosed with metastatic colorectal cancer who experienced an atypical haemolytic-uraemic syndrome (aHUS) during chemotherapy treatment with FOLFOX6 scheme. The use of eculizumab led to prompt recovery of laboratory parameters that was maintained despite treatment discontinuation due to appearance of pneumonia infectious. Additionally, genetic analyses revealed the presence in heterozygosis of CFH gene polymorphisms associated with aHUS. Conclusion. This case emphasises the importance of considering TMA as a possible diagnosis in patients with cancer presenting with haemolytic non-immune mediate anaemia and thrombocytopaenia associated with worsening of renal function. Prompt diagnosis is crucial for the requirement of its specific treatment that can impact on long-term outcome and prognosis.

The authors describe an unusual case (a 79-year-old woman) of secondary extramedullary plasmacytoma (EMP) involving the duodenum. While all the previously reported cases of duodenal involvement by EMP (namely 20 cases) were characterized by the presence of ulcerative masses or ischemic necrotic lesions, in our case EMP led to the unusual finding of several non-polypoid lesions with a depressed central area. The final diagnosis was multiple myeloma IgA lambda, stage II A, with secondary duodenal EMP. To our knowledge this is the first report showing duodenal involvement by EMP with the aspect of multiple non-polypoid lesions.

Imatinib mesylate (IM) therapy leads to a complete cytogenetic response (CCyR) in 75-90% of Chronic Myeloid Leukemia (CML) patients in chronic phase, but only a small percentage of patients achieve complete molecular response (CMR). Very little is known about IM discontinuation. We report the case of a 20-years-old male patient in chronic phase CML who maintained undetectable BCR/ABL mRNA levels, despite IM discontinuation over a period of 15 months after achieving CMR. Our patient reached CCyR and CMR after 3 and 6 months of IM treatment, respectively. We also reviewed the published literature concerning cases of IM discontinuation.

We describe an unusual case (a 79-year-old woman) of secondary extramedullary plasmacytoma (EMP) involving the duodenum. While all the previously reported cases of duodenal involvement by EMP (namely 20 cases) were characterized by the presence of ulcerative masses or ischemic necrotic lesions, in our case EMP led to the unusual finding of several non-polypoid lesions with a depressed central area. The final diagnosis was multiple myeloma IgA lambda, stage II A, with secondary duodenal EMP. To our knowledge this is the first report showing duodenal involvement by EMP with the aspect of multiple non-polypoid lesions.

Aims To evaluate changes in Hepatitis C Virus (HCV) RNA both in plasma and Peripheral Blood Mononuclear Cells (PBMC) in onco-haematological patients. Patients and methods 8 consecutive anti-HCV/HCV RNA-positive patients with onco-haematological diseases (5 with B-cell Non-Hodgkin Lymphoma and 3 with chronic lymphocytic leukaemia) were observed during chemotherapy and after its discontinuation. All were naive to chemotherapy. HCV RNA was sought by Real Time Polymerase Chain Reaction in Light Cycler 1.5 in plasma and PBMC samples collected before, during and after chemotherapy. Results An increase in HCV RNA of at least 1.5 log IU/mL in plasma and 1.1 log IU/ml in PBMC was observed in all 7 patients undergoing Rituximab-based chemotherapy; these patients showed a hepatic flare after discontinuation, life-threatening in one with cirrhosis. Also the 8th patient had cirrhosis, but was treated with Rituximab-sparing chemotherapy and did not show any increase in HCV RNA or a hepatic flare. Conclusion Rituximab-based chemotherapy favours an increase in HCV RNA in onco-haematological patients; this is followed by a hepatic flare, possibly immune-mediated and life threatening in cirrhotic patients.