An unusual pattern in serum protein electrophoresis to take in mind: A case report.

Here we described a case of an asymptomatic 73 years-old female patient in geriatric routine consultation, whose laboratory testing showed hyperproteinemia with accompanying hyperglobulinemia. A diagnosis of BGUS was made only after a correlation among SPEP, densitometry tracing and IFE results was established, evidencing a second peak, that was less evident and not reported at first. These biclonal conditions are of very low incidence in the clinical laboratory, requiring the laboratory professional to have particular skills for their identification.

Diagnosing and treating mixed phenotype acute leukemia: a multicenter 10-year experience in México.

Mixed phenotype acute leukemia (MPAL) in adults represents nearly 2 to 5 % of all acute leukemia cases. There are two large studies throughout the world and only case reports and small series have been reported in Latin America. This study retrospectively analyses the clinical characteristics and survival of 27 patients with MPAL evaluated in three medical institutions of Mexico.

Anaplastic lymphoma kinase-positive large B-cell lymphoma: a case report with particular immunophenotypic features.

Anaplastic lymphoma kinase-positive large B-cell lymphoma is a rare and aggressive B-cell lymphoma mostly associated with t(2:17) involving the clathrin gene at 17q23 and the anaplastic lymphoma kinase gene at 2p23. The characteristic immunophenotype includes a granular cytoplasmic anaplastic lymphoma kinase expression, CD20 negativity and the presence of plasma cell markers (CD138, VS38c, and CD38). We report a case with aberrant immunophenotype (CD138-, VS38c-, CD38+/-) and discuss the utility of other immunohistochemical markers in establishing a terminal B-cell differentiation.