Plasmablastic myeloma transformation of light-chain multiple myeloma.

Plasmablastic myeloma (PBM) is an uncommon and aggressive morphologic variant of multiple myeloma (MM). The neoplastic immature cells exhibit diverse morphology, posing a diagnostic challenge. The diagnostic criteria for PBM include the identification of ≥ 2% plasmablasts in the bone marrow aspirate.

Albumin adsorption onto surfaces of urine collection and analysis containers.

Background: Adsorption of albumin onto urine collection and analysis containers may cause falsely low concentrations.

Methods: We added (125)I-labeled human serum albumin to urine and to phosphate buffered solutions, incubated them with 22 plastic container materials and measured adsorption by liquid scintillation counting.

Results: Adsorption of urine albumin (UA) at 5-6 mg/l was <0.