Resumen

MORENO RAMIREZ, Hermes; VILLASENOR MORENO, Julio César  y  VAZQUEZ MALDONADO, Adriana Beatriz. Progression of plasmacytoma of bone to multiple mieloma and a case report. Rev Cubana Invest Bioméd [online]. 2015, vol.34, n.3. ISSN 0864-0300.

Solitary plasmacytoma of bone and multiple myeloma are two monoclonal gammapathies that belong to the same group of neoplastic alterations of plasma cells. The plasmacytoma occasionally precedes myeloma. The sternal location of plasmocytoma is rare. This is the case of a man aged 75 years, with moderate pain in the dorsal region and short of breath when making medium efforts. The axial tomography showed osteolytic lesions in the lower third of sternum with radiological characteristics of a solitary plasmocytoma of bone in addition to lesions in the 5th left rib and scapulas. The bone marrow biopsy revealed 45% medullary plasmocytosis whereas immunoelectrophoresis showed Ig G concentration of 4210 mg/dl. Multiple myeloma was diagnosed and an analysis was made on the alterations leading to this result, with the purpose of bearing in mind the possibility of progression to a multiple myeloma in those patients with plasmocytoma of bone. The following case was presented in order to improve the quality of life of patients through timely diagnosis of plasmocytoma of bone and to avoid progression to multiple myeloma, thus achieving higher survival rates.

Palabras clave : sterna plasmocytoma; myeloma; osteolytic bone tumor.

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