Surface membrane IgM multiple myeloma preceded by myelodysplastic syndrome in an elderly patient

Authors

Keywords:

myelodysplastic syndromes, plasma cells, immunoglobulin m, multiple myeloma, immunophenotyping, immunohistochemistry.

Abstract

Introduction: Multiple Myeloma with expression of surface immunoglobulin M is a rare entity, whose cause is unknown, and is characterized by a high rate of genetic abnormalities in plasma cells or their precursors.

Objective: To determining the clinical characteristics and their associations with the immunophenotypic expression of surface immunoglobulin M and CD20 immunohistochemistry in a patient affected by Multiple Myeloma preceded by Myelodysplastic syndrome.

Case presentation: A 68-year-old female patient is admitted to the Clinical Hematology Service. At the time of diagnosis, she presented pallor, thrombocytopenia, hypercalcemia, and bone lesions. Initially, flow cytometry detected aberrant patterns for neutrophilic granulocytes, monocytes, and the erythroid series suggestive of myelodysplastic syndrome. Subsequently, an 18% increase in plasma cells was observed in the bone marrow smear, exhibiting a lymphocyte-like morphology. A pathological population of 6% of the total cellularity was reported, showing positivity for CD38, CD117 and surface immunoglobulin M, negativity for CD19 and CD45, a phenotype consistent with abnormal plasma cells. Additionally, immunohistochemical results reported diffuse CD20 staining in bone marrow biopsy. The patient managed to recover after an autologous hematopoietic stem cell transplant.

Conclusion: The results found highlight the importance of diagnosing and monitoring single cases that allow timely treatment of the patient.

 

Author Biographies

Stalin Tello Vera, Hospital Nacional “Almanzor Aguinaga Asenjo”. Chiclayo

Médico patólogo clínico especializado en laboratorio de biología molecular,histocompatibilidad y citometría de flujo,actualmente jefe del servicio de patología clínica del hospital nacional Almanzor Aguinaga Asenjo.

Carlos Sánchez Neyra, EsSalud

Médico Hematólogo egresado de la universidad Pedro Ruiz Gallo de Lambayeque, Perú.Actualmente desempeñándose como jefe del servicio de Hematología del hospital nacional Almanzor Aguinaga Asenjo.

Andrés Galindo Céspedes, EsSalud

Biólogo ,especialista en Biología Molecular.Actualmente asistente en el laboratorio de Biología Molecular,citometría de flujo,histocompatibilidad y citogenética del Hospital Nacional Almanzor Aguinaga Asenjo.

Published

2022-07-29

How to Cite

1.
Tello Vera S, Sánchez Neyra C, Galindo Céspedes A. Surface membrane IgM multiple myeloma preceded by myelodysplastic syndrome in an elderly patient. Rev Cubana Hematol Inmunol Hemoter [Internet]. 2022 Jul. 29 [cited 2025 Feb. 2];38(3). Available from: https://revhematologia.sld.cu/index.php/hih/article/view/1650

Issue

Section

Presentaciones de casos