Hematology

Megaloblasts in Bone Marrow with Vitamin B12 Deficiency

Explore the morphology of megaloblasts in bone marrow aspirates from patients with vitamin B12 deficiency, focusing on asynchronous maturation, chromatin structure, and mitotic figures.

👋🏻Let’s get acquainted…MEGALOBLASTS. (marked with red arrows*)

🩸Bone marrow aspirate from a patient with vitamin B12 deficiency.

🧐Asynchronous maturation of the nucleus and cytoplasm is noted. Pronounced hemoglobinization of the cytoplasm (mood color blue😁) while maintaining a delicate chromatin structure.

☝🏻Chromatin condensation occurs unevenly, in clumps (photo 2). Like static on a TV📺, salami sausage🍽️, or sand after a light rain🌧️

➖A cell in mitosis is present (green arrow)

🆘The last photo shows megaloblasts, whose strength and power compressed an innocent erythrocyte.

*Not all megaloblasts are marked, for better perception of all cellular elements. (Without overlapping them)

❓What are your associations with the chromatin in photo 2, or do you use the comparisons presented above in your practice?

🙏 The publication was kindly provided by Clinical Laboratory Diagnostics Doctor Tanya Stepanova, Volgograd