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A mysterious malady: the Malachowski-Wright-Giemsa stain to the rescue
P C J Ward1, E F Glassy, S H Kroft
1Department of Anatomy, Microbiology & Pathology, University of Minnesota Medical School-Duluth, 55812, USA. path@d.umn.edu
Summary
A puzzling absolute monocytosis was resolved by re-staining blood smears. The Malachowski-Wright-Giemsa method clarified the diagnosis, unlike the initial Diff-Quik stain.
Area of Science:
- Hematology
- Clinical Pathology
Background:
- A patient presented with unexplained absolute monocytosis, a condition characterized by an elevated count of monocytes in the blood.
- Initial diagnostic steps involved examining blood smears stained with Diff-Quik, a rapid staining technique.
Observation:
- The initial Diff-Quik stained blood smears did not adequately reveal the cause of the monocytosis.
- Further examination was performed using a different staining method to investigate the cellular morphology.
Findings:
- Staining additional blood smears with the standard Malachowski-Wright-Giemsa method clearly identified the source of the elevated monocyte count.
- This differential staining technique provided superior morphological detail crucial for accurate diagnosis.
Implications:
- The findings highlight the importance of selecting appropriate staining methods in hematological diagnostics.
- Choosing the correct Romanowsky stain, such as Malachowski-Wright-Giemsa, is critical for resolving diagnostic challenges like puzzling monocytosis.
- This case underscores the value of established laboratory techniques in confirming or clarifying initial findings.
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