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Pseudopyropoikilocytosis: a striking artefact
Abstract:
The blood films both of patients with hereditary pyropoikilocytosis and of those with severe thermal burns are characterised by budding erythrocytes and the presence of microspherocytes. Recently, a fourth example of similar morphological features, caused by overheating of a blood specimen in a motor vehicle during transport to the laboratory, has been observed. It is important to be aware of this artefact as failure to recognise it is likely to lead to diagnostic confusion and unnecessary further testing, causing inconvenience to the patient.
Insights
Blood films showing budding erythrocytes and microspherocytes can indicate hereditary pyropoikilocytosis or thermal burns. This artifact can also result from overheating during transport, potentially causing diagnostic confusion.
Area of Science:
- Hematology
- Pathology
- Medical Diagnostics
Background:
- Hereditary pyropoikilocytosis and severe thermal burns present with characteristic blood film morphologies, including budding erythrocytes and microspherocytes.
- These morphological changes are critical diagnostic indicators in specific clinical contexts.
Observation:
- A novel observation details similar blood film abnormalities arising from iatrogenic overheating during blood sample transport.
- This artifact mimics pathological changes, highlighting the impact of pre-analytical variables on blood smear morphology.
Findings:
- The study identifies overheating of blood specimens as a cause for budding erythrocytes and microspherocytes.
- This finding expands the differential diagnosis for these red blood cell morphologies beyond inherited conditions and severe burns.
Implications:
- Recognizing this transport-induced artifact is crucial to prevent misdiagnosis of hereditary pyropoikilocytosis or thermal injury.
- Awareness can avert unnecessary patient testing and associated inconvenience, improving diagnostic efficiency.