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Imaging Biological Samples with Optical Microscopy

Imaging Biological Samples with Optical Microscopy

Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...

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How I investigate difficult cells at the optical microscope.

¹Fondazione Policlinico Universitario A. Gemelli IRCCS - Roma, Università Cattolica del Sacro Cuore, Rome, Italy.

International Journal of Laboratory Hematology

|December 20, 2020

Summary

Morphological identification of blood cells is crucial for diagnosing hematological neoplasms. This review focuses on identifying challenging cells with significant diagnostic implications in peripheral blood and bone marrow.

Keywords:

WHO classification blast leukemia morphology myelodyplasia

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Area of Science:

Hematology
Pathology
Cell Biology

Background:

Blood cell morphology is fundamental for diagnosing hematological neoplasms, complementing other diagnostic methods.
Despite advancements like the WHO classification, morphological analysis faces challenges with standardization and interobserver variability.
Key diagnostic aspects include counting blasts and identifying dysplastic cells.

Purpose of the Study:

To review methods for identifying difficult-to-diagnose blood cells.
To highlight cells with significant diagnostic implications in hematological neoplasms.
To provide guidance for improving morphological diagnostic accuracy.

Main Methods:

Literature review of morphological classification systems (e.g., FAB, WHO).
Analysis of diagnostic criteria for challenging cell identification.
Focus on peripheral blood and bone marrow film analysis.

Main Results:

Detailed descriptions of various hematological neoplasms based on morphology.
Identification of specific cell types and morphological features critical for diagnosis.
Discussion of common pitfalls and variability in morphological assessment.

Conclusions:

Morphological assessment remains a vital component in diagnosing hematological neoplasms.
Accurate identification of difficult cells enhances diagnostic precision.
Standardization and continued education are essential for improving interobserver agreement.