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Microwaves: a revolution in histoprocessing
N Amrutha1, Shankargouda Patil2, Roopa S Rao3
1Postgraduate Student, Department of Oral Pathology, Faculty of Dental Sciences MS Ramaiah University of Applied Sciences, Bengaluru Karnataka, India.
Background And Aim:
Pathologists are under constant pressure for instant and reliable diagnosis. The manual procedures employed in private laboratories and institutional setup for histoprocessing and staining are laborious and intense. Thus, this study aims to evaluate and compare the microwave tissue processing and staining with the conventional methods which are in vogue.
Materials And Methods:
Of the formalin fixed tissue biopsies received by our department, 30 specimens were randomly picked and subjected to grossing. Each specimen was cut into equal halves, each half was processed and stained by conventional method while the other by the microwave method. The entire procedure was blinded and evaluated by four observers based on the criteria of Mahesh Babu et al (2011): Cellular clarity, cyto-plasmic details, nuclear detail and color intensity. The results were statistically analyzed using Chi square test and kappa.
Results:
The overall time employed for microwave processing was 2 hours and for conventional methods it was 7 hours, while H and E staining by microwave process took 16 minutes and 45 seconds and it took 31 minutes and 20 seconds by the conventional process. The diagnostic ability of microwave method yielded promising results and was less time consuming.
Conclusion:
Microwave processing and staining yielded quicker and better results compared to the routine methods. Therefore, Microwave can serve as a quicker and a reliable diagnostic method for a pathologist.
Insights
Microwave tissue processing and staining significantly reduces diagnostic time compared to conventional methods. This faster approach offers a reliable alternative for pathologists, improving diagnostic efficiency.
Area of Science:
- Histopathology
- Diagnostic Pathology
- Biotechnology
Background:
- Pathologists face pressure for rapid, accurate diagnoses.
- Conventional histoprocessing and staining are time-consuming and labor-intensive.
- Need for efficient diagnostic methods in pathology laboratories.
Purpose of the Study:
- To compare microwave-assisted tissue processing and staining with conventional methods.
- To evaluate the time efficiency and diagnostic quality of both techniques.
- To determine the reliability of microwave technology in histopathology.
Main Methods:
- 30 formalin-fixed tissue biopsies were randomly selected.
- Each specimen was divided; one half underwent conventional processing/staining, the other microwave.
- Evaluation by four observers using criteria: cellular clarity, cytoplasmic/nuclear detail, color intensity.
Main Results:
- Microwave processing time: 2 hours vs. conventional: 7 hours.
- Microwave H&E staining time: 16 min 45 sec vs. conventional: 31 min 20 sec.
- Microwave method demonstrated promising diagnostic ability and significant time savings.
Conclusions:
- Microwave processing and staining yield faster and superior results.
- Microwave technology offers a quicker and reliable diagnostic tool for pathologists.
- Potential to enhance diagnostic workflow efficiency in histopathology.

