Evaluation of histomorphometric changes in tissue architecture due to fixation delay
Pallav Singhal1, Gadiputi Sreedhar2, Narendra Nath Singh3
1Department of Oral Pathology and Microbiology, Sarjug Dental College, Darbhanga, Bihar, India.
Summary
Normal saline (NS) is the best temporary carrying medium for tissue specimens when immediate fixation is not possible. Proper handling of tissue samples preserves diagnostic accuracy and prevents misdiagnosis.
Area of Science:
- Histopathology
- Surgical Pathology
- Tissue Processing
Background:
- Complete fixation is essential for accurate tissue specimen preparation.
- Delays in fixation due to unavailability of proper solutions can lead to architectural changes, impacting diagnostic value.
- Tissues are often stored in temporary media like normal saline (NS) or local anesthetic before fixation.
Purpose of the Study:
- To evaluate the impact of different carrying media on tissue sectioning, staining, and microscopic details.
- To determine the optimal temporary storage method for tissue specimens prior to standard fixation.
Main Methods:
- Goat tongue tissue was used as a specimen.
- Tissues were stored in various carrying media for different time intervals.
- Standard formaldehyde fixation, sectioning, staining, and histological evaluation were performed.
Main Results:
- Normal saline (NS) emerged as the superior carrying medium.
- 10% honey and local anesthetic showed moderate results.
- 2% hydrogen peroxide is unsuitable as a carrying medium.
Conclusions:
- Normal saline (NS) is recommended as the preferred carrying medium for delayed fixation.
- Clinicians and pathologists must understand the effects of carrying media on tissue morphology to avoid diagnostic errors.
