Original Contribution
Role of Reticulin & Masson’s Trichrome Stains in Evaluation of Extent of
Fibrosis in Bone Marrow Biopsies: A Histochemical Study on 36 Cases of
Primary Myelofibrosis
1.*Dr. Sadia Afroz, Medical Officer, Department of Histopathology, National Institute of Cancer Research &
Hospital (NICRH), Mohakhali, Dhaka-1212, Bangladesh; sadiatoma2813@gmail.com
2. Dr. Bishnu Pada Dey, Associate Professor, Department of Pathology, BSMMU.
3. Dr. Rumana Yasmin, Assistant Professor, Department of Pathology, Dhaka Central International Medical College,
Dhaka, Bangladesh.
4. Dr. Evana Kabir, Specialist, Laboratory, United Hospital, Gulshan-2, Dhaka, Bangladesh
5. Dr. Syeeda Shiraj-Um-Mahmuda, Lecturer, Department of Pathology, Dhaka Medical College & Hospital, Dhaka.
6. Dr. Tasmia Islam, Specialist (Pathology), Square Hospital Limited, Dhaka-1205, Bangladesh.
7. Dr. Ummey Salma Shabnam, , Assistant Professor, Department of Histopathology, National Institute of Cancer
Research & Hospital (NICRH), Mohakhali, Dhaka-1212, Bangladesh.
8. Dr. A.K.M. Nurul Kabir, Professor, Department of Pathology, Bangabandhu Sheikh Mujib Medical University
(BSMMU), Shahbagh, Dhaka-1000, Bangladesh.
*For correspondence
Abstract
Background: Primary myelofibrosis (PMF) is a rare hematological malignancy with higher
mortality and morbidity due to progression of bone marrow fibrosis (BMF). The amount of bone
marrow reticulin and collagen fibrosis is detected by reticulin and Masson’s trichrome (MT) stains,
respectively. The study aimed to explore the pattern and degree of BMF in PMF cases with above
mentioned special stains along with conventional Hematoxylin& Eosin (H&E) stain.
Methods: Thirty-six histopathologically suggested or diagnosed cases of PMF were studied at the
Department of Pathology, BSMMU. Paraffin blocks of trephine biopsy specimens of the selected
cases were collected. H&E, reticulin and MT stains were applied on the re-cut sections. Extent of
fibrosis was assessed by examining the sections with each special stain using a proposed four
scaled semiquantitative bone marrow fibrosis (MF) grading systems. The cases were divided into
two groups. Patients having grade MF-0 to MF-1 were considered absent pathological BMF. Those
cases with MF-2 to MF-3 were encountered with present pathological BMF.
Results: In this study, 19 (52.8%) PMF cases had pathological BMF diagnosed by only H&E.
Moreover, thirty four (94.4%) patients had pathological BMF corresponding to MF-2 to MF-3
detected by special stains.
Conclusion: Significantly higher (p<0.05) detection of pathological BMF cases with use of
additional special stains recommends that, both reticulin and MT stains can be used routinely to
assess BMF properly according to special grading system.
[Journal of Histopathology and Cytopathology, 2023 Jul; 7 (2):103-111]
Keywords: Bone marrow fibrosis, Primary myelofibrosis, Reticulin fibrosis, Collagen fibrosis,
Reticulin stain, Masson’s trichrome stain, Hematoxylin & Eosin, Bone marrow fibrosis (MF) grade.
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