1. Differentiating Benign From Malignant Bone Marrow B-Cell Lymphoid Aggregates: A Statistical Analysis of Distinguishing Features
- Author
-
Xiaohui Zhao, Russell K. Brynes, Niloufar Reisian, Kaveh Naemi, Deepty Bhansali, Sherif Rezk, and Abbey Johnston
- Subjects
Adult ,Male ,Pathology ,medicine.medical_specialty ,Lymphoma, B-Cell ,Adolescent ,Lymphoid Tissue ,Biopsy ,T-Lymphocytes ,Bone Marrow Cells ,Immunophenotyping ,Pathology and Forensic Medicine ,Diagnosis, Differential ,Young Adult ,Bone Marrow ,Predictive Value of Tests ,Biomarkers, Tumor ,medicine ,Humans ,Statistical analysis ,Child ,B cell ,Aged ,Aged, 80 and over ,B-Lymphocytes ,medicine.diagnostic_test ,business.industry ,General Medicine ,Middle Aged ,medicine.disease ,Lymphoma ,Medical Laboratory Technology ,medicine.anatomical_structure ,Female ,Bone marrow ,business - Abstract
ContextLymphoid aggregates are seen in a minority of bone marrow biopsy specimens, and when present, their neoplastic nature is often apparent by morphologic evaluation. However, the distinction between benign and malignant aggregates can be a diagnostic challenge when there are multiple aggregates with no documented history of lymphoma.ObjectiveTo aid in the distinction between benign and malignant B-cell lymphoid aggregates.DesignPreviously, we described specific distribution patterns for B and T lymphocytes within bone marrow aggregates. To statistically analyze the significance of these patterns as well as previously reported criteria, we examined 128 bone marrow specimens with benign aggregates and 78 specimens with documented malignant B-cell aggregates and calculated specific odds ratios (ORs) and 95% confidence intervals (CIs) to aid in differentiating between benign and malignant B-cell aggregates.ResultsAggregates with infiltrative edges (OR, 80.54; 95% CI, 31.76–204.21), a B-cell pattern (OR, 30.08; 95% CI, 13.28–68.10), paratrabecular location (OR, 10.17; 95% CI, 3.96–26.12), size greater than 600 μm (OR, 6.83: 95% CI, 3.61–12.93), or cytologic atypia correlated with malignancy.ConclusionWhen taken collectively, the presence of more than 2 of these characteristic features was strongly predictive of malignancy. more...
- Published
- 2015
- Full Text
- View/download PDF