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Robert J. Barth
and
Christopher R. Brigham

Introduction “Does head trauma cause a pre-existing benign meningioma to become malignant ” Meningiomas are “slow-growing neoplasms that most likely derive from the meningothelial cells of the arachnoid layer.” 1 This question provides an excellent foundation for exploring the process of causation analysis. The baseless nature of claims of trauma causing cancer had long been highlighted in publications documenting United States (US) Supreme Court rulings from the 1990s regarding expert witness work. A prominent and quotable example is the work of Peter

in AMA Guides® Newsletter
Stephen L. Demeter

disease where impairment is provided for the risk of difficulty in conceiving (Table 7-12, Criteria for Rating Impairment Due to Fallopian Tube and Ovarian Disease, 6th ed, 154). Class 1 impairment for leukemia in remission < 5 years where impairment is provided for the risk of developing a recurrence or a future neoplasm, including hematopoietic malignancies (Table 9-7, Criteria for Rating Impairment Due to the Leukemias, 6th ed, 196). Class 1 impairment for thrombotic disorders where impairment is provided for the risk of future blood clots (Table 9-12, Criteria

in AMA Guides® Newsletter