Final answer:
The statement is true; brain edema that develops subsequent to a contusion or hematoma is indeed considered part of the lesion when calculating its size, as both the bleeding and the swelling contribute to the extent of the brain injury.
Step-by-step explanation:
True or False: Brain edema accompanying a contusion or hematoma is considered part of the lesion when assessing its size. This statement is true. When assessing the size of a lesion in the brain, such as a contusion or hematoma, accompanying edema is indeed considered part of the lesion. A hemorrhagic stroke, for instance, leads to bleeding within the brain tissue, resulting in a hematoma along with secondary edema in nearby tissue due to an increased permeability of the blood-brain barrier, allowing more fluid to accumulate. Therefore, when neurologists, radiologists, or other medical professionals measure the impact of such a stroke, both the initial hemorrhage and the subsequent edematous response are included in the assessment.
A blow to the lateral side of the head may fracture the bones of the pterion, causing damage to a major artery and leading to the formation of a hematoma. This bleed can create pressure on the brain and, if untreated, result in significant harm or death. Therefore, in the context of brain injuries, the full extent of damage, including the swelling, is vital for a comprehensive evaluation.