The idea that assessment is intrinsic to effective instruction is traced from early experiments in the individualization of learning through the work of Benjamin Bloom to reviews of the impact of feedback on learners in classrooms.
Incidental hypervascular lesions are also very common findings in liver imaging. It is important to differentiate between 'touch' and 'don't touch' lesions. Benign 'don't touch' hypervascular tumors include hemangioma, FNH and small adenomas.
A neurovascular syndrome associated with compression of the brachial plexus; subclavian artery; and subclavian vein at the superior thoracic outlet. This may result from a variety of anomalies such as a cervical rib, anomalous fascial bands, and abnormalities of the origin or insertion of the anterior or medial scalene muscles.