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.
Lentigo simplex is an extremely common, benign melanocytic skin lesion, which can be regarded as the precursor lesion of acquired junctional melanocytic nevus, nowadays called Clark nevus. Clinically, lentigo simplex involves sun-exposed skin of the trunk and extremities in individuals with white complexion.