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.
The most common benign solid lesions of the liver. Represent congenital vascular lesions that contain fibrous tissue and small blood vessels that eventually grow. Range in size from small (1 centimeter or less) to giant, cavernous hemangiomas (10 to 20 centimeters) Spontaneous rupture (bleeding) is rare.