You, as the pathologist, need to know what they mean. Raised - When you see a raised lesion, it generally means something has been added to the tissue. Cells - Generally either inflammatory or neoplastic, but should consider hyperplasia, especially in cases where you see organomegaly. Gas - usually bacterial in origin. When you see a depressed lesion, something is generally missing.
Depressed lesions can also mean the presence of scar tissue.
C. Shape 1. Triangular - vascular 2. Rhomboid - vascular 3. Circles - vascular, mycotic, cysts 4. Cavitated - neoplasia 5.