For instance microcalcifications that are more scattered are probably due to a benign (non-cancerous) cause, a “cluster” of microcalcifications may
increase concern that there may
be an underlying tumor. There may
or may not be any 'lesion' visible on mammography. However, if the microcalcificantions appear suspicious, further investigation, such as a biopsy, is usually recommended. A BIRAD category 4 means that there is a suspicious abnormality.