Mammogram
Breast cancers can be observed when still small by the presence of microcalcifications in the breast [2]. Mammograms can find breast cancer at 1.1 cm. the earliest a tumor can be observed on a mammogram is when it is within the range of 0.2 cm and 0.3 cm in diameter.
Studies show that the effectiveness of mammogram believe that increased mammograms from the 1980s till now, is linked with trends in the average size of tumors when it is diagnosed.
The average size of breast cancer at the time of diagnosis reduced by 26 percent, from 2.6 cm to 2.0 cm. another study was done which focused on the size of breast tumors at the time of diagnosis from 2001 and 2014 and it was discovered that the size breast tumors increased by 3 percent to 13 percent.
Breast MRI
There is not much information to explain the average size or smallest size of a breast tumor that can be observed on breast MRI. This is a very sensitive method for women who have a history of breast cancer in their families.
A new technique was introduced; it is called fast MRI. This method provides a higher detection rate than a mammogram for people with dense breast tissue.