Aggressive tumors tend to have rapidly growing vasculature and many micro-hemorrhages.

The tumors in this disease tend to be noncancerous (benign).

The institute is already studying why black women are getting the disease so young and why their tumors tend to grow independent of estrogen.

The tumors tend to be more malignant, as measured by cellular indicators of a poor prognosis.

The tumour tends to bulge from the cut surface, and small areas of hemorrhage may be seen.

Surgery to remove the tumor is a common treatment, though the tumors tend to recur.

By the time these symptoms appear, tumors tend to be larger and more difficult to treat.

Malignant tumors on the other hand tend to spread to surrounding areas and tissues.

At the time of surgery, the tumor tends to peel away from the adjacent bones, although not the ossicles.

Papillary tumors tend to be more aggressive in patients over age 45.