Most breast cancers arise in which part of the breast?

Hepatic cavernous hemangiomas demonstrate only peripheral enhancement during the:

Which of the following describes the thyroglossal duct?

A 68 year old male presents with complaints of problems voiding due to what he describes as an increased resistance to flow. The physician runs lab tests and finds that the man has a urinary tract infection, hematuria and proteinuria. After performing a DRE the physician feels an enlarged prostate gland. What would you expect the ultrasound to reveal?

What does the following image demonstrate?  

What is the name for recanalization of the prostatic urethra for severe cases of BPH?

What is the most common malignant tumor found in the colon?

What is breast neoplasm that has rapid growth can become very large and is a transitional tumor from benign to malignant?

Round each number to show three significant figures unambiguously.  Write the rounded answer in the box indicated.  [ans1]  0.0020764215 [ans2]  529.8994 [ans3]  800,000

    This image (B) was taken in the arterial phase after contrast injection.  What type of mass is likely represented by this contrast study?