Skip navigation

Glossary

View glossary terms beginning with ...

  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. [0-9]
  1. Aa
  2. Ab
  3. Ac
  4. Ad
  5. Ae
  6. Af
  7. Ag
  8. Ah
  9. Ai
  10. Aj
  11. Ak
  12. Al
  13. Am
  14. An
  15. Ao
  16. Ap
  17. Aq
  18. Ar
  19. As
  20. At
  21. Au
  22. Av
  23. Aw
  24. Ax
  25. Ay
  26. Az
  27. A0-9
 

List of terms beginning with At

Atom

The tiny particles of which matter is composed. They consist of a central nucleus made up of positively charged protons and chargeless neutrons, surrounded by a cloud of negatively charged electrons.

Atypia

Cells that look different from normal cells. A diagnosis does NOT mean you have cancer. But it may mean you are at increased risk of developing cancer.

Atypical hyperplasia

Benign but abnormal cells. It is the only form of benign breast disease that is a risk factor for breast cancer. A woman diagnosed with atypical hyperplasia will probably have the affected area removed, and may be invited for more frequent breast screening.