For oncologists, i am a pharmacist i want to know invasive ductal carcinoma in which stage of breast cancer ?

1 or more: Once the tumor has turned invasive, there is a possibility that it will cause death, so that it needs a stage of at least one. Some of the preinvasive lesions get a zero. Only when it's been determined how far the cancer has gotten can we narrow in on the exact stage. The oncologists will tell you the same.

It is a cancer: The stage depends on the size of the tumor as well as involvement of lymph nodes in the axilla. It is at least stage 1 cancer but could be higher stage if the nodes are positive or the tumor is bigger than 2cm.

Could be any stage: Once invasive could be any stage depending on spread in a " in situ " cancer ( Stage 0 )the cancer cells are staying in side the duct , almost like sleeping inside milk dicts ( dormant ) once they break out from limiting ( holding ) membrane and comes our of duct then termed as invasive cancer the staging begins like Stage I and on to other stages . II , III . IV .Good Luck in your profe

Invasive ductal CA: Invasive ductal refers only to the type of tumor. Stage involves lymph node sampling and size of tumor. Please read the info on this link: http://www.cancer.gov/cancertopics/pdq/treatment/breast/healthprofessional/page3