473
Participants
Start Date
May 31, 1993
Primary Completion Date
December 31, 2002
Study Completion Date
August 31, 2010
tamoxifen citrate
20 mg daily beginning within 6 weeks of surgery for 5 years or until relapse, whichever occurs first.
conventional surgery
Either total mastectomy or, optionally if the tumor was smaller than 5 cm, a breast conserving procedure (lumpectomy or quadrantectomy).
radiation therapy
No radiotherapy is to be given after mastectomy. Radiotherapy is optional after breast conserving surgery according to prospectively determined guidelines within each institution. It should be given to the breast only and not to the draining node areas.
Axillary clearance
Axillary node dissection.
Auckland Adventist Hospital, Auckland
National Institute of Oncology, Budapest
Royal Prince Alfred Hospital, Sydney, Sydney
Newcastle Mater Misericordiae Hospital, Waratah
Anti-Cancer Council of Victoria, Melbourne, Parkville
Royal Adelaide Hospital, Adelaide
Sir Charles Gairdner Hospital, Perth, Perth
Groote Schuur Hospital, Cape Town, Cape Town
Spedali Civili, Brescia
Centro di Riferimento Oncologico - Aviano, Aviano
Presidio Ospedaliero-Gorizia, Gorizia
Ospedale Civile Rimini, Rimini
Hadassah University Hospital, Jerusalem
Ospedale San Eugenio, Rome
Institute of Oncology, Ljubljana, Ljubljana
Sahlgrenska University Hospital, Gothenburg (Goteborg)
University Hospital, Basel
Inselspital, Bern, Bern
Centre Hospitalier Universitaire Vaudois, Lausanne
Kantonsspital - St. Gallen, Sankt Gallen
UniversitaetsSpital, Zurich
ETOP IBCSG Partners Foundation
NETWORK