Statement: There are several types of surgical and therapeutic treatments which are banned for patients wanting to take part in the primary trial.
Primary_evidence: DISEASE CHARACTERISTICS:   Histologically confirmed breast cancer   Stage I or II disease (T1-T2, N0, M0/MX disease)   No chest wall invasion by tumor (T3 disease)   Medially or centrally located lesion   No multicentric disease   Multifocal disease allowed   No clinically positive axillary nodes   No enlarged internal mammary nodes by CT scan   Hormone receptor status not specified   PATIENT CHARACTERISTICS:   Male or female   Menopausal status not specified   American Society of Anesthesiologists (ASA) physical status classification 1-2   Not pregnant or nursing   Negative pregnancy test   No other concurrent known, invasive malignancy   No known chronic pulmonary disease   No known allergy to methylene blue or isosulfan blue   PRIOR CONCURRENT THERAPY:   No prior thoracic or cardiac surgery   No prior ipsilateral chest tube placement   Contralateral chest tube placement allowed   No prior neoadjuvant chemotherapy   No prior radiotherapy to the mediastinum