A review was undertaken of 226 patients with primary breast carcinoma who were 35 years of age, or younger, from 1960 to 1987. Comparisons to other studies of young and older women were made for clinical, pathologic, and survival characteristics. Young patients with breast cancer share many of the same disease characteristics of tumor type, location, size, and nodal involvement as their older counterparts. Five- and 10-year survival rates were comparable for patients with stage I or stage II disease and negative axillary lymph nodes. However, patients with stage II disease and positive nodes appear to have a decreased survival compared with older patients.