[Evaluation of prognostic factors in breast cancer EC I-II and the importance of local recurrence].

Objective: [corrected] We evaluated the prognostic factors in patients with breast cancer EC-I-II treated in the Instituto Nacional de Cancerología in Mexico and compared patients with or without local or/and systemic recurrence.

Method: This is a retrospective study in patients treated with conservative surgery between 1983 and 1993 with a diagnosis of invasive breast cancer and tumors <4 cm All pathological variables were analyzed and we performed studies on c-erb.B2, P53, estrogene and progesterone receivers, cellular ploidy and cellular percentage on face "S" of the cellular cycle. All these variables were compared in two groups, one with recurrences and the other without recurrences, with the same symptoms and demographics characteristics.

Results: From 1270 patients with breast cancer EC I-II, 139 patients were submitted to conservative surgery, 14 patients of this group recurred and were compared with 32 patients that did not, out of a total of 46 patients. We found that SBR greater than five (P = 0.046), poor differentiated tumors (P = 0.04), tumors with vascular permeability (P = 0.020) and with intraductal characteristics of a comedocarcinoma (P = 0.004) had a worse prognosis and increased the risk of local recurrences.

Conclusions: In patients with breast cancer the pathological variants are more important than the so called secondary prognostic variables. Besides the pathological variants, it is acceptable only the use of hormonal receptors and the presence of c-erb-b2.