[Nonpalpable lesions of breast carcinoma in elderly patients].

Breast cancer is the most frequent form of tumour in women. The only weapon at our disposal to reduce the mortality rate for breast cancer is early diagnosis. A number of studies have shown, using appropriate prevention programmes, an increasing number of minimum 20-30% lesions. The probability that a non-palpable lesion is malignant increases with age, with a positivity of 37-39% is women aged over 50. Localisation using FNAB requires studies with greater statistical value so that it can be inserted in current prevention programmes, given that the percentage of false negative is > 8%. At present, excisional biopsy with bioptic tests continues to be the standard reference method for the diagnosis of non-palpable lesions; this diagnostic procedure allows the lesion to be removed in positive cases, and avoids re-operating as in the case of suspected or inadequate cytological tests.