[Contemporary methods of the target puncture of the mammary gland]

New accurate methods of puncture of the mammary gland, making use of preliminary layout using roentgenograms, coordination nets, Cytoguide comprter device, and ultrasound-monitored spot biopsy replaced the traditional poorly informative methods. Sonography-monitored puncture is the most informative in cases with both palpated and unpalpated formations shaped as nodules: it permits imaging in 85% of cases. However, in 25-30% of cases unpalpated cancer presents as microcalcinates and cord-like restructuring which cannot be imaged on sonograms. Moreover, unpalpated cancer presenting as a nodule against the background of fatty involution also may be undiscernible on sonograms. In such cases puncture controlled by roentgenography with a computer device and a relevant kit of disposable instruments is advisable, giving accurate information in 61.1% of cases.