Surgical Biopsy of Latent Mammary Lesions with the Guidance of Indwelling Wire Placed in by Stereotactic Puncture

Objective To evaluate surgical biopsy with the guidance of indwelling wire placed through stereotactic puncture in diagnosing of non palpable and mammographically demonstrated small breast lesions. Materials and Methods Biopsy was done in patients with non palpable, mammographically suspected small lesions, which demonstrated malignant signs such as clusters of calcifications, poorly demarcated nodules or regional structural irregularities. After computerized stereotactic puncture of the lesion was done, a guide wire was indwelled in the suspected spot. With the guidance of the wire, surgical resection of the suspected tissue was made.Results Of 34 lesions found on mammograms in 31 patients, 32 were punctured with wire indwelling. Surgical biopsy, including localization and resection of the lesion, with the guidance of the wire was successful with only one procedure for all 32 lesions. The accuracy of qualitative diagnosis was 100%. Pathological results showed malignant in 11 lesions (9 patients) and benign in 23 lesions. Of 9 cases with malignancy, 4 were infiltrative ductal carcinoma (5 lesions), 3 intraductal carcinoma and 2 simple carcinoma (3 lesions). Conclusion Surgical biopsy with the guidance of indwelling wire placed through stereotactic puncture is very helpful in correctly localizing and removing small latent breast lesions. It can not only precisely locate the lesion for the surgeon, but also avoid false negative results due to blind resection or biopsy. The technique is less invasive and easy to perform, and is very helpful for the diagnosis of breast lesions.