| 摘要 |
Between March 1993 and October 1995, nonpalpable breast lesions in 101 patients were excised under intraoperative ultrasound examination at Chang Gung Memorial Hospital in Taipei, Taiwan. The clinical indications for breast ultrasound examination included breast nodularity, fibrocystic changes, bleeding nipples, breast dominant masses and patients who had had one-side mastectomy for breast cancer. The mean age of the patients was 42 years old. In 60 cases the lesions was located in the left breast, while three patients had bilateral nonpalpable breast lesions. The average tumor size was 1.13X0.8 cm. Forty-one patients had x-ray mammography but only nine of those patients demonstrated a mass, and eight patients showed microcalcifications. The pathology revealed that 40 cases were benign tumors, 45 were fibrocystic changes, eight cases of intraductal papilloma, seven were cases of malignancy and one patient had a phyllodes tumor. For the seven nonpalpable breast cancers, the average size was 1.15X0.98 cm.
Of these seven, only one patient presented with microcalcification and
another with a mass lesion on mammography. The nonpalpable tumors were located 1.14 cm below the skin of the breast, significantly deeper than the palpable tumors (0.58 cm). Breast ultrasound is not only indicated for palpable tumors to differentiate cysts from solid tumors, and benign lesions from malignant, but it is also necessary for every high risk asymptomatic Chinese woman. The intraoperative ultrasound-guided excisional biopsy is an effective and accurate procedure for the diagnosis of nonpalpable breast lesions. |
