BACKGROUND: Preoperative localization of nonpalpable @entity0 requires good coordination between imaging and surgery departments, and insertion of a guide wire can be traumatic for the @entity1 . This study was designed to evaluate the efficacy of intraoperative ultrasound localization of nonpalpable @entity0 directly by the surgeon. METHODS: This prospective study was conducted from June 2006 to October 2006 in 70 @entity1 who underwent surgery for nonpalpable @entity0 . Ultrasound was performed in the operating room by the surgeon with the @entity1 in the operative position. Tumor identification, the correlation with @entity5 diameter on preoperative ultrasound, analysis of resection margins, and the need to perform surgical re-excision were analyzed. RESULTS: Intraoperative ultrasound identified the target in 67 (95.7%) of 70 @entity1 . Two of the three lesions not detected by intraoperative ultrasound were < or =5 mm in diameter in @entity1 with a body mass index of > or =25 (normal range, 19-24). The correlation with diagnostic ultrasound for @entity5 dimensions was satisfactory (correlation coefficient r = .80). Resection margins free of invasive lesions were obtained in 66 cases (94.3%). Three @entity1 (4.3%) required surgical re-excision, one mastectomy due to multifocal @entity5 , and two lumpectomy due to positive resection margins. CONCLUSIONS: Intraoperative ultrasound localization of nonpalpable @entity0 is feasible and effective, with a sensitivity of 98.3% for @entity5 >5 mm. It spares the @entity1 the discomfort of a radiological and/or supplementary examination with insertion of a guide wire. It also saves time and money for hospital teams.

Intraoperative ultrasound localization of nonpalpable XXXX .

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'cancer', 'tumors'] @entity0 :: ('MESH:D001943', 'Disease') :: ['breast cancers', 'invasive breast cancer']
@entity0 :: (MESH:D001943,Disease) :: ['breast cancers']
