Intraoperative sonographic localization of breast masses: success with specimen sonography and surgical bed sonography to confirm excision

Intraoperative ultrasound assistance for excision of impalpable musculoskeletal soft tissue tumors

Intraoperative ultrasonography is a useful tool for the detection and extirpation of liver metastases, breast masses, and melanoma. However, the efficacy of this technology in intraoperative localization and resection of small soft tissue tumors has not been addressed. The purpose of this study is to report on the efficacy of intraoperative ultrasound assistance in excising impalpable musculoskeletal soft tissue tumors. Twenty-two soft tissue tumors <3 cm (range, 0.7-3 cm) were resected with intraoperative ultrasound assistance. All tumors were localized in the deep panniculus, fascia, or muscle. Surgical time and length of incisions was recorded in all the cases. Intra- and postoperative reregistration was made to confirm the tumor resection. Ultrasound assistance was successful in obtaining an accurate localization in all treated cases. Mean surgical time was 30 minutes (range, 13-87 minutes). Average incision length was 5.7 cm (range, 2.5-10.6 cm). Reregistration allowed intraoperative confirmation of the adequacy of the excision. The procedure allowed recognized and excised additional nodules not previously diagnosed in 3 cases. Postoperative echography done in all patients confirmed complete extirpation of the tumors, and histopathology confirmed adequate margins obtained. Intraoperative ultrasound can be used as an efficient tool to localize and treat impalpable small soft tissue tumors.

Immersion ultrasonography of excised nonpalpable breast lesion specimens after ultrasound-guided needle localization

Objective

Ultrasound-guided needle localization has been used prior to the surgical excision of nonpalpable breast lesions. The aim of the study was to assess the feasibility of the use of a saline immersion specimen ultrasound technique (immersion-US) to confirm the successful removal of breast lesions.

Materials and Methods

The devised immersion-US technique was used to examine the excised tissues of 72 ultrasound-guided needle localized breast lesions of 58 patients (34 benign lesions, 30 high-risk lesions and 8 malignant lesions). Freshly excised specimens were placed in a container filled with saline and one radiologist scanned the surgically excised specimens using a high-frequency linear transducer. We evaluated successful lesion removal and the qualities of the immersion-US images. Miss rates were determined by the use of postoperative ultrasound during follow-up.

Results

All 72 lesions were identified by the use of immersion-US and satisfactory or excellent quality images were obtained for most lesions (70/72, 97%). Five (7%) lesions were initially identified as incompletely excised, based on the immersion-US findings, and prompt re-excision was undertaken. Follow-up ultrasound examinations showed no residual mass in the surgical field in any patient.

Conclusion

The immersion-US technique was found straightforward and efficient to perform. Immersion-US was able to determine whether nonpalpable breast lesions had been successfully excised after ultrasound-guided needle localization.

Accuracy of sonographic localisation and specimen ultrasound performed by surgeons in impalpable screen-detected breast lesions

The National Breast Screening Programme had dramatically impacted surgical practice. Up to 50% of all newly diagnosed cancers are now impalpable creating increased demand for image-guided localisation. Wire-guided localisation (WGL) is the current gold standard, but USS-guided localisation by radiologists is a well-documented and effective technique. Increasing numbers of surgeons are proficient in using ultrasound and may be as accurate as radiologists in localising lesions intra-operatively. Of 68 patients with screen-detected impalpable lesions referred to one surgeon in our unit between January 2005 and February 2006, 32 had mass lesions, which were well seen on ultrasound and underwent intra-operative USS-guided localisation performed by a surgeon. All lesions were correctly identified and 87.5% (n=28) were fully excised. Those lesions not fully excised were lobular cancers. Intra-operative sonographic localisation performed by surgeons is an accurate and effective technique. It may produce less patient anxiety and discomfort than WGL and allow more effective and efficient use of resources and theatre time.

Use of Ultrasound in Breast Surgery

The use of ultrasound has grown tremendously since it was introduced in 1951. This article describes use of this modality in patients who have breast disease.

Pilot Trial of Cryoprobe-Assisted Breast-Conserving Surgery for Small Ultrasound-Visible Cancers

BACKGROUND

Stereotactic and ultrasonography-guided large core needle biopsy has replaced wire localization biopsy as the diagnostic method of choice. Lumpectomy alternatives are being sought to eliminate the need for preoperative wire localization, to facilitate easier and more accurate resection, and to decrease positive margin rates. Cryoprobe-assisted lumpectomy (CAL) was investigated as an alternative.

METHODS

Patients with ultrasonographically visible breast cancers that otherwise would have required wire localization participated. Before lumpectomy, a cryoprobe (Visica; Sanarus, Pleasanton, CA) was inserted through a 3-mm skin incision and directed by ultrasonography through the center of the tumor. An ice ball was created that enveloped the tumor plus an adjacent 5-10 mm of sonographically normal breast tissue.

RESULTS

Twenty-four CAL procedures were performed and all lesions were successfully localized. Mean (+/-SD) tumor size was 1.2 +/-.4 cm (range,.7-2.0 cm). Mean dimensions of the ice ball before excision were 3.9 +/-.3 cm by 2.5 +/-.5 cm, and the ice margin around the tumor was 8 +/- 2 mm. The size of the ice ball was controlled to the millimeter, and the ice ball itself provided a precise template around which to dissect. The margin re-excision rate was 5.6% among patients with an ice margin greater than 6 mm.

CONCLUSIONS

CAL is a superior alternative to wire localization. Ultrasonographic visualization of the ice ball allows the size of the margin and tissue resected to be individually tailored and accurate within millimeters. The created template allows a precise lumpectomy, adding a dimension of control not previously realized with any other technology.