Preoperative Ultrasound-guided Wire Localization Research Articles

Preoperative Ultrasound-Guided Localization of the Lateral Femoral Cutaneous Nerve: From Guide Wire to Novel Clip.

Lateral femoral cutaneous nerve (LFCN) decompression and transposition are surgical treatment options for meralgia paresthetica. Identifying the LFCN during surgery may be challenging, and preoperative localization is a valuable adjunct in this case. The objective of this study was to explore a new technique using preoperative ultrasound-guided clip localization (USCL) of the LFCN. After Institutional Review Board approval, data were collected on patients who underwent both preoperative ultrasound-guided wire localization (USWL) and USCL over the past 13 years. Skin-to-nerve time was calculated prospectively. Fifty-six patients were identified, 51 had USWL and 5 had USCL; the skin-to-nerve median time was 7.5 and 6 minutes, respectively. Six wires were misplaced, and this was at the beginning of utilization of the USWL technique. There were no nerve injury, infection, or bleeding complications related to either wire or clip placement. USWL or USCL is safe and time-efficient in LFCN surgeries.

Outcomes of intraoperative versus preoperative ultrasound-guided wire localization of nonpalpable breast lesions

Background: Nonpalpable breast lesions require localization, the gold standard for which is preoperative ultrasound-guided wire localization (PUGWL). Our unit also employs intraoperative ultrasound-guided wire localization (IUGWL). Here we evaluate PUGWL and IUGWL outcomes between 2014 and 2018. Primary outcomes were reoperation rates, complication rates and average specimen weights. Trainee feedback and cost analysis assessed IUGWL viability. Methods: Prospectively recorded data were collected. 511 patients were included (241 PUGWL and 270 IUGWL). Results: Reoperation rates: PUGWL 17.7% versus IUGWL 13.9% (p = 0.28) . Complication rates: PUGWL 5.8% versus IUGWL 6.6% (p = 0.72) . Average specimen weight: PUGWL 34.2 g versus IUGWL 24.3 g (p < 0.0001) . Trainees needed 15 supervised cases to be IUGWL competent. Performing IUGWL saves £289 per localization. Conclusion: IUGWL outcomes are comparable to those of PUGWL. IUGWL is cost-effective, patient-friendly and easy to learn and replicate. IUGWL merits wider dissemination and further planned research.

Wired for Surgical Success: Our Experience with Preoperative Ultrasound-Guided Wire Localization of Impalpable Breast Lesions.

Aims The purpose of this study was to review our experience with preoperative ultrasound-guided wire localization and to identify our rate of successful localization and subsequent excision. Materials and Methods At our institution, we performed preoperative wire localization for 28 impalpable breast lesions in 27 women (1 patient underwent wire localization for bilateral breast lesions), between April 2016 and August 2019. We used a Toshiba APLIO2 ultrasound machine and a linear probe (7–12 MHz) to visualize lesions and needle-wire systems comprising a 20-gauge needle with preloaded wire to localize lesions. We analyzed the percentage of specimen mammograms with wire in situ and percentage of excised specimens showing margins free of tumor, along with imaging features, BI-RADS (Breast Imaging-Reporting and Data System) categories, and histopathological and molecular diagnosis of the lesions. Results All specimen mammograms confirmed the presence of wire in situ, except one (96.4%); in the latter case, postponement of surgery due to intractable cough was suspected to have caused wire displacement. All malignant specimens showed margins free of tumor (100%). Conclusions Our results show that wire localization is extremely effective in providing crucial preoperative insight into the precise location of an impalpable lesion. Despite the advent of nonwire localization devices such as radioactive seeds, radar reflectors, magnetic seed markers, and radiofrequency identification tags, wire localization remains the most widely practiced method, especially in resource-limited settings. Its high degree of accuracy serves as a key factor in the successful outcome of breast conservation surgery for impalpable breast lesions.

Diagnosis and surgical treatment of pathologic nipple discharge using ultrasound‐guided wire localization of focal ductal dilatation

Nipple discharge is the third breast complaint after pain and lumps. The modern high-resolution ultrasound techniques are becoming more sensitive for the visualization of intraductal changes especially focal ductal dilatation (FDD), hypothesized as a radiographic manifestation of the lesion itself and that ultrasound-guided wire localization of this finding would enable identification and excision of the causative lesion. The aim of this study was to evaluate the safety, feasibility, efficiency and outcome of ultrasound-guided wire localization of FDD as possible cause of pathological nipple discharge (PND). The present study was conducted on 56 patients with PND presented to Surgical Oncology Unit at General Surgery Department, Tanta University Hospital from January 2018 to January 2019. The patients subjected to ultrasound-guidedwire localization of FDD on the day of surgery, the involved duct was cannulated with a lacrimal duct probe, the targeted tissue was excised, and the specimen was sent for histopathological examination. The patients' age ranged between 26 and 71years with a mean age of 48years. The bloody nipple discharge was the commonest presenting symptom in 44 out of 56 patients (78.5%). The duct dilatation on study ultrasound ranged from 2.1 to 3.7mm with a mean of 2.6mm. Preoperativeultrasound-guidedwire localization of the site of FDD was successfully performed in all cases. Papilloma alone founded in 40 out of 56 patients (71.4%), papilloma+ductal carcinoma in situ (DCIS) in six patients (10.7%), papilloma+invasive ductal carcinoma in six patients (10.7%), DCIS in two patients (3.6%) and duct ectasia in two patients (3.6%). Ultrasound-guided wire localization of FDD is an easy and safe technique for evaluation, precise localization, and targeted excision of the underlying lesions of PND.

Pre-operative ultrasound guided wire localization for recurrent or persistent thyroid disease: A series of four cases

IntroductionSuccessful pediatric revision thyroid surgery depends primarily on effective localization of recurrent or persistent lesions. Secondary to fibrosis and scarring, blind regional dissection can fail to retrieve the tissues of concern. Conventionally, high resolution CT or ultrasound of the neck has been used to map lesions within the thyroid bed. The success rate of excising recurrent lesions using these mapping techniques is at best 80%. We present a small series of patients in which hook wire localization was used to help localize and excise recurrent and/or persistent neck disease during secondary operations. MethodsThe wire-localization technique was utilized for a prospective case series of four pediatric patients with history of previous thyroidectomy and recurrent or persistent malignant thyroid disease. ResultsAll four patients had recurrence or persistence of their disease process in the central or lateral neck. Patients successfully underwent preoperative hook wire localization of their persistent or recurrent neck lesions with successful subsequent neck dissection. Each case involved a single wire localization for a unique mass, equally a total of 4 lesions accessed by the technique over the four cases. The ultrasound-guided wire-localization technique assisted in the localization and excision of non-palpable lesions. No complications were seen in our small series as a result of this technique. ConclusionHook wire localization may be a useful tool to help the surgeon more efficiently localize and excise recurrent or persistent disease in a scarred/previously operated field.

Wire localization of clip-marked axillary lymph nodes in breast cancer patients treated with primary systemic therapy

IntroductionClipping and selective removal of initially suspicious axillary lymph nodes in breast cancer patients who have been sonographically down-staged by primary systemic therapy improves the accuracy of surgical staging and provides the opportunity for more conservative axillary surgery. This study evaluated whether preoperative ultrasound-guided wire localization of the clipped node is useful for routine clinical practice. Material and methodsThis prospective, single-center feasibility trial included patients with invasive breast cancer (cT1-3N1-3M0) treated by primary systemic therapy. They underwent ultrasound-guided core needle biopsy and clip placement into the most suspicious axillary lymph node prior to chemotherapy. After primary systemic therapy the clipped lymph node was localized by a wire. All patients underwent target lymph node biopsy, completion axillary lymph node dissection and, if yiN0, axillary sentinel lymph node biopsy. The primary study endpoint was the identification rate of the target lymph node. ResultsAll patients (n = 30) underwent successful clip insertion into the lymph node. After chemotherapy, the clipped target lymph node was visible by ultrasound in 83.3% (25/30). Wire localization was possible in 24 cases (80%), and the clipped node identification rate was 70.8% (17/24 cases). In 9/30 patients (30%) clipped node removal was not confirmed by intraoperative radiography. ConclusionUltrasound-guided wire localization of the target lymph node is not suitable for clinical practice because of limitations regarding clip visibility and selective surgical preparation of the target lymph node. Further prospective evaluation of alternative techniques is needed.

Ectopic breast localization wire in the pleural cavity: A case report.

Ultrasound is an easily accessible and cost-effective imaging method that is not associated with radiation exposure. Ultrasound-guided wire localization is a reliable method for resecting non-palpable breast lesions. Preoperative ultrasound-guided wire localization has the advantage of a shorter operative time, and the breast lesions may be accurately excised with less tissue injury. We herein report an unusual case of an ectopic breast localization wire in the pleural cavity in a 47-year-old female patient with a history of right-sided breast cancer, who received left segmental mastectomy due to a newly identified left-sided breast lesion. The wire was identified with intraoperative X-ray and computed tomography imaging and was successfully removed under thoracoscopic guidance. The patient recovered uneventfully. To the best of our knowledge, this is the first report on localization wire-related complications in the English literature.

Preoperative Ultrasound-Guided Wire Localization of the Lateral Femoral Cutaneous Nerve.

Difficulty and sometimes inability to find the lateral femoral cutaneous nerve (LFCN) intraoperatively is well known. Variabilities in the course of the nerve are well documented in the literature. In a previous paper, we defined a tight fascial canal that completely surrounds the LFCN in the proximal thigh. These 2 factors sometimes render finding the nerve intraoperatively, to treat meralgia paresthetica, very challenging. To explore the use of preoperative ultrasound to minimize operative time and eliminate situations in which the nerve is not found. Since 2011, we have used preoperative ultrasound-guided wire localization (USWL) in 19 cases to facilitate finding the nerve intraoperatively. Data were collected prospectively with recording of the timing from skin incision to identifying the LFCN; this will be referred to as the skin-to-nerve time. In 2 cases, the localization was incorrect. In the 17 cases in which the LFCN was correctly localized, the skin-to-nerve time ranged from 3 min to 19 min. The mean was 8.5 min, and the median was 8 min. Preoperative USWL is a useful technique that minimizes the time needed to find the LFCN. For the less experienced surgeon, it is extremely valuable. For the experienced surgeon, it can identify anatomical abnormalities such as duplicate nerves, which may not be readily recognizable without ultrasound. Collaboration between the surgeon and the radiologist is very important, especially in the early cases.

A technical note: pre-operative ultrasound-guided wire localization in head and neck surgery

Ultrasound-guided wire localization of impalpable lesions is a well-recognized technique in the management of breast pathology, but its use in the head and neck is not well described. Performed under local anesthesia, high-resolution ultrasound provides real-time imaging for accurate placement of the wire resulting in fewer complications. Wire localization can focus the surgical approach, which reduces operating time and minimizes trauma to surrounding tissues. In this technical note, we describe two cases of pre-operative ultrasound-guided wire localization to facilitate the surgical excision of impalpable neck lesions.