Simonetta Monti

Occult breast lesion localization plus sentinel node biopsy (SNOLL): Experience with 959 patients at the European Institute of Oncology

BackgroundNon-palpable breast lesions are diagnosed frequently posing the problem of localization and removal. When such lesions are malignant, axillary node status must be determined. We report our experience using radio-guided occult lesion localization (ROLL) for locating and removing non-palpable breast lesions together with sentinel node biopsy (SNB) to assess axillary status. We call the technique SNOLL.MethodsFrom March 1997 to April 2004, 1046 consecutive patients presented suspicious non-palpable breast lesions and were programmed for conservative surgery and SNB. In 87 patients intraoperative histological examination revealed a benign lesion and SNB was not performed. The remaining 959 patients, with cytologically or histologically proven cancer, underwent SNOLL with immobile radiotracer injected under mammographic or ultrasound (US) guidance into the lesion, and subsequent injection of mobile tracer subdermally to localize the sentinel node (SN). Patients then underwent breast surgery and SNB.ResultsBreast lesions were localized by ROLL in 99.6% of cases and were removed radically with negative margins in 91.9% of cases. Sentinel nodes were detected in all but one case. Intraoperative or definitive histological examination revealed 776 invasive/microinvasive carcinomas and 182 with in situ disease. Sentinel nodes were positive in 154 (19.8%) of 776 invasive/microinvasive cancers and in two with ductal intraepithelial neoplasia (1.1%).ConclusionsIn SNOLL the injection procedures are performed separately, but both lesion and SNs are removed together; axillary dissection is performed if the SN is positive, thus definitive treatment of malignant non-palpable lesions occurs in a single surgical session.

Breast cancer subtypes and outcome after local and regional relapse

BACKGROUND To evaluate the outcome of breast cancer patients after locoregional recurrence (LRR) according to tumor biological features evaluated at first diagnosis and at the time of recurrence. PATIENTS AND METHODS We collected information on all consecutive breast cancer patients operated at the European Institute of Oncology between 1994 and 2005. The tumor characteristics and subsequent outcome of patients who experienced LRR were analyzed. RESULTS Two hundred and seventy nine patients with LRR were identified, 197 and 82 patients with local and regional recurrence respectively. The overall discordance rate between primary cancer and LRR was 9% for estrogen receptor expression, 22% for progesterone receptor and 4% for human epidermal growth factor receptor 2. For patients with regional recurrence, the risk of distant metastasis was significantly higher compared with local relapse in case of late recurrence (hazard ratio [HR] = 2.76; 95% CI 1.31-5.85). Patients with triple-negative breast cancer at LRR experienced a higher risk of subsequent relapse (HR 2.87 [1.67-4.91]) and death (HR 2.00 [1.25-3.19]). CONCLUSION LRR correlates with a high risk of subsequent events and death in particular in patients with triple-negative subtype.

Clinical experience with axillary presentation breast cancer

We present our experience of 50 cases of occult primary tumours presenting as axillary metastases, all with histological report of adenocarcinoma compatible with mammary carcinoma. After bilateral US and mammography, with MRI and mammoscintigraphy where necessary, ipsilateral breast cancer was suspected in 23 cases and quadrantectomy performed. Breast cancer was found only in 12 (24%). In the other 27 women there was no clinical or instrumental suspicion of breast cancer or other primary disease site, so the main treatment was complete axillary dissection plus radiotherapy to the ipsilateral breast (given to all patients). Chemotherapy alone was given to 27 patients, hormone treatment to 5 patients, and both to 18. Mean follow-up is 41.3 months (range 108–1). Thirty-nine (84%) patients are alive with no evidence of disease, two are alive with breast disease, five patients have died of metastatic disease (with no evidence breast disease). Our experience, like that of the literature, confirms that the breast should be extensively investigated but that blanket investigations are not usually revealing. We present guidelines for the work-up of patients presenting with axillary disease.

Immediate breast reconstruction in the elderly: can it be considered an integral step of breast cancer treatment? The experience of the European Institute of Oncology, Milan

BACKGROUND In the last few decades, breast reconstruction often has not been offered to the elderly population due to the reluctance of clinicians concerned about serious co-morbidities. This study aims to demonstrate that breast reconstruction is feasible and safe in the elderly cohort. METHODS Between 1999 and 2004, 63 elderly patients underwent an immediate reconstruction after breast cancer treatment at the European Institute of Oncology. A conservative treatment, combined with breast repair by plastic surgical techniques, was performed in 14 patients. In the remaining 49 patients, a modified radical mastectomy was necessary in 30 breasts, a total mastectomy in 19, a subcutaneous mastectomy in one case and a radical mastectomy in one patient. Three nipple-sparing mastectomies, along with intra-operative radiotherapy, were performed in two patients. A definitive silicone implant was used in 41 breasts and a skin expander in eight cases. A latissimus dorsi flap was performed in two patients, a pedicled transverse rectus abdominis muscle (TRAM) flap in two cases and a local advancement fasciocutaneous flap in another two patients. RESULTS In all patients, surgery was well tolerated despite patient age. No systemic and medically unfavourable events occurred in the immediate and late postoperative period. Infection occurred in four patients (6.34%) and partial necrosis of the mastectomy flaps in three cases (5.5% of the mastectomies). Capsular contracture grade III and IV was reported in four cases (8.89%). Total implant removal was rated 12.24%, due to infection (three prostheses), exposure (one expander) and capsular contracture grade IV (two implants). CONCLUSIONS Implant-based technique of breast reconstruction should be made available to the elderly population.

Nonpalpable Breast Carcinomas: Long-Term Evaluation of 1,258 Cases

INTRODUCTION In recent decades, a steady improvement in imaging diagnostics has been observed together with a rising adherence to regular clinical breast examinations. As a result, the detection of small clinically occult (nonpalpable) lesions has progressively increased. At present in our institution some 20% of the cases are treated when nonpalpable. The aim of the present study is to analyze the characteristics and prognosis of such tumors treated in a single institution. METHODS The analysis focused on 1,258 women who presented at the European Institute of Oncology with a primary clinically occult carcinoma between 2000 and 2006. All patients underwent radioguided occult lesion localization (ROLL), axillary dissection when appropriate, whole breast radiotherapy, or partial breast intraoperative irradiation and received tailored adjuvant systemic treatment. RESULTS Median age was 56 years. Imaging showed a breast nodule in half of the cases and a breast nodule accompanied by microcalcifications in 9%. Microcalcifications alone were present in 17.1% of the cases, whereas suspicious opacity, distortion, or thickening represented the remaining 24.6%. Most tumors were characterized by low proliferative rates (68.9%), positive estrogen receptors (92.3%), and non-overexpressed Her2/neu (91.3%). After a median follow-up of 60 months, we observed 19 local events (1.5%), 12 regional events (1%), and 20 distant metastases (1.6%). Five-year overall survival was 98.6%. CONCLUSIONS Clinically occult (nonpalpable) carcinomas show very favorable prognostic features and high survival rates, showing the important role of modern imaging techniques.

Sentinel node biopsy interpretation: The Milan experience

Abstract: From March 1996 to December 1999 we performed 1,266 sentinel node biopsies (SNBs) in patients with small breast cancers. The technique is to inject technetium 99m‐labeled albumin particles close to the tumor, locate the sentinel node (SN) scintigraphically, and use a handheld gamma‐detecting probe to guide its removal via a small incision during breast surgery. Our experience was divided into three phases. In the first phase, complete axillary dissection was performed to assess the accuracy of SNB in predicting axillary status. We also assessed safety, perfected tracer injection technique, determined optimal particle size and radioactivity levels, optimized lymphoscintigraphic scanning, and perfected the surgical technique. The SN was identified and removed in 98.7% of cases. Comparison with complete axillary dissection showed that the SN predicted axillary status in 96.8% of cases. However, use of an intraoperative frozen section method predicted axillary status in only 86.5% of cases. In the second phase we developed a new method for intraoperative histologic analysis. Extensive sampling (up to 60 sections/SN) and an experienced pathologist proved more important than use of antikeratin immunostaining in identifying tumor cells, and the new method has the accuracy of a definitive histologic examination. The third phase, a randomized trial, closed at the end of 1999. Trial objectives were to confirm that the SN predicts axillary status, to determine the number of axillary relapses, and to assess overall and disease‐free survival. Patients were randomized in the operating room to complete axillary dissection or SNB. If the SN was positive, complete axillary dissection was performed; if the SN was negative, no further axillary treatment was given. We expect the trial to confirm our clinical experience that SNB is a safe and accurate procedure for staging patients with early breast cancer and a clinically negative axilla.

Less aggressive surgery and radiotherapy is the way forward.

Purpose of review Conserving the breast is one of the main objectives in treating patients affected by carcinoma. This objective should be compatible with good local control to keep the risk of local failures low. The progressive reduction of the extension of surgery in the breast and in the axilla is now accompanied by a reduction of the radiation field. This article provides an update on conservative therapy for breast cancer. Recent findings After the development of quadrantectomy, the effectiveness of sentinel node biopsy was demonstrated in the axillary staging of breast carcinoma. The situation took another step forward with partial breast irradiation. The highest incidence of local relapse after breast-conserving surgery is observed in the same area as the primary tumor. This factor provides the rationale for reducing the radiation field to a limited area of the breast primarily affected by carcinoma. Summary The Milan I trial on breast conservative surgery provided definitive confirmation of the equivalence of quadrantectomy, followed by radiotherapy, to mastectomy in terms of local control of disease. The randomized trial on sentinel node biopsy demonstrated the effectiveness of this procedure in axillary staging of breast carcinoma. Radiotherapy is currently under investigation in terms of limiting the radiation field to the affected quadrant of the breast by means of various techniques.

Can axillary and supraclavicular radiotherapy be avoided after breast-conserving surgery and axillary dissection in women with multiple involved axillary nodes? Experience at the European Institute of Oncology.

AIMS AND BACKGROUND Although some guidelines recommend adjuvant radiotherapy (RT) to the axilla and supraclavicular nodes if 4 or more axillary nodes are involved, the current practice at our Institute is not to irradiate the axilla but to perform complete axillary dissection in which all 3 Berg levels are removed. We performed a retrospective analysis of patients with 4 or more axillary nodes involved and sufficient follow-up to provide indications as to whether our current treatment is adequate. METHODS We retrospectively analyzed 287 T1-T3 patients with a median follow-up of 5 years and 4 or more involved nodes treated by quadrantectomy and breast RT but no axillary RT; supraclavicular RT was given only when prognostic factors were unfavorable. RESULTS A total of 170 (59.2%) patients did not receive supraclavicular RT, while 117 (40.8%) patients received supraclavicular irradiation. No patient received axillary RT. After a median follow-up of 5 years (range, 4-105 months), 4.7% had died and 13.5% had developed distant metastases in the no supraclavicular RT group, compared to 12.0% dead (P = 0.028 log rank) and 24.8% (P = 0.201 log rank) in the supraclavicular RT group. No patients with supraclavicular RT developed supraclavicular metastases compared to 4 in the no supraclavicular RT group. There were no axillary recurrences. CONCLUSIONS Complete axillary dissection appears adequate treatment in patients with 4 or more involved nodes. The low breast recurrence rate also suggests that breast conservation is adequate treatment in such patients. Supraclavicular RT appears to reduce the number of supraclavicular metastases but confers no survival advantage. Although a small number of cases were examined in this retrospective single-center series, all received highly uniform treatment.

Overexploring and overtreating the axilla

There have been concerns about overtreating the axilla in women with breast cancer at least since publication of the NSABP B04 randomized trial in 1977 [1]. This trial showed that variations in locoregional treatment e including whether or not axillary lymph node dissection (AD) was performed in clinically node negative patients e had no influence on survival. NSABP B04 has had a major influence on surgical approaches the breast, and may be considered a precursor to trials, published in the succeeding decade [2,3], that established breast-conserving surgery (quadrantectomy, lumpectomy) as standard treatment for early breast cancer. As regards the axilla, although AD could be associated with significant morbidity (lymphedema, pain, nerve damage, etc.) moves to a more conservative surgical approach were hampered by the fact that axillary lymph node status was the most important predictor of long-term survival in breast cancer patients and hence an important guide to further treatment [4]. This problem can be considered to have been solved by the development of sentinel lymph node biopsy (SNB) in the 1990s [5]. SNB is a minimallyinvasive procedure with fewer side effects than AD which

Fibromatosis, a benign breast disease mimicking carcinoma. A case report

Highlights • Fibromatosis is an infiltrating histologically low grade spindle cell proliferation composed of fibroblastic cells with a variable amount of collagen.• The treatment of choice for breast fibromatosis; is primary surgical excision with clean margins.• It is characterized by being locally aggressive but not metastasizing.• Fibromatosis has a high rate of recurrence after surgical excision.• Management of recurrent breast fibromatosis remains controversial because of the low incidence and, in consequence, the limited data.