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Krishna B Clough

Publications and source records attributed to Krishna B Clough.

12 recordsLinked to original sources
PubMed2005

Stereotactic radioguided surgery by siteSelect for subclinical mammographic lesions.

BACKGROUND: We defined the indications for and evaluated the results of a new technique for radioguided surgery, the SiteSelect system. The procedure allows en-bloc resection of the breast parenchyma under local anesthesia. METHODS: This prospective study was based on 167 patients operated on between December 2000 and October 2003 with 2 phases. The first step was an evaluation of the feasibility of the procedure with the 15-mm cannula, and the second was therapeutic with the 22-mm cannula. RESULTS: The mean duration of the procedure was 42 minutes. In 96.9% of procedures, the lesion was excised successfully. Only one complication (hematoma) and two failures and were observed. Histological examination revealed benign disease in 65.8% of cases and cancer in 34.2% of cases. In the latter cases, the specimen margins were histologically involved in 86.2% of cases with the 15-mm procedure and in 41% with the 22-mm procedure. During the first evaluation, all patients with a cancer underwent systematic surgical re-excision: residual tumor was present in 18 cases (64.2%). The biopsy was painless for 88 patients, and the cosmetic result was good in all cases. CONCLUSIONS: This study shows that the SiteSelect procedure allows resection of the lesion in 96.9% of cases. Combined with complementary surgical lumpectomy during the same operation, this procedure achieved a success rate of 98.7%. In the case of cancer, the 15-mm cannula is not wide enough to allow free margins. The use of a new 22-mm cannula, currently under evaluation, might solve this problem.

Adult↗
PubMed2004

Histological margin assessment for breast ductal carcinoma in situ: precision and implications.

Local recurrence after lumpectomy for ductal carcinoma in situ (DCIS) is a major concern and is related to residual disease in the breast. We studied the predictive value of lumpectomy margins for residual DCIS and compared our results and pathological processing techniques with those published in the literature. Margin status was determined for 89 patients with screen-detected DCIS who had lumpectomy and re-excision, for the presence and extent of residual disease. Margin width was defined as the narrowest distance between tumor and any inked margin or, where margins were positive, classified into focal involvement (<1 mm of the inked surface involved), minimal (>or=1<15 mm) and extensive (>or=15 mm). The amount of residual tumor was quantified according to the number of ducts involved with tumor: small (fewer than 10 ducts) or large (10 or more ducts) residuum. The initial margin status was a significant predictor for the presence of residual tumor in re-excision specimens (P=0.006). There was residual tumor in 44 and 45% of close non-involved (>1 and 25 mm,respectively, showing residual disease. The presence of residual tumor was not significantly related to age, mammographic appearance, nuclear grade or intraductal necrosis. The initial margin status was found to predict for the amount of residual tumor. With careful margin assessment, margin status after lumpectomy for DCIS can be used to predict for the presence and amount of residual tumor in the breast and is a guide to further management decisions. A standard for margin status reporting and pathological processing of screen-detected DCIS in situ lesions will help in the interpretation of data from different institutions.

Adult↗
PubMed2004

Reconstruction after conservative treatment for breast cancer: cosmetic sequelae classification revisited.

Patients with suboptimal results following breast conservative therapy are presenting more frequently to plastic surgeons as a difficult management problem. A three-type "cosmetic sequelae classification" is proposed to evaluate and manage these patients. From February of 1991 to November of 2001, 85 patients were treated for cosmetic sequelae of breast conservative therapy at the Institut Curie. The patients were followed up prospectively for 6 to 132 months (median, 33 months). They were assessed with regard to age, site and stage of tumor, type of initial breast conservative therapy undertaken, corrective operative procedures performed, complications, and cosmetic results. Forty-eight patients (56.5 percent) had type 1 cosmetic sequelae, 33 patients (38.8 percent) had type 2, and four patients (4.7 percent) had type 3. Type 1 was managed by contralateral symmetrizing procedures. Type 2 was the most difficult to manage by means of various procedures. Type 3 required mastectomy and immediate breast reconstruction. Type 1 had 97.6 percent good results compared with 82.7 percent for type 2. Three of the four type 3 patients had good results. This article reaffirms the validity of the cosmetic sequelae classification as a simple, practical guide for breast reconstructive surgeons. It discusses the various choices of reconstructive procedures available, the importance of preventing these cosmetic sequelae, and the role of the plastic surgeon in the planning of conservative treatment of breast cancers.

Adult↗
PubMed2003

Oncoplastic techniques allow extensive resections for breast-conserving therapy of breast carcinomas.

OBJECTIVE: To assess the oncologic and cosmetic outcomes in women with breast carcinoma who were treated with breast-conserving therapy using oncoplastic techniques with concomitant symmetrization of the contralateral breast. SUMMARY BACKGROUND DATA: Although breast-conserving therapy is the standard form of treatment for invasive breast tumors up to 4 cm, in patients with large, ill-defined, or poorly situated tumors, cosmetic results can be poor and clear resection margins difficult to obtain. The integration of oncoplastic techniques with a concomitant contralateral symmetrization procedure is a novel surgical approach that allows wide excisions and prevents breast deformities. METHODS: This is a prospective study of 101 patients who were operated on for breast carcinoma between July 1985 and June 1999 at the Institut Curie. The procedure was proposed for patients in whom conservative treatment was possible on oncologic grounds but where a standard lumpectomy would have led to poor cosmesis. Standard institutional treatment protocols were followed. All patients received either pre- or postoperative radiotherapy. Seventeen patients received preoperative chemotherapy to downsize their tumors. Mean follow-up was 3.8 years. Results were analyzed statistically using Kaplan-Meier estimates. RESULTS: Mean weight of excised material on the tumor side was 222 g. The actuarial 5-year local recurrence rate was 9.4%, the overall survival rate was 95.7%, and the metastasis-free survival rate was 82.8%. Cosmesis was favorable in 82% of cases. Preoperative radiotherapy resulted in worse cosmesis than when given postoperatively. CONCLUSIONS: The use of oncoplastic techniques and concomitant symmetrization of the contralateral breast allows extensive resections for conservative treatment of breast carcinoma and results in favorable oncologic and esthetic outcomes. This approach might be useful in extending the indications for conservative therapy.

Adult↗
PubMed2003

Impact of internal mammary sentinel node imaging in breast cancer.

A 28-year-old woman underwent mammary lymphoscintigraphy for evaluation of the sentinel node status of a small infiltrating ductal carcinoma in the central, lower, and outer quadrant of the left breast confirmed by biopsy. The patient was scheduled for lumpectomy and sentinel node biopsy. Lymphoscintigraphy showed increased uptake at two sites of the peritumorally injected tracer (60 MBq; 1.6 mCi rhenium sulfur nanocolloid) in internal mammary nodes, two of which were located most proximal to the tumor and related to the tumor by two distinct lymphatic ducts. An axillary lymph node was also detected. At surgery, the gamma probe confirmed the location of all the hot spots, and four nodes were harvested: one axillary, two first internal mammary nodes in the third intercostal space, and one internal mammary node in the second intercostal space. Histologic analysis revealed that the axillary sentinel node was free of disease, but the two first intramuscular sentinel nodes were metastatic. The second-echelon internal mammary node above the sentinel nodes (second intercostal space) was free of disease. This case shows the benefit of imaging all the drainage pathways of a breast tumor and retrieving nonaxillary lymph nodes, which may be the only positive nodes. As a result of the findings, the patient's prognosis may be altered and the subsequent therapeutic approach may be modified. Although exclusive involvement of the internal mammary chain is well established and relatively rare (occurring in approximately 5% of cases), it is important to remember that the axillary status of a breast tumor is not the only major prognostic factor.

Adenocarcinoma↗
PubMed2003

Macroscopic quality control improves the reliability of blue dye-only sentinel lymph node biopsy in breast cancer.

BACKGROUND: One of the problems of sentinel lymph node (SLN) biopsy is the risk of false negatives. At the Institut Curie, to reduce the false-negative rate, we have developed a histological quality control of the SLN performed by blue dye alone, which consists of verification of the SLN blue stain by the pathologist. METHODS: A total of 324 patients underwent an SLN biopsy procedure with patent blue dye only followed by an immediate axillary dissection. Initially, SLNs were checked to ensure that they were blue by macroscopic examination. Finally, a search for immunohistochemistry micrometastasis was performed. RESULTS: In 277 (85.5%) of 324 patients, an SLN was identified by the surgeon. After standard examination, the false-negative rate was 11.1% (10 of 90). After macroscopic checking of the 197 negative SLNs, 167 of the 197 were confirmed blue, and there were 5 false negatives, which brought the false-negative rate down to 5.6% (5 of 90). Sixty SLNs out of the 167 confirmed blue SLNs were then proved to be immunohistochemically micrometastatic, and there were 3 false negatives, giving a final false-negative rate of 2.2% (2 of 90; P =.002). CONCLUSIONS: In this series, the procedure of pathologic analysis of the SLN has resulted in a significant reduction of the false-negative rate.

Adult↗
PubMed2002

Donor site sequelae after autologous breast reconstruction with an extended latissimus dorsi flap.

The indications for autologous reconstruction are increasing. The standard procedure is the transverse rectus abdominis muscle flap; however, this flap has contraindications and drawbacks. The latissimus dorsi muscle flap is simple and reliable. Hokin et al. demonstrated in 1983 that this flap can be extended and used for breast reconstruction without an implant. Since then, it has been widely studied in this setting and is known to provide good aesthetic results. Dorsal sequelae, conversely, were not appraised. The aim of this study was to assess objective and subjective dorsal sequelae after the harvest of an extended flap. Forty-three consecutive patients who had had breast reconstruction with an autologous latissimus dorsi flap were assessed by a surgeon and a physiotherapist for muscular strength and shoulder mobility. Patient opinion was studied through a questionnaire. Mean delay between the operation and the evaluation was 19 months. Early complications, mainly dorsal seromas, were frequent after the harvest of an extended flap (72 percent). There was no late morbidity and, especially, no flap loss or partial necrosis. As for functional results, 37 percent of the patients had complete adjustment and 70 to 87 percent demonstrated no change in shoulder strength. Sixty percent of the patients experienced no limitation in everyday life, and 90 percent said they would undergo this procedure again. The authors show that dorsal sequelae after an extended latissimus dorsi flap are minimal and that this technique compares favorably with the transverse rectus abdominis muscle flap.

Adult↗
PubMedDate not supplied

[Routine sentinel node detection in breast cancer. Experience of the Curie Institute].

Since January 2000, sentinel lymph node detection is routinely performed at the Institut Curie, involving a multidisciplinary team of trained surgeons, nuclear medicine physicians, radiologists and pathologists. During a three-year period, 738 patients undergoing tumorectomy with conservative surgical treatment of the breast were included in the sentinel node procedure consisting of systematic pre-operative tumor biopsies, peritumoral lymph tracer injections at tumor contact (radionuclide/blue dye), primary surgical removal of the first sentinel lymph node, frozen section diagnosis, followed by a standardized pathological analysis, and finally the application of precise criteria to determine whether further surgery is necessary. This article is an evaluation of the sentinel lymph node technique in a specialized Center providing a breakdown of the strong points and weak points of the procedure.

Adult↗