RESUMO
BACKGROUND: To prospectively determine the feasibility of sentinel lymph node biopsy (SLNB) in preoperatively diagnosed multiple unilateral synchronous invasive breast cancers. PATIENTS AND METHODS: The Interest of Axillary Sentinel Lymph Node Biopsy in Multiple Invasive Breast Cancer (IGASSU) study was a prospective multi-institutional study with initial breast surgery, SLNB, and systematic axillary lymph node dissection (ALND). Patients eligible for the IGASSU study had an operable invasive multiple synchronous tumor (MST), defined as two or more physically separate invasive tumors in the same or different quadrant. RESULTS: From 1 March 2006 to 31 August 2007, 216 patients were prospectively included from 16 institutions. Of these patients, 211 were assessable. The SLNB-identified rate was 93.4% (197 of 211). The false-negative rate (FNR) was 13.6% (14 of 103) [95% confidence interval (CI) 7% to 20%], and the accuracy was 92.9% (183 of 197) (95% CI 89% to 96%). In a univariate analysis, tumor location (only external location versus other location) was the only clinicopathological factor influencing the FNR [22% (11%-33%) versus 7% (4%-10%)], even then median aggregate histological tumor size was smaller in external tumors [17 mm (range 12-80 mm) versus 34 mm (range 8-90 mm), P = 0.016]. CONCLUSION: With a FNR of 13.6%, we do not recommend SLNB as a routine procedure for MST, even for small tumor.
Assuntos
Neoplasias da Mama/patologia , Biópsia de Linfonodo Sentinela , Adulto , Idoso , Reações Falso-Negativas , Estudos de Viabilidade , Feminino , Humanos , Pessoa de Meia-Idade , Estudos Prospectivos , Fatores de RiscoRESUMO
One or more repeat operations were necessary to obtain full recovery in 11 out of 350 patients receiving surgery for hyperparathyroidism. Analysis of factors, sometimes multiple, leading to failure showed: poor surgical technique (3 cases), typical (2 cases) or rare (3 cases) ectopias, a supernumerary gland (2 cases), or lack of recognition of hyperplasia of the total parathyroid system (3 cases). Indications for and tactical modalities of reoperation are discussed, and emphasis placed on the unreliability of techniques employed pre-operatively to locate the diseased gland, the very rare need for sternotomy (1 case), and the remarkable possibilities of parathyroid autografts (4 cases). (4 cases).
