Donor nephrectomy with laparo-endoscopic single site (LESS) surgery has been reported via the transperitoneal approach. We describe a novel technique of retroperitoneal donor nephrectomy using a single surgical incision in the groin, below the abdominal skin crease or "bikini line". The LESS groin incision offers superior cosmesis, while the retroperitoneal approach has distinct advantages, such as the ability to identify the renal vessels early. The new procedure has been performed in two obese patients (body mass index 32 and 33 kg/m2, respectively). The operative times were 4 and 5 hours, warm ischemic times 135 and 315 seconds, blood loss 100 and 250 mL, and hospitalization 3 and 2 days, respectively. Retroperitoneal LESS donor nephrectomy through a single, inconspicuous groin incision is feasible and safe. Further evaluation of the technique in a larger patient cohort is indicated.

Descrevem-se estruturas muito semelhantes às de Aphelocheirus aestivalis (Fab.) (Messner et al., 1981). Os pêlos plastronais têm forma de folha e encontram-se distribuídos regularmente no plastron. Aberturas muito pequenas nos esternitos e tergitos conectam o ar plastronal com o ar subcuticular, e estão limitadas internamente por uma membrana. A estrutura na zona próxima à traquéia é similar nas duas espécies comparadas, sugerindo relações mais próximas que as aceitas até agora.

Plastron and spiracular features strongly resemble those of Aphelocheirus aestivalis (Fab.), described by Messner et al. (1981). Plastronal foliose hairs, somewhat irregular shaped are regularly distributed in the plastron. Very numerous tiny openigs on sternites an tergites connect platronal air with a subcuticular air film limited internally apparently by a membrane. Aplicated, radial, structure at the proximal end of the tracheae, almost occluding the extremely fine spiracular openings, appear with lesser variations in both species, suggesting close relationships than accepted until now.