In the porcine model the LigaSure system is a viable option for laparoscopic management of arteries up to 6 mm. and veins up to 12 mm. in diameter.

In the porcine model the LigaSure system is a viable option for laparoscopic management of arteries up to 6 mm. and veins up to 12 mm. in diameter.

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Funding for the study was provided by Fundação de Amparo à Pesquisa do Estado de São Paulo (Fapesp) (2007/59423-7) and by the Division of Urology, Human Reproduction Section at the São Paulo Federal University.

The funding for this project was received from the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) as a scholarship for Ms Camargo. There was no conflict of interest.

OBJECTIVE To report and analyse cases of cyctic phaeochromocytoma at our institution and in previous publications, as adrenal cystic masses are usually associated with nonfunctional lesions, but they can be phaeochromocytoma. PATIENTS AND METHODS The prospective adrenalectomy database at our institution was reviewed to identify patients with phaeochromocytoma and cystic lesions. The clinical, radiological and histological features of cystic phaeochromocytoma were evaluated. Other previously published data were identified and compared with the present series. RESULTS In all, there were 107 adrenalectomies at our institution from November 2000 to March 2007; 31 of these patients had a confirmed diagnosis of phaeochromocytoma and six (19%) were cystic phaeochromocytomas. Three of the six cases were asymptomatic and had a negative biochemical evaluation (one male and five females, mean tumour size 6.6 cm); the imaging diagnosis was mainly based on computed tomography and magnetic resonance imaging, and the foremost feature was the enhancement of the tumour rim associated with a central cystic mass. Nine other previously published cases were reviewed. CONCLUSIONS From the present large series and previous anecdotally reported cases, patients with cystic phaeochromocytomas are more likely to be asymptomatic, to complain of chronic abdominal pain, and to have a negative biochemical evaluation, which might deter physicians from conducting a full evaluation for phaeochromocytoma and mislead the final diagnosis. As such, there could be an even higher prevalence of this entity that is yet to be determined.

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In the morbidly obese patient with symptomatic stones <1.5 cm, ureteroscopic lithotripsy is safe, successful, and efficient.