[Cyst of the ejaculatory duct]

Presentation of a new case of cyst of the ejaculatory duct, diagnosed in a 49-year-old patient. Unspecific symptomatology, with hemospermia and urethrorrhagia of 6 months evolution. Diagnosis is reached by abdominal and transrectal ultrasound and deferent-vesiculography. Computerized Axial Tomography and Magnetic Nuclear Resonance are performed to document the case and for subsequent follow-up. No other associated malformations are found. Following failure of endoscopic surgery, the original approach, abdominal exeresis is performed with excellent evolution both in the immediate post-operative and at 1-year follow-up. Likely etiology and differential diagnosis from other male pelvic cysts are discussed. List of references on differential diagnosis and published cases in included.

[Percutaneous nephrolithotomy for coralliform lithiasis in a patient with bilateral triplicated ureters]

We report on a rare case of bilateral ureteral triplicity with a definitive urinary diversion (Brickner loop ureteroileostomy) who presented a staghorn stone in the upper calyx of the left kidney. The patient was submitted to percutaneous nephrolithotomy with direct access to the upper calyx of the anomalous kidney. We discuss the indication for this treatment, which resolved the lithiasis in a single session and with no complications. Furthermore, this treatment modality is compared with ESWL and open surgery, which we reserve for failures or those cases where the percutaneous approach is contraindicated. Percutaneous nephrolithotomy can be considered a therapeutic alternative for lithiasis in patients with congenital malformation and/or urinary diversion.

Analysis and prediction of the population in Spain: 1910-2000

"The starting hypothesis of this paper was the actual occurrence of important interactions between demographic and socio-economic factors when trying to reach population forecasts that may be more efficient than those obtained by mere extrapolative methods. In order to be able to implement this approach to the Spanish case it has been necessary to reconstruct first the Spanish population series by age and sex groups from 1910 to 1980. Later, we proceed to obtain population forecasts using alternative modeling strategies and comment on the potential problems that the new demographic situation may have for future public policy."