Unusual secondary tumors after childhood lymphoid malignancy.

Second malignant neoplasms (SMN) in individuals who survived childhood cancer have been reported with increasing frequency during the last decades. The overall probability of developing second malignancy for children treated for cancer was estimated at about 2-5% at 25 years. In children, the tumors most often associated with the development of SMN are retinoblastoma and Hodgkin's disease.

HIV-1 and parasitic infections in rural Tanzania.

A sample of 300 sexually-active adults was selected at random from patients, from the rural area of Malenga Makali, Tanzania, who were attending a dispensary because they had diarrhoea of at least 2 weeks' duration. The potential associations between the patient's health (in terms of the World Health Organization's clinical definition of AIDS), HIV-1 seroprevalence and malaria and other parasitic infections were then investigated. Although, HIV-1 seroprevalence was 20.

Diagnostic alternatives to second look in ovarian cancer.

The accuracy of the markers CA 125, CA 15-3, CA 50 serum levels and the CT findings as alternative monitoring techniques to second look has been evaluated in 25 patients. The negative predictive value for the CA 125 was of 55% and its sensibility seems not to be increased by the association of the other markers. For the CT findings we report a diagnostic accuracy of 76%.