BACKGROUND Multiple studies of ovarian cancer and genital talc use have led only to consensus about possible carcinogenicity. Seeking greater clarity, we examined this association in 2,041 cases with epithelial ovarian cancer and 2,100 age- and-residence-matched controls. METHODS We defined genital talc use as regular application to the genital/rectal area directly, on sanitary napkins, tampo...

The flotation and adsorption of a new polysaccharide konjac gum (KG) on pyrite and talc in the presence of pre-adsorbed potassium butyl xanthate (PBX) is investigated. The micro-flotation results show that KG is a quality depressant for talc and that conditioning the minerals initially with PBX before KG will increase the recovery difference between pyrite and talc. The results of artificially ...

A chronic pulmonary granulomatous reaction was associated with an almost identical clinical picture in two patients exposed to talc. In both patients lung biopsy showed the deposition of talc particles and a heavy granulomatous reaction. At the time of diagnosis the Kveim test result was negative in both patients, urinary calcium excretion was normal, and there were no extrapulmonary manifestat...

RATIONALE Talc is very effective for pleurodesis, but there is concern about complications, especially acute respiratory distress syndrome. OBJECTIVES It was the aim of this study to investigate if talc with a high concentration of small particles induces greater production of cytokines, and if pleural tumor burden has any influence on the local production and spillover of cytokines to the sy...

BACKGROUND Perineal talc use has been associated with an increased risk of ovarian cancer in a number of case-control studies; however, this association remains controversial because of limited supporting biologic evidence and the potential for recall bias or selection bias in case-control studies. In this study, we conducted a prospective analysis of perineal talc use and the risk of ovarian c...

In this study, the electromagnetic (EM) performance of talc/NiTiO3 composite was evaluated. The morphology of talc displayed a lamella structure; there were many nanoparticles of NiTiO3 coated on the talc lamella. Thermal destruction occurred, which increased the surface area from 2.51 m2 g-1 to 79.09 m2 g-1 at the calcined stage at 650°C. The presence of NiTiO3 increased dielectric loss and ma...

Perineal talc use has been suggested as a possible risk factor for ovarian cancer based on its structural similarity to asbestos, a known human carcinogen. A population-based epidemiologic case-control study of epithelial ovarian cancer (EOC) was conducted in 22 counties of Central California that comprise the reporting area for 2 regional cancer registries. Telephone interviews were conducted ...

Background: Multiple studies of ovarian cancer and genital talc use have led only to consensus about possible carcinogenicity. Seeking greater clarity, we examined this association in 2,041 cases with epi-thelial ovarian cancer and 2,100 age-and-residence-matched controls. Methods: We defined genital talc use as regular application to the geni-tal/rectal area directly, on sanitary napkins, tamp...

sis, most likely because of the systemic absorption of small-size talc particles [2] . In a multicentre, open-label, prospective cohort study of 558 patients with MPE who underwent thoracoscopy and talc poudrage with 4 g of calibrated French large-particle talc, no patients developed ARDS, although oxygenation deteriorated in the first few days after talc pleurodesis [5] . Other agents that hav...

sis, most likely because of the systemic absorption of small-size talc particles [2] . In a multicentre, open-label, prospective cohort study of 558 patients with MPE who underwent thoracoscopy and talc poudrage with 4 g of calibrated French large-particle talc, no patients developed ARDS, although oxygenation deteriorated in the first few days after talc pleurodesis [5] . Other agents that hav...