Patrick François

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Virtually all models of the household have the minimal implication that the equilibrium allocation of resources is Pareto efficient. Within many African households, agricultural production is simultaneously carried out on many plots controlled by different members of the household. Pareto efficiency implies that variable factors should be allocated(More)
The evidence that the same income can lead to different household decisions, depending on who the earner is, has led to an effort to replace the standard household model with the collective model , which recognises that a household’s decisions depend on the power balance between the husband and the wife. This article recognises that the power balance can,(More)
CONTEXT To date only 18 patients with aggressive pituitary tumors or carcinomas treated with temozolomide have been reported. Increased expression of O6-methylguanine-DNA-methyltranferase (MGMT) has been suggested to predict resistance to temozolomide. OBJECTIVES The objective of the study was to describe the antitumoral efficacy and toxicity of(More)
Central neurocytoma (CN) is a rare intraventricular tumor presenting a benign histologic appearance and favorable prognosis after surgery. In contrast, "atypical" CN is defined by a high MIB1 proliferation index and/or histologic features of malignancy, which are associated with a poorer outcome. This variant of CN remains somewhat controversial. To better(More)
Pituitary adenomas are currently classified by histological, immunocytochemical and numerous ultrastructural characteristics lacking unequivocal prognostic correlations. We investigated the prognostic value of a new clinicopathological classification with grades based on invasion and proliferation. This retrospective multicentric case–control study(More)
Medical treatment of endocrine pituitary tumors with somatostatin analogs depends on tumor type and somatostatin receptor (SSTR) expression. Immunohistochemical detection of these receptors using polyclonal antibodies has given conflicting results. We studied the expression of SSTR(2A) and SSTR(5) with new procedures in 108 pituitary tumors. Using 2 new,(More)
It is shown here that despite the efficiency gains from privatization, when markets are incomplete, all individuals may be made worse off by privatization, even when the resource is equitably privatized. Such market incompleteness is common in the developing world and can explain the often encountered resistance to efficiency enhancing privatizing reforms,(More)
According to the World Health Organization classification of pituitary tumors, only tumors with systemic metastasis must be considered as carcinomas. Invasive tumors with multiple recurrences are only classified as aggressive tumors or “atypical adenomas”. To illustrate the problems encountered in the pathological diagnosis of pituitary carcinoma and in(More)