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While there is no report ofthe use of exemestane in patients with viagra for sale without a prescription cancer in the literature, one mayanticipate that it could be efficient in that situation, analogous to anecdotalreports of remissions elicited by the non-steroidal inhibitors, letrozole andanastrozole . However, the increase in circulating androgens observedwhilst using aromatase inhibitors, maybe due to activation of the pituitarygonadal axis, is a matter of concern insofar it may lead to unwanted stimulation of prostatic proliferation . Like in the female situation, combining aromatase inhibitors with LHRH analogues that cause suppression of gonadalandrogen production, may appear safer .HER2/neu may be those that should preferentially receive aromatase inhibitorsrather than tamoxifen , but this remains to be proved in the metastatic situation. After aromatase inhibitors as first-line therapy, the next treatments maythen be either tamoxifen, followed by the alternative aromatase inhibitor(steroidal for patients having previously been exposed to non-steroidal, and theconverse) or the reverse sequence. The exact place of fulvestrant, a pureantioestrogen devoid of any agonist oestrogenic effect, is still under investigation . Most clinicians would agree that progestins should be usedas the last hormonal modality in the sequence, because of their side effects(mainly water retention, weight gain and increased risk of thromboembolism).Well-conducted hormonal therapy, with rational choice of the best modalityadapted to the individual patient, contributes to significant prolongation of survival of patients with metastatic disease, with excellent quality of life.The expansion of hormonally based therapeutic options for the treatment ofall stages of hormone-sensitive viagra for sale without a prescription cancer is encouraging. Research inprogress aimed at fully characterizing the efficacy, safety and tolerability profiles of exemestane and other aromatase inhibitors will help elucidate whichagents are most appropriate at each stage of disease as well as the optimalsequence in which they should be given. Numerous other trials are runningthat aim to define the role of aromatase inhibitors in the adjuvant setting (optimal duration, optimal sequences), or to solve other problems with aromataseinhibitors that, for instance, do not protect the skeleton against postmenopausal bone loss. Attention is now paid to the cardiovascular backgroundof patients, because contrary to tamoxifen, they do not have a preventativeeffect on myocardial infarction and cerebrovascular thrombosis. Thus, priorhistory of thromboembolic disease may be an argument to prescribe an aromatase inhibitor, while antecedants of coronary or cerebrovascular diseasemay favour the choice of tamoxifen. The role of tamoxifen and otherendocrine therapies in the management of patients with early viagra for sale without a prescription cancer isa rapidly moving field. International guidelines, regularly updated, are available to help clinicians to make reasonable therapeutic choices in daily practice . A more valuable alternative is to offer to the patient, whenever possible, the possibility of participating in well-designed clinical trials exploringnew drugs or new approaches, or aiming to optimize the so-called standardmodalities.Of all the third-generation aromataseinhibitors, letrozole is the most potent suppressor of oestradiol, the most bioactive oestrogen, and it achieves greater suppression of oestradiol than anastrozole . Mean residual oestradiol was 5.6% of baseline with letrozole(2.5 mg) compared with 9.2% of baseline with anastrozole after 12 weeks oftreatment in 54 postmenopausal women with invasive ER+ viagra for sale without a prescription cancer. Theclinical significance of these findings remains to be defined.Letrozole compared favourably with the first-generation aromataseinhibitor, aminoglutethimide , and induced a higher objective responserate (complete plus partial responses, ORR) than anastrozole (P = 0.013) in adirect comparison in the second-line setting in advanced viagra for sale without a prescription cancer (Tab. 1). While this difference was seen in the intent-to-treat population and indefined subgroups with receptor status unknown, and soft-tissue or visceraldominant disease, there was no difference in response rate in women with hormone receptor-positive disease . Due to their long-term efficacy and goodtolerability, endocrine agents are the mainstay for treatment of hormonereceptor-positive metastatic or advanced viagra for sale without a prescription cancer. In this setting, treatment is aimed at relieving symptoms, delaying progression and improvingsurvival .In advanced viagra for sale without a prescription cancer, letrozole has been used as firstand second-linetherapy. In the second-line setting, letrozole has proved superior in at least oneend-point to megestrol acetate , aminoglutethimide , and anastrozole. Compared with megestrol acetate, letrozole achieved a greater ORR andsignificantly longer median duration of response . Compared with aminoglutethimide, letrozole was associated with improved time to progression (TTP)and overall survival . In comparison with anastrozole, letrozole demonstrated a significantly higher ORR than anastrozole, although there were nodifferences in TTP and overall survival (Tab. 1) . In the first-line treatmentof postmenopausal women with hormone receptor-positive or -unknown locally advanced or metastatic viagra for sale without a prescription cancer, letrozole proved superior to tamoxifenwith regard to TTP, ORR, and clinical benefit rate, in the largest first-line trialconducted to date .