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  • Title: [Neoadjuvant chemotherapy (M-VAC) in invasive cancer of the bladder. Our experience].
    Author: González Enguita C, Caro Cebrián C, Roncalés Badal A, Gil Sanz MJ, Martínez Bengoechea J, Rioja Sanz LA.
    Journal: Arch Esp Urol; 1990; 43 Suppl 2():197-204. PubMed ID: 2096779.
    Abstract:
    Thirty-three patients with locally advanced T2-4NxM0 muscle infiltrating bladder carcinoma were treated with M-VAC (methotrexate, vinblastine, adriamycin and cisplatin) following TUR. Twenty-eight patients were evaluable since 4 had been receiving the foregoing treatment and 1 was being reevaluated after having undergone a partial cystectomy procedure prior to the chemotherapeutic regimen. Eighteen patients underwent radical cystectomy after neoadjuvant chemotherapy, 2 bladders could not be resected, 2 patients refused the procedure and the remaining 6 patients had a functioning bladder. Of the 28 patients, 46.42% (pCR) were pT0 (including the 6 patients with a functioning bladder, and 10.71% (pPR) were down-staged. This represents a pGR of 57.13%. Four of the 18 patients who underwent cystectomy had a higher pathologic stage evidenced by the surgical specimen than the initial finding at TUR indicating that 22.22% had been understaged. Noninvasive diagnostic methods (TUR, cytology, ultrasound, CT...) could not demonstrate the presence of tumor in those patients with preserved bladder. The cRC is similar (46.42%) and the cRP was 7.14%, giving a total cRG of 53.56%. With a mean follow-up of 13.63 months (range 5-36+), 54.54% are alive and disease-free, including the 6 patients with preserved bladder, and 21.21% are alive with locoregional recurrence or distant metastasis. Currently the mortality rate is 9.09%. The correlation of the data gleaned from the clinical response and that of the pathological condition, the possible understaging of the preserved bladders and the outcome in a series with a very short follow-up have as yet to be elucidated.
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