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  • Title: Estimation of preoperative uterine weight in uterine myoma and uterine adenomyosis.
    Author: Shiota M, Kotani Y, Umemoto M, Tobiume T, Hoshiai H.
    Journal: Asian J Endosc Surg; 2012 Aug; 5(3):123-5. PubMed ID: 22776415.
    Abstract:
    INTRODUCTION: Uterine myoma and uterine adenomyosis frequently occur in sexually mature women. Total hysterectomy is the treatment of choice when the symptoms are severe. To select an operative procedure from abdominal, vaginal, and laparoscopic methods, precise estimation of the preoperative uterine weight is desired. In this study, we estimated the preoperative uterine weight with preoperative images in cases of uterine myoma and uterine adenomyosis. METHODS: We evaluated 403 patients with uterine myoma or uterine adenomyosis (uterus < 1000 g) between 1996 and 2010. All patients underwent a preoperative MRI and received a hysterectomy with the uterine weight recorded. Based on MR images, we measured (in centimeters) the maximum longitudinal diameter in the sagittal section (a), the maximum lateral diameter (b) and the maximum longitudinal diameter in the transverse section (c) of each uterus. A correlation coefficient was calculated between the weight of the removed uterus and the value of a × b × c for each individual uterus. Also, a regression analysis was performed between x (the value of a × b × c) and y (weight of the removed uterus). RESULTS: A strong correlation was shown between the weight of the removed uterus and the value of a × b × c (r = 0.81, P < 0.01). As a result of the regression analysis, the regression equation y = 0.35x + 107 (R(2) = 0.66, P < 0.01) was obtained. CONCLUSION: In this study, the estimated weight of the uterus was calculated by the formula y = 0.35x + 107 (x = a × b × c), and this could be the determining factor in choosing a surgical method for hysterectomy.
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