Tumours of retrorectal space: A rare entity scarcely known b
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Rectrorectal tumours are an extremely rare entity. According to Jao et al. these tumours account for 1 in 40,000 hospital admissions. Some authors have reported a rise of female gender cases (ratio 3:1) with a peak at middle age. In addition, malignant processes seem to be more frequent in women than in men. Moreover, malignancy is also associated to solid aspect and paediatric population. Most of the surgeons will face only one or two cases along with their career. As a result, misdiagnosis and delayed treatment are frequent. Therefore, a proper anatomical knowledge of retrorectal space is crucial to achieve a comprehensive understanding and an adequate treatment. The vast majority of these lesions are benign and congenital. However, there is a small percentage of malignant tumours that make surgery highly recommended when conditions of the patient are optimal. Furthermore, surgery provides not only treatment but also the definitive histopathological diagnosis. Two essential tools are magnetic resonance imagining (MRI) and rigid rectoscopy, both of them allow to plan an adequate surgical procedure. Surgical procedure depends on nature of lesion and location. Digital rectal examination and rigid rectoscopy will allow to locate the lesion and, subsequently, to perform a multidisciplinary approach. Lesions placed above S3 need an abdominal incision and those below S3 can be approached through via posterior...

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