Merchea, A Lesions Originating within the Retrorectal Space. [electronic resource] - Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract Dec 2014 - 2232-3 p. digital Publication Type: Letter; Comment ISSN: 1873-4626 Standard No.: 10.1007/s11605-014-2536-y doi Subjects--Topical Terms: FemaleHumansMaleRectal Neoplasms--diagnosis