title: [Differential diagnosis of tailgut cyst in the case of a rectal carcinoma with presacral mass].
abstract: Cystic masses of various different origins and degrees of malignancy occur in the presacral space. Apart from benign, malignant and acute inflammatory masses, the benign lesions include a group of cystic structures to which the dysgenetic cysts belong. The tailgut cyst is a relatively rare type of gastrointestinal origin from this group. We present the case of a stenosing rectal carcinoma in which a presacral mass was additionally found, which did not get smaller compared to the rectal tumour during combined preoperative radiochemotherapy, with a lymphoma being suspected. After extirpation of the tumour, histopathological processing revealed a stenosing rectal carcinoma with an adjacent dysgenetic lesion--a tailgut cyst. Although dysgenetic lesions are rare as presacral masses, this must also be taken into account as a differential diagnosis in the various imaging procedures such as endosonography, CT and MRT when a rectal carcinoma is present.
authors: Abteilung für Bildgebende Diagnostik und Interventionelle Radiologie, Güstrower Krankenhaus, Akademisches Lehrkrankenhaus, Universität Rostock.
authors: Alexander
authors: A
authors: Färber
authors: Jens
authors: J
authors: Nickel
authors: Wolfgang
authors: W
authors: Brinckmann
authors: Rainer
authors: R
authors: Fietkau
authors: Ralf
authors: R
authors: Pommerencke
authors: Reimer
authors: R
authors: Andresen
mesh_terms: D000368:Aged; D003560:Cysts / Q000000981:diagnostic imaging / Q000473:pathology; D003937:Diagnosis, Differential; D006222:Hamartoma / Q000000981:diagnostic imaging* / Q000473:pathology*; D006801:Humans; D008297:Male; D011859:Radiography; D012002:Rectal Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D012445:Sacrococcygeal Region / Q000000981:diagnostic imaging* / Q000473:pathology*