EURORAD ESR

Case 10185

Tailgut Cyst: a rare retrorectal tumor

Author(s)
Joana Maciel1, Cristina Maciel2, Frias-Coutinho1, Nuno Neves1

1- Hospital Infante D Pedro Aveiro, Radiologia; Aveiro, Portugal
2 -Hospital de São João, Radiologia; Porto
Email:joanasofiamaciel@gmail.com
 
Patient
female, 40 year(s)
 
 
  • Figure 1
    Unenhanced sagital and axial CT

    Well-defined lobulated complex voluminous mass, with solid and cystic areas and some intracystic septations with thin calcifications, located posterior to the rectum.

     
    Area of Interest: Pelvis; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Congenital; Cysts;
     
     
  • Figure 2
    Sagittal T1-weighted MR images

    Multiloculated mass in the ischiorectal fossa, which displaces the rectum and the levator ani muscle anteriorly and superiorly, with low and intermediate signal on T1WI.

     
    Area of Interest: Pelvis; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Congenital; Cysts;
     
     
  • Figure 3
    Axial T2-weighted MR

    T2WI image shows areas of high signal due to liquid component.

     
    Area of Interest: Pelvis; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Congenital; Cysts;
     
     
  • Figure 4
    Sagittal STIR images

    STIR images show areas of high signal due to liquid component and no evidence of fat.

     
    Area of Interest: Pelvis; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Congenital; Cysts;
     
     
  • Figure 5
    Axial T1-weighted MR images before and after gadolinium administration

    On contrast-enhanced image there is septa enhacement

     
    Area of Interest: Pelvis; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Congenital; Cysts;
     
     
Well-defined lobulated complex voluminous mass, with solid and cystic areas and some intracystic septations with thin calcifications, located posterior to the rectum.
 
Multiloculated mass in the ischiorectal fossa, which displaces the rectum and the levator ani muscle anteriorly and superiorly, with low and intermediate signal on T1WI.
 
T2WI image shows areas of high signal due to liquid component.
 
STIR images show areas of high signal due to liquid component and no evidence of fat.
 
On contrast-enhanced image there is septa enhacement
 
 
 
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