Hosting 718 files, 2916 images, and 4 contributors.

 
Random Case

Pulmonary Artery Aneurysm
Joseph Junewick, MD FACR
over 7 years ago
Enter A Workflow
Standard2   Academic2

Please choose a workflow. A standard workflow allows you to browse the repository with full case detail; the academic workflow allows you to browse the repository with limited case detail revealed. Double click on the images to launch image viewer.

ARSt Case Repository

Tailgut Cyst

Case Detail

Anatomy: Gastrointestinal
Junewick
Joseph Junewick, MD FACR
Diagnostic Category: Developmental or Congenital
Created: over 4 years ago
Updated: over 4 years ago
Tags: PEDS
Modality/Study Types: MR
Activities:
Adobe32 PDF Imagej32 ImageJA

History

9 month old female with sacral dimple.


Case Images


Diagnosis

Tailgut Cyst (uncomfirmed)

Findings

MR – Sagittal and axial T2 images from spine examination show a multilocular presacral cystic mass displacing the rectum and uterus anteriorly and to the right.

Discussion

The most caudal portion of the hindgut invaginates into the primitive tail and regresses by the eighth week of embryonic development – persistence may give rise to a tailgut cyst. Tailgut cyst may be found at any age and in both genders but is most commonly detected in middle-aged females being evaluated for abdominal pain or constipation. Tailgut cysts are susceptible to hemorrhage and infection but rarely, malignant transformation. Tailgut lesions may be unilocular or multilocular, lined with multiple, varying types of epithelium. Sonography shows a multilocular cystic mass. CT shows a well-marginated, presacral mass of fluid density, often displacing the rectum. On MRI, tailgut cyst usually displays low signal intensity on T1-weighted images and high signal intensity on T2-weighted images. Variations in mucin content and secondary hemorrhage or infection may alter its appearance. Differential diagnoses should include epidermoid cyst, dermoid cyst, rectal duplication cyst, anal gland cyst, cystic lymphangioma, and anterior meningocele. Histologic analysis is essential to establish a definitive diagnosis of tailgut cyst.

Reference

Yang DM, Park CH, Jin W et al. Tailgut Cyst: MRI Evaluation. ARJ (2005); 184:1519-1523.



Corporate Office: 616.363.7272, 3264 North Evergreen Drive, Grand Rapids, MI 49525

Spectrum Health Helen Devos Childrens Hospital GE HealthCare