Tailgut duplication cyst

Case contributed by Dr Mostafa Mahmoud El Feky

Presentation

MRI was done for assessment of left ovarian cysts.

Patient Data

Age: 40
Gender: Female
MRI

MRI pelvis

A bilocular cyst is noted in the pre-sacral retro-rectal concavity, separable from both ovaries. It measures 10 x 9 x 8.5 cm in its maximal AP, side to side and cephalocaudal dimensions respectively. It shows homogeneous fluid signal with no solid components and internal septation.

The cyst exerts mass effect upon adjacent pelvic structures. It compresses and displaces the rectum to the right side, the uterus, vagina and the urinary bladder anteriorly and superiorly.

Multilocular left ovarian cyst is noted, measuring 6.5 cm, with no suspicious features (functional cyst).

Case Discussion

The diagnosis of tailgut duplication cyst was based on the classic features of fluid filled cyst found in the retrorectal/ presacral space with internal septation which are characteristic. It can be asymptomatic or present with perirectal symptoms.

Differential diagnosis includes epidermoid cyst, dermoid cyst, rectal duplication cyst, anal gland cyst, cystic lymphangioma and anterior meningocele. Distinction of tailgut cyst and other presacral cysts is important because of the malignant potential of tailgut cyst
 

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Case information

rID: 53313
Case created: 11th May 2017
Last edited: 8th Jun 2017
Inclusion in quiz mode: Included

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