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Tailgut cysts: report of two cases

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International Journal of Colorectal Disease Aims and scope Submit manuscript

Abstract

Aim

An illustration of the diagnosis and management of tailgut cysts.

Materials and methods

Two cases of tailgut cyst and a review of the literature.

Results

A female patient presented with acute urinary retention with a retrorectal mass felt during rectal examination and confirmed on ultrasound and magnetic resonance imaging underwent surgical resection and histology confirmed a chronically inflamed mucoid fluid-filled cyst partly lined by non-keratinised squamous epithelium. A male patient with ureteric obstruction and a prerectal cyst found on ultrasound scan underwent computed tomography with biopsies, but without reaching a conclusive diagnosis. Surgical resection was carried out and histology showed a chronically inflamed mucoid fluid-filled cyst partly lined with columnar epithelium.

Discussion

Tailgut cysts are a rare developmental abnormality arising from remnants of the embryological postanal gut. Usually presenting incidentally or with pressure symptoms in middle-aged females, tailgut cysts are often initially mistaken for other clinical entities. Magnetic resonance imaging helps to differentiate tailgut cysts from other retrorectal lesions and developmental cysts. Histologically, the cyst wall demonstrates a wide variety of epithelial types and has a malignant potential. Malignancy is difficult to rule out with imaging or biopsy.

Conclusions

Magnetic resonance imaging is the favoured imaging modality and surgical resection is recommended to relieve pressure symptoms, provide a definitive diagnosis and rule out malignancy.

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Authors and Affiliations

  1. St Thomas’ Hospital, Westminster Bridge Road, London, SE1 7EH, UK

    Eleanor Au, Oliver Anderson, Barry Morgan, Lida Alarcon & Mark L. George

  2. 30 Elmhurst Drive, South Woodford, London, E18 1BT, UK

    Oliver Anderson

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  1. Eleanor Au
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  2. Oliver Anderson
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Correspondence to Oliver Anderson.

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Au, E., Anderson, O., Morgan, B. et al. Tailgut cysts: report of two cases. Int J Colorectal Dis 24, 345–350 (2009). https://doi.org/10.1007/s00384-008-0598-6

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