Tailgut cyst, management of a rare perianal mass: a case report

Tailgut cysts are uncommon in the perianal area but should be included in the differential diagnosis of perianal masses and should not be confused with an abscess or a haemorrhoid. The nuclear magnetic resonance appears to be the most appropriate radiological examination for the assessment of these masses. Excision is performed systematically to confirm the diagnosis and exclude a malignant condition thanks to the anatomopathological examination.