title: Tailgut cyst in an infant with imperforate anus: a case report.
abstract: BACKGROUND
  Tailgut cyst (TGC) is a rare congenital lesion that originates from remnants of the embryonic post-anal gut. It presents as a multilocular presacral mass mainly in young women. Microscopically, the cyst lining is composed of different types of epithelium such as stratified squamous, transitional, or glandular.
  
  
  METHODS
  We present a term female newborn referred to our hospital for evaluation and management of imperforate anus. During dissection of the presacral space to release the rectum, a multicystic mass adherent to the distal part of rectum was detected and completely excised. Histopathology confirmed the TGC diagnosis.
  
  
  CONCLUSIONS
  TGC is a very rare lesion, but it should be considered in differential diagnosis of any presacral mass, even in infancy. Complete excision is the preferred treatment and can be done more easily neonatally or in infancy.
authors.affiliation: Department of Pediatric Surgery, Aria Hospital, Islamic Azad University, Mashhad Branch, Iran.
authors.forename: S Mohammad-Ali
authors.initials: SM
authors.lastname: Raisolsadat
authors.affiliation: Department of Pathology, Dr. Sheikh Children's Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.
authors.forename: Nona
authors.initials: N
authors.lastname: Zabolinejad
authors.affiliation: Department of Pediatrics, 22 Bahman Hospital, Islamic Azad University, Mashhad Branch, Iran.
authors.forename: Fariba
authors.initials: F
authors.lastname: Tabrizian-Namini
authors.affiliation: Department of Pediatric Surgery, Aria Hospital, Islamic Azad University, Mashhad Branch, Iran.
authors.forename: Parisa
authors.initials: P
authors.lastname: Faraji
keywords: Neonate; Retrorectal hamartoma; Tailgut cyst