title: A rare case of carcinoid tumor in a tailgut cyst.
abstract: Tailgut cysts are rare congenital lesions that arise from the failure of regression of the embryological tailgut. We report a case of neoplastic transformation of tailgut cyst to carcinoid tumor which is exceedingly uncommon.
authors.affiliation: Department of Internal Medicine, Reading Health System, West Reading, PA, USA; asadjehangir@gmail.com.
authors.forename: Asad
authors.initials: A
authors.lastname: Jehangir
authors.affiliation: Department of Pathology, Reading Health System, West Reading, PA, USA.
authors.forename: Brian H
authors.initials: BH
authors.lastname: Le
authors.affiliation: Berks Colorectal Surgical Associates, Reading, PA, USA.
authors.forename: Frank M
authors.initials: FM
authors.lastname: Carter
keywords: carcinoid tumor; chromogranin A; neuron-specific enolase; synaptophysin; tailgut cyst