Introduction
Tailgut cysts (TGCs), a type of epidermoid cyst developing in the retro-rectal region, are rare conditions that are often asymptomatic and require further evaluation for malignant transformation if they become symptomatic or even incidentally discovered. Symptoms can range from asymptomatic to local effects on adjacent organs or infectious processes.
Tailgut cysts may have a malignant transformation and present with different pathologies that can show different behavior and outcome. Malignant transformations are often adenocarcinomas and neuroendocrine forms. Squamous Cell Carcinoma, like what we will report in our case, is very rare and has been reported in only four patients so far.