Coccygeal polypoid eccrine nevi can also be distinguished from other sacrococcygeal lesions in the pediatric age group, such as teratoma, sacrococcygeal eversion, and tailgut cysts.
Finally, tailgut cysts are congenital malformations in the presacral space and are a malformed remnant of the hindgut.
Among them, there are the mucus-secreting cysts, also called tailgut
cysts or cystic hamartomas, that are often lined by transitional, columnar mucinous epithelium and characterized by a multicystic aspect and high frequency in middle-aged women.
(1) These include tailgut
cysts, which are well-defined masses, typically multicystic and nonencapsulated, and may be unilocular.
We present the multimodality imaging findings of a retrorectal/presacral tailgut
cyst with concomitant hydatid disease of the perineum.
Laparotomy, done with the above possibilities and a tailgut
cyst or rectal duplication cyst in mind, revealed an immobile retroperitoneal, tense, cystic swelling occupying the entire pelvic cavity.
cysts can be diagnosed at all ages but are seen more commonly in middle-age females.
There are two types of enteric cysts, tailgut
cysts (so-called retro rectal cyst-hamartomas or mucin-secreting cysts) and cystic rectal duplication.
The retrorectal cystic hamartoma, also referred to as a tailgut
cyst, is believed to originate from the vestigial elements of the embryonic hindgut.
Hemorrhoids, perianal abscess, tailgut
cysts, anal canal cysts, retrorectal/presacral cysts, teratomas and dermoid cysts, anal skin cancer should be considered in the differential diagnosis of p erianal cysts.
Differential diagnoses are numerous, including cystic lymphangioma, mucinous cystadenoma, cystic teratoma, cystic mesothelioma, mullerian cyst, epidermoid cyst, tailgut
cyst, bronchogenic cyst, cystic changes in a solid neoplasm, pseudomyxoma retroperitoneal, perianal mucinous carcinoma, pancreatic pseudocyst, lymphocele, urinoma, hematoma, cystadenoma of mesonephric origin, and cavernous hemangioma Dinesh .
Retrorectal cyst hamartoma (RCH), also commonly known as tailgut
cyst, is a rare benign cystic lesion located in the retrorectal space and is believed to derive from persistence of embryologic remnants of the post anal gut (tailgut
), which appears at the 3.5-mm stage of the human embryo.