Retrorectal cyst-hamartoma, an uncommon lesion, arises from hindgut embryonic remnants and may be associated with sacral anomalies. Such a lesion is presacral, multicystic, and lined with glandular or transitional epithelium. Malignant transformation of these lesions has been reported. We describe the clinical, pathologic, and imaging findings in an infant.

Tailgut cysts are benign retrorectal embryological remnants, often found incidentally or when evaluating a patient for pelvic symptoms. Transanal minimally invasive surgery (TAMIS) offers patients a low morbidity surgical approach for resection of a variety of low rectal lesions. This is a case report of resection of a tailgut cyst using TAMIS, including images and description of the steps of t...

In the articles “The malignant transformation of retrorectal cystic hamartomas with blood irregular antibodies positive: A case report” and “Urachal adenocarcinoma that metastasized to breast was misinterpreted as primary breast mucinous carcinoma: A rare case report and literature review”, which appeared in Volume 94, Issue 49 and Volume 95, Issue 35, respectively, of Medicine, a university af...

Tailgut cysts and rectal gastrointestinal stromal tumors (GIST) are rare found in the retrorectal space. congenital malformations resulting from incomplete regression of hindgut during embryogenesis they mostly affect women third to sixth decade life; GIST account for 5% all GIST. Both conditions may present with nonspecific symptoms such as pelvic or anal pain, bleeding weight loss. usually be...