Foetal abdominal cystic lesions generally have their origin in the genitourinary system, such as hydronephrosis, renal dysplasia, ovarian cyst, and urachal cyst
. Additionally, atresia or duplication of gastrointestinal system may be the cause of abdominal cysts.
Urachal remnants may persist in approximately 32% of adults, (1) and clinically they can present as patent urachus (most common), umbilical-urachal sinus, vesicourachal diverticulum, and urachal cyst
(second most common) depending on which portion of the urachus persists.
The urachal cyst
is the most common type of adult urachal abnormality .
Tumors or conditions rated as intermediate include inflammatory myofibroblastic tumors (IMT) [297-300], a solitary fibrous tumor (SFT) , desmoid fibromatoses [302, 303], a hemangiopericytoma , and a Castleman's disease , while benign tumors and conditions include dermoid cysts [301, 306], teratomas [307, 308], leiomyomas [309, 310], (fibrous) hamartomas [311, 312], a hemangioma , a fibroadenoma , malakoplakia , abscesses [316-318], a xanthogranulomatous urachitis , a urachal tuberculosis , actinomycosis [321-323], an endometriosis , a perforated colonic diverticulitis , and even a fishbone within an urachal cyst
The most likely possible differential diagnoses were: urachal cyst
, degenerated pedunculated subserous fibroid, peritoneal inclusion cyst, and ovarian dermoid cyst.
Features consistent with urachal cyst
with a subcutaneous component (Fig.
The differential diagnosis to be considered on imaging appearance include bladder diverticulum, urachal cyst
, Mullerian duct cyst, or a Seminal vesicle cyst.
Incomplete closure of this embryological communication may result in a urachal fistula, urachal sinus, urachal cyst
or urachal diverticulum (Fig.
Histopathology confirmed the diagnosis of urachal cyst
The closest differential diagnosis on antenatal ultrasound of meconium pseudocyst are cystic lesions of ovary, urachal cyst
, mesenteric, omental, and retroperitoneal cysts.
INTRODUCTION: An infected urachal cyst
is one of a spectrum of presentations of urachal pathology, all of which are rare in adulthood.
The differential diagnosis of an adrenal pseudocyst essentially includes all the upper abdominal space-occupying lesions, such as splenic, hepatic, and renal cysts, as well as mesenteric or retroperitoneal cysts, urachal cysts
, and solid adrenal tumours [9, 12, 13, 16].