A Rare Case of Allantoic Cyst with Patent Urachus in Fetus with a Microdeletion in 1q21.1q21.2 Region

An allantoic cyst is a rare malformation with a frequency of 3 in 1,000,000 that may be seen antenatally by ultrasound assessment when the connection between the cloaca (future bladder) and the allantois fails to regress. A patent urachus that presents as a cyst (allantoic) is usually considered not to be associated with chromosomal abnormalities, but if it is not repaired after birth this leads to complications such as urinary tract infections and stone formation. We present a case of a fetus diagnosed with allantoic cyst at the first trimester ultrasound assessment at 12 weeks gestation. The follow up scans showed a decrease in size of the allantoic cyst with no other obvious major defects and, when invasive testing (amniocentesis with microarray analysis) was performed, a rare microdeletion, 1q21.1q21.2 was identified (1.82 Mb deletion).

Chronic umbilical abscess secondary to a patent urachus in a 30 years male: a case report

Urachus is epithelialized, fibromuscular remnant part connecting urinary bladder with umbilicus. Urachal anomalies present and progress differently in paediatric and adult population. They remain largely asymptomatic until infected. Clinical presentation may vary from simple discharge from umbilicus to intrabdominal abscess and peritonitis. We present a case of urachal sinus presenting as recurrent umbilical abscess. 30 years male presented with complaints of umbilical mass with pus discharge. He was evaluated clinically and radiologically. Ultrasound revealed a localized collection near umbilicus whereas CT scan revealed connection of that collection to a fibrous strand like structure approximately 10 cm extending from umbilicus to urinary bladder. An open exploration was done under regional anaesthesia and 20 ml of abscess drained with excision of tract by ligating near the bladder end. Local debridement was done near the umbilical area. Wound closed in layers. Post-op period was uneventful without any recurrence. urachal anamolies need a high index of suspicion in adults to intervene early and get better outcomes with less morbidity.