Urachal remnants

Introduction The urachal catheter is a tubular thin band that is formed by the umbilicus and the bladder formed in the early stage of the embryo. It gradually closes into a fibrous cord in the subsequent embryonic stage and in the infancy, and loses its role as a drainage duct and gradually disappears. However, in about 20% to 30% of adults, a detailed physical examination reveals a cord-like or tubular (referred to as the umbilical ligament) that is subcutaneously attached to the bladder. Umbilical urinary catheter is an extraperitoneal structure. Usually, the adult umbilical cord is 3 to 10 cm long, 8 to 10 mm in diameter, and the top diameter is about 2 mm. Umbilical cord residuals usually have no obvious signs and symptoms, but there are still 2/300,000 morbidity in infants.

Cause

1 umbilical catheter is not closed.

2 urachal cysts.

3 urachal fistula.

4 bladder umbilical diverticulum.

5 traffic (umbilical urinary tract open).

an examination

Related inspection

Urine routine laparoscopic umbilical examination

Umbilical malformations in the absence of other complications may have no clear clinical manifestations, but some may cause localized pain or frequent urination due to luminal or cystic enlargement of the surrounding tissue. Common urachal diseases include infections, stones, and tumors.

Differential diagnosis

B-ultrasound and CT are relatively easy to find urinary tract abnormalities, and can clearly show the type of urachal residual. However, B-ultrasound and CT findings are more difficult to identify infected urinary tract and urachal tumors. Infected urachal and urachal tumors showed strong echogenicity under B-ultrasound; thick-walled cysts and diffuse attenuation at CT, which made it difficult to separate the two. Fine needle aspiration and cyst drainage have certain significance for the diagnosis and treatment of diseases. Since any part of the residual urinary tract can be cancerous, all kinds of congenital urinary tract abnormal diseases should be removed as soon as possible after infection control. Patients with phimosis, urethral stricture and urethral valve disease should be treated in advance.

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