fetus(Battle)periodIntraperitoneal cystic disease(National Institute of Public Health)What is it?

Sac-like lesions may be found in the abdomen during fetal development. A rough diagnosis can be made based on the size and characteristics of the lesion, but an accurate diagnosis may not be possible until after birth. Depending on the disease, a treatment plan may need to be drawn up by obstetrics, neonatology, and pediatric surgery before birth.

What diseases are there?

ovarian cyst

This condition occurs when fluid accumulates in the ovaries due to the influence of the mother's hormones, causing them to swell. In some cases, surgery may be required after birth.

Dilation of the bile ducts

This is a condition in which the bile duct expands into a pouch-like shape. This includes congenital biliary dilatation and some cases of biliary atresia. In the case of biliary atresia, surgery is required early after birth.

Intestinal duplication

This is a disease in which intestinal tissue is present in a pouch-like shape in a different location from the normal intestine. Surgery will be required at some point.

meconium peritonitis

This is a condition in which a hole develops in the intestine for some reason during fetal development, causing the contents of the intestine to accumulate in a bag-like shape inside the abdomen. Treatment, including surgery, is required early after birth.

Lymphangioma

This is a lymphatic malformation in which lymphatic vessels are enlarged like pouches within the abdominal cavity.

ureteral anomalies

There is a part of the ureter that has poor passage, and the upstream ureter expands like a pouch. Congenital hydronephrosis is a common condition. Treatment may be required after birth.

Anorectal and genitourinary malformations

Malformations of the anorectum and urinary system can cause the organs to expand like a pouch (e.g., persistent empty bladder syndrome). Treatment is required immediately after birth.

• Fetal intraperitoneal cystic disease (PDF download)